CN110088403A - High-pressure injection spray nozzle device and the ground improvement device for being equipped with the device - Google Patents

Abstract

In previous ground improvement device, since the axial curing materials liquid supply pipe from injection bar sends out curing materials liquid to the curing materials liquid injection nozzle substantially orthogonal with the axis of injection bar, therefore the problem of there are a part of the flowing of curing materials liquid to become turbulent condition, and the spray distance of the curing materials liquid sprayed from curing materials liquid injection nozzle shortens.The present invention by by cement slurry by flow path cutting part (31x) the fine Ground Split in the back end inside diameter portion (28x) of nozzle body portion (24x), the turbulent condition of cement slurry is destroyed, and cement slurry is in divided each space by more imperceptibly laminarization while velocity flow profile homogenization.As a result, further increase the cutting power of the cement slurry sprayed from the nozzle body portion front end (24x), so as to which cement slurry is ejected into farther distance.

Description

High-pressure injection spray nozzle device and the ground improvement device for being equipped with the device

Technical field

The present invention relates to be connected in the curing materials liquid supply pipe in injection bar and the front end with the injection bar be set It causes the high-pressure injection spray nozzle device of the side of device and the ground of the high-pressure injection spray nozzle device is installed in the front end of connection Improved device.

Background technique

Conventionally, there is known insertion injection bar in the excavated hole of the drilling in ground, from the front end for being installed on the injection bar The nozzle of side sprays the ground improvement device of curing materials liquid to the axial direction direction at right angle with injection bar.

As shown in figure 32, which is constituted by curing materials supply pipe 108 and compressed air supply pipe 109 The lower end side wall 101a of injection bar 101 of two-layer pipe be provided with jet port 107.The jet port 107 by with injection bar The outlet for the curing materials liquid injection nozzle 110 that 101 curing materials liquid supply pipe 108 is connected to and surround the curing materials Liquid injection nozzle 110 and the blast injection nozzle 111 being connected to compressed air force pipe 109 composition.Also, from injection The top of bar 101 supplies curing materials liquid via curing materials liquid supply pipe 108, sprays from curing materials liquid injection nozzle 110 The curing materials liquid (for example, patent document 1).Here, Figure 32 is the front sectional view of previous injection bar.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 10-331151 bulletin

Summary of the invention

Technical problems to be solved by the inivention

However, previous ground improvement device, due to the curing materials liquid supply pipe 108 of the axis direction from injection bar 101 Curing materials liquid is sent out to the substantially orthogonal curing materials liquid injection nozzle 110 of axis with injection bar 101, therefore from solidification material Feed liquid supply pipe 108 sends out the part of curing materials liquid, the i.e. bending part of pipeline to curing materials liquid injection nozzle 110, Gu The a part for changing the flowing of material liquid becomes swirling flow, also, a part of the flowing of curing materials liquid is sprayed in curing materials liquid Penetrating becomes turbulent condition in front of nozzle 110, further, since in the curing materials of 110 internal flow of curing materials liquid injection nozzle The current difference of the disorder of the flowing of liquid and the inner peripheral portion of curing materials liquid injection nozzle 110 and central part is generated from curing materials The power loss for the curing materials liquid that liquid injection nozzle 110 sprays.Like this, if generating from curing materials liquid injection nozzle 110 Then there is cutting for the curing materials liquid sprayed from curing materials liquid injection nozzle 110 in the power loss of the curing materials liquid of injection Cut decline, the problem of spray distance shortens.

As mentioned above, it is necessary, generating the solidification material sprayed from curing materials liquid injection nozzle in previous ground improvement device The power loss of feed liquid, thus spray distance shortens, therefore in order to eliminate the situation, extends and spray from curing materials liquid injection nozzle The injecting time for the curing materials liquid penetrated, or shorten the interval for lifting injection bar upwards, it is thus large-scale to improve Ground.However, if using the large-scale ground of such method improvement, the construction period long life of foundation improvement engineering, And construction efficiency also declines, as a result, there are problems that the operating expenses of foundation improvement engineering also increases.In addition, conduct Curing materials liquid is set to be ejected into remote method from curing materials liquid injection nozzle, although also having makes to spray to curing materials liquid The method that the supply pressure of the curing materials liquid of nozzle supply increases, but in the method, due to injection bar or curing materials Liquid injection nozzle is with high voltage supply curing materials liquid, so the consumption of its peripheral equipment becomes acutely, and these consumption also have There may be the unfavorable conditions of foundation improvement.

In addition, shown in Fig. 7 as be described hereinafter, it is known that the outlet diameter d of injection nozzle, the front end same-diameter portion of injection nozzle are divided Length L, injection nozzle full length LL, the front end same-diameter portion from the rear end of injection nozzle to injection nozzle are divided into section only Flowing angle B can be such that curing materials liquid is ejected at a distance from injection nozzle if meeting relational expression below.Here, Fig. 7 is The attached drawing of 1st embodiment of the present application is illustrated here, being only conceived to injection nozzle.

[number 1]

L=3d~4d (equation 1)

[number 2]

LL=15d~20d (equation 2)

[number 3]

Degree~13 degree B=12 (equation 3)

In recent years, more wish to form bigbore in-situ consolidation body, it is solid in order to form such bigbore underground Knot body needs to increase the outlet diameter d of injection nozzle.However, if the outlet diameter d of injection nozzle increases, on meeting The relational expression for the 1~equation of equation 3 stated necessarily may require that length L or the injection of the front end same-diameter portion point for lengthening injection nozzle The length of nozzle full length LL, thus can lead to the problem of front end cause device shape enlargement.In turn, if front end is made At the shape enlargement of device, then injecting bar also can be enlarged, also, injects bar overall weight and increase, and support to it Drilling machine etc. also can enlargement, therefore the construction cost for generating foundation improvement also increases such problems.

The present invention proposes in view of the above problems, therefore can be by curing materials liquid from high pressure the purpose is to provide one kind Injection nozzle is ejected into remote high-pressure injection spray nozzle device and is equipped with the foundation improvement of the high-pressure injection spray nozzle device Device.

For solving the scheme of above-mentioned technical problem

In order to solve the above problems and realize above-mentioned purpose, the high-pressure injection spray nozzle device of the 1st scheme in the present invention is Before the front end for being connected to in the axial curing materials liquid supply pipe being formed in injection bar, and being set to and inject bar links Cause the high-pressure injection spray nozzle device of the side of device in end, which is characterized in that there is the nozzle body portion for being formed as hollow shape, The nozzle body portion includes: the intermediate inside diameter of conical surface shape, inner peripheral surface forward extreme direction undergauge and formed；Front inner diameter portion, with The front end of intermediate inside diameter is connected to, and diameter is roughly the same with the intermediate diameter of front end of inside diameter；Back end inside diameter portion, in centre The rear end in diameter portion is connected to, and the rear end diameter for being formed as diameter and the intermediate inside diameter is roughly the same or from the roughly the same diameter And extreme direction is expanding backward, is formed in the back end inside diameter portion of nozzle body portion hollow shape section being divided into multiple spaces Flow path cutting part, flow path cutting part have following part: the back end inside diameter portion of the hollow shape near flow path cutting part it is big Cause central part, have the hollow shape sectional area in the back end inside diameter portion near the flow path cutting part of being equivalent to 2%~ The part of 20% area, nozzle body portion back end inside diameter portion flow curing materials liquid divided by flow path cutting part it is each By after more imperceptibly laminarization in a space, intermediate inside diameter there is no the spaces of the hollow shape of corporeal thing by undergauge And extreme direction conveys forward, therefore the cutting power of the curing materials liquid sprayed from the front inner diameter portion of nozzle body portion increases, So as to which curing materials liquid is ejected into farther distance.

Device (monitor) is caused towards front end from the curing materials liquid supply pipe direction in injection bar in curing materials liquid When the hollow shape direction of interior nozzle body portion carries out direction conversion, a part of the flowing of curing materials liquid is in the curved of pipeline Bent portions become swirling flow, also, a part of the flowing of curing materials liquid becomes turbulent condition in the front of nozzle body portion, But according to the present invention, curing materials liquid and flow path cutting part that the substantially central portion in the back end inside diameter portion of nozzle body portion flows Approximate centre part collision, since the curing materials liquid stream of the approximate centre part in the back end inside diameter portion after the collision enters by flowing Each flow path of road cutting part segmentation, speed increase and towards undergauge and the inner peripheral surface of intermediate inside diameter that is formed conveys, because The thickness in the boundary layer for the turbulent flow that this inner peripheral surface that can reduce inside diameter among this generates, can more imperceptibly carry out laminar flow Change.As a result, by increasing the cutting power of the curing materials liquid sprayed from the material liquid injection nozzle of nozzle body portion front end, energy The institutional framework for enough destroying ground, is ejected into farther distance for curing materials liquid.That is, the inner circumferential in intermediate inside diameter can be reduced The thickness in the boundary layer for the turbulent flow that face generates, therefore sprayed from the jet port of the material liquid injection nozzle of nozzle body portion front end Curing materials liquid is sprayed in the substantially entire surface of jet port with same speed.Thereby, it is possible to extend from nozzle body The unattenuated region (constant speed core region) of the speed of the curing materials liquid of the jet port injection of the material liquid injection nozzle of portion front end, Curing materials liquid can be made to be ejected into farther distance.

2nd scheme of the invention is the high-pressure injection spray nozzle device of the 1st scheme, which is characterized in that by flow path partitioning portion The section of the flow path cut add up to that area is the hollow shape sectional area in the back end inside diameter portion near flow path cutting part 40%~ 60%.

According to the present invention, since the section for the flow path divided by flow path cutting part adds up to area to be near flow path cutting part The 40%~60% of the hollow shape sectional area in back end inside diameter portion, therefore in the solidification of the back end inside diameter portion of nozzle body portion flowing Material liquid is diverted to each space divided by flow path cutting part, with the compressing force of appropriateness is compressed while extreme direction forward Conveying.Thereby, it is possible to make curing materials liquid further speedup and micro- in each space after being divided by flow path cutting part 31 Thin ground laminarization, by the cutting for increasing the curing materials liquid sprayed from the material liquid injection nozzle 21 of 24 front end of nozzle body portion Ability can destroy the institutional framework of ground, and curing materials liquid is ejected into farther distance.

3rd scheme of the invention is the high-pressure injection spray nozzle device of the 1st scheme or the 2nd scheme, which is characterized in that flow path Hollow shape sectional area near cutting part is the hollow shape sectional area next to flow path cutting part upstream.

4th scheme of the invention is the high-pressure injection spray nozzle device of the 1st scheme or the 2nd scheme, which is characterized in that flow path Hollow shape sectional area near cutting part is the hollow shape sectional area next to flow path cutting part downstream.

5th scheme of the invention, is the high-pressure injection spray nozzle device of either the 1st~the 4th scheme case, and feature exists In flow path cutting part is formed as cross shape.

According to the present invention, since flow path cutting part is formed as cross shape, in the back end inside diameter portion of nozzle body portion Substantially central portion flowing curing materials liquid and flow path cutting part cross shape approximate centre part collide, after the collision Back end inside diameter portion approximate centre part curing materials liquid equably flow by cross shape flow path cutting part segmentation Each flow path, speedup and towards the inner peripheral surface conveying of undergauge and the intermediate inside diameter that is formed.Thereby, it is possible to reduce in centre The thickness in the boundary layer for the turbulent flow that the inner peripheral surface in diameter portion generates, can more imperceptibly carry out laminarization.As a result, by increasing from spray The cutting power of the curing materials liquid of the material liquid injection nozzle injection of mouth main part front end, can destroy the knot of tissue of ground Curing materials liquid is ejected into farther distance by structure.

6th scheme of the invention, is the high-pressure injection spray nozzle device of either the 1st~the 5th scheme case, and feature exists In the back end inside diameter portion of, nozzle body portion to be formed in front end cause it is prominent inside axial curing materials liquid stream road in device Ground setting.

According to the present invention, since the back end inside diameter portion of nozzle body portion is protrusively provided the solidification caused in device in front end Inside material liquid stream road, therefore the linear distance that the curing materials liquid stream inside nozzle body portion can be made dynamic is elongated, turbulent Become few, the cutting power of the curing materials liquid sprayed from nozzle body portion front end can be made to increase, make curing materials Liquid is ejected at a distance.

7th scheme of the invention is a kind of ground improvement device, has the high pressure for being equipped with either a program in the 1st~the 5th Cause device in the front end of injection nozzle apparatus.

Invention effect

High-pressure injection spray nozzle device according to the present invention, the substantially central portion in the back end inside diameter portion of nozzle body portion flow Curing materials liquid and flow path cutting part approximate centre part collide, the approximate centre part in the back end inside diameter portion after the collision Curing materials liquid towards being flowed into each flow path divided by flow path cutting part, towards undergauge while speedup and formed Intermediate inside diameter inner peripheral surface conveying, therefore can reduce inside diameter among this inner peripheral surface generate turbulent flow boundary layer Thickness, can more imperceptibly carry out laminarization.It is sprayed as a result, by increasing from the material liquid injection nozzle of nozzle body portion front end The cutting power for the curing materials liquid penetrated can destroy the institutional framework of ground, and curing materials liquid is ejected into farther distance.

Detailed description of the invention

Fig. 1 is to show the ground improvement device of the high-pressure injection nozzle that is equipped with the 1st embodiment of the invention to apply The figure of work situation.

Fig. 2 (a) is to show the stereoscopic figure for being mounted with that device is caused in the front end of the high-pressure injection spray nozzle device.Fig. 2 (b) It is to indicate that will inject bar and front end causes the figure of the combination pin in conjunction with device.

Fig. 3 is the A-A cross-sectional view of Fig. 2.

Fig. 4 (a) is the enlarged drawing of the part P-P of Fig. 3.Fig. 4 (b) is to show front end the nozzle body portion of device is caused to pacify Fill the figure in hole.

Fig. 5 is the figure for showing the constituent part of high-pressure injection spray nozzle device of the 1st embodiment of the invention.

Fig. 6 is the cross-sectional view of this composition part.

Fig. 7 is the figure for showing the size of high-pressure injection spray nozzle device of the 1st embodiment of the invention.

Fig. 8 is the B-B cross-sectional view of Fig. 3.

Fig. 9 is the C-C cross-sectional view of Fig. 3.

Figure 10 is the assembling side for showing high-pressure injection spray nozzle device and its peripheral equipment in the 1st embodiment of the invention The figure of method.

Figure 11 is the figure for showing the installation method of the high-pressure injection spray nozzle device.

Figure 12 (a) is the enlarged drawing of the part P-P of Fig. 3 of the high-pressure injection spray nozzle device of the 2nd embodiment of the invention. Figure 12 (b) is to indicate that the figure of the nozzle body portion mounting hole of device is caused in front end.

Figure 13 is the figure for showing the constituent part of high-pressure injection spray nozzle device of the 2nd embodiment of the invention.

Figure 14 is the cross-sectional view of this composition part.

Figure 15 is mounted in the cross-sectional view for the high-pressure injection spray nozzle device that front end is caused on device.

Figure 16 be (a) be the 3rd embodiment of the invention high-pressure injection spray nozzle device Fig. 3 the part P-P amplification Figure.Figure 16 (b) is the figure for showing the nozzle body portion mounting hole that device is caused in front end.

Figure 17 is the figure of the constituent part of the high-pressure injection spray nozzle device of the 3rd embodiment of the invention.

Figure 18 is the cross-sectional view of this composition part.

Figure 19 is mounted to the cross-sectional view that the high-pressure injection spray nozzle device of device is caused in front end.

Figure 20 is the nozzle body portion for being shown mounted to the downward nozzle body portion mounting hole of variation 1 of the invention Figure.

Figure 21 is the nozzle body portion for being shown mounted to the upward nozzle body portion mounting hole of variation 2 of the invention Figure.

Figure 22 is the flow path for showing the back end inside diameter portion inside the nozzle body extension of variation 3 of the invention and being formed The figure of cutting part.

Figure 23 (a) is the figure for showing the installation site of high-pressure injection spray nozzle device of variation 4 of the invention.Figure 23 (b) It is that the front end of the high-pressure injection spray nozzle device of variation 4 of the invention is shown to cause the cross-sectional view of device installation site.

Figure 24 is the figure for being shown mounted to the flow path closure member of nozzle body portion mounting hole 23 of variation 5 of the invention.

Figure 25 (a) is the enlarged drawing of the part P-P of Fig. 3 of variation 6 of the invention.Figure 25 (b) is to indicate that front end is caused The figure of the nozzle body portion mounting hole of device.

Figure 26 is the figure for showing the constituent part of high-pressure injection spray nozzle device of variation 6 of the invention.

Figure 27 is the cross-sectional view of this composition part.

Figure 28 (a) is the enlarged drawing of the part P-P of Fig. 3 of the high-pressure injection spray nozzle device of variation 8 of the invention.Figure 28 It (b) is the figure for showing the nozzle body portion mounting hole that device is caused in front end.

Figure 29 is the figure for showing the constituent part of the high-pressure injection spray nozzle device.

Figure 30 is the cross-sectional view of this composition part.

Figure 31 is the figure for showing the installation method of the high-pressure injection spray nozzle device.

Figure 32 is the front sectional view of previous injection bar.

Specific embodiment

(the 1st embodiment) below, the 1st that high-pressure injection spray nozzle device 1 of the invention is directed at while referring to attached drawing is real The mode of applying is illustrated.Fig. 1 is to show the ground of the high-pressure injection spray nozzle device for being equipped with the 1st embodiment of the invention to change The figure of the condition of construction of good device.

As shown in Figure 1, being equipped with front end in combination in the front end of injection bar 2 causes device 3.It is caused from being arranged in the front end The injection of front end nozzle 4 of the front end of device 3 causes the water (liquid) supplied in device 3 via injection bar 2 and front end, in addition, From be arranged in front end cause device 3 side high-pressure injection spray nozzle device 1 injection via injection bar 2 and front end cause device Cement slurry (curing materials liquid), the air supplied in 3.

Operation machine 5 is bearing injection bar 2 and makes to inject the machinery that bar 2 is moved up and down, rotates and swung.It injects as a result, Bar 2 and front end cause device 3 that can not only move up and down by operation machine 5, additionally it is possible to rotate, swing.

Rotating ring 6 is installed in the rear end of injection bar 2.In addition, injection bar 2 is made of bimetallic tube, into injection bar 2 The cement slurry dual-purpose water supply passageway 7 of inside supplies cement slurry or water (liquid), and the air supply in the outside into injection bar 2 is logical Road 8 supplies air (referring to Fig. 3).In addition, though, using cement slurry dual-purpose water supply passageway 7, making water in the 1st embodiment Mud (curing materials liquid) supply pipe and water supplying pipe are constituted as a supply pipe, but not limited to this, it can also be by cement Slurry (curing materials liquid) supply pipe and water supplying pipe are constituted respectively as different supply pipes.In addition, like this, in Jiang Shui In the case that mud (curing materials liquid) supply pipe and water supplying pipe are configured to different supply pipes, also it can be used cement slurry The multilayer pipe or antipriming pipe of 3 layers of separated pipe of (curing materials liquid) and water etc..In addition, in the 1st embodiment, it will be by bimetallic tube Inside in the injection bar 2 of composition is set as cement slurry dual-purpose water supply passageway 7, its outside is set as air supply passageway 8, but not It is limited to this, the inside in the injection bar 2 being made of bimetallic tube can also be set as air supply passageway, its outside is set as cement Starch dual-purpose water supply passageway.

As described above, front end causes device 3 to be installed on the front end for injecting bar 2 in combination.Moreover, causing device 3 in front end Inside is axially formed the cement slurry dual-purpose water flow being connected to the cement slurry dual-purpose water supply passageway 7 of injection bar 2 at its center Road 9 is axially formed 4 in the peripheral side on the cement slurry dual-purpose water flow road 9 and is connected to the air supply passageway 8 of injection bar 2 Air flow circuit 10 (referring to Fig. 3, Fig. 8).The details of air flow circuit 10 will be illustrated later.In addition, in the 1st embodiment In, using cement slurry dual-purpose water flow road 9, cement slurry (curing materials liquid) flow path and water flow road are configured to a flow path, but not It is limited to this, cement slurry (curing materials liquid) flow path and water flow road can also be respectively structured as different flow paths.

Rotating ring 6 is the supply with the supply source 12 of supply source 11, air from water and cement slurry (curing materials liquid) Each supplying flexible pipe 14,15,16 of water, air and the cement slurry that source 13 is supplied respectively to links, and by water, air and cement Slurry is supplied to the air supply passageway 8 and cement slurry dual-purpose water supply passageway 7 (referring to Fig.1) being arranged in injection bar 2.Picture In this wise, cement slurry, air and the water supplied respectively from the supply source 13 of watering 11, the supply source 12 of air and cement slurry Via each supplying flexible pipe 14,15,16 → rotating ring 6 → each supply passageway 7,8 → each flow path 9,10, sprayed from nozzle etc..Here, Water, cement slurry are supplied to cement slurry dual-purpose water supply passageway 7 from each supplying flexible pipe 14,16 of water, cement slurry.

Then, the composition of device 3 is caused to be specifically described on injection bar 2 and front end using Fig. 2~Fig. 9.Fig. 2 (a) It is that the stereoscopic figure of device, Fig. 2 are caused in the front end for the high-pressure injection spray nozzle device being equipped in the 1st embodiment of the invention It (b) is the figure for indicating the combination pin for combining injection bar and front end to cause device, Fig. 3 is the A-A cross-sectional view of Fig. 2, and Fig. 4 (a) is Fig. 3 The part P-P enlarged drawing, Fig. 4 (b) is to indicate that the figure of the nozzle body portion mounting hole of device is caused in front end.Here, about Fig. 2 (a) and Fig. 3, the upper side for omitting injection bar 2 are shown.

As shown in Fig. 2 (a), injection bar 2 causes device 3 to install in combination with front end as described above.About 2 He of injection bar The combination of device 3 is caused to will be described later in front end.Here, injection bar 2 using by outer diameter 45mm, internal diameter 37mm injection bar outside The bimetallic tube that the injection bar inner tube 18 of pipe 17 and outer diameter 24mm, internal diameter 14mm are constituted.Also, inject the interior of the lower part of bar outer tube 17 Diameter is 42mm, is formed in its underpart in conjunction with pin insertion hole 19, is formed in lower inner surface and combines half periphery of pin 36 big The combination pin of same diameter is caused to inject bar recess portion 20a (referring to Fig.1 0).In addition, from the internal diameter 42mm's for injecting 17 lower part of bar outer tube Upper end starts slightly by lower part, and the outer diameter of injection bar inner tube 18 is formed as 22mm.In addition, the maximum outside diameter DD of device 3 is caused in front end For 68mm, causes to be formed with the cement slurry dual-purpose water flow road 9 that diameter is 14mm inside device 3 in front end, cause device 3 in front end Top be formed with outer diameter be 42mm, the front end of internal diameter 37mm cause device outer tube 17a, with shape be 24mm, internal diameter 14mm Front end cause device inner tube 18a, cause device outer tube 17a and front end to cause to constitute between device inner tube 18a and have in the front end Air flow circuit 10 (referring to Fig. 3).Also, the air flow circuit 10 causes device outer tube 17a to cause to fill with front end by being formed in front end Set the flow path between inner tube 18a and with the fluid communication and be formed in front end 4 flow paths in inside of device 3 caused to constitute (ginseng According to Fig. 8).Like this, the air supply passageway 7 injected in bar 2 causes the air flow circuit 10 in device 3 to be connected to front end.Such as It is upper described, cause the side of device 3 to be provided with the high-pressure injection spray nozzle device 1 of gunite and air in front end, in side Top is formed with and the combination pin front end of half periphery roughly the same diameter of pin 36 is combined to cause device recess portion 20b (referring to figure 10).In addition, causing the front end of device 3 to be provided with the front end nozzle 4 of injection water (liquid) in front end.In addition while the 1st In embodiment, the injection bar 2 of the circular cross-section of outer diameter 45mm or so has been used, but not limited to this, diameter also can be used The injection bar of the circular cross-section of 50mm~140mm or so (such as 75mm or so), in addition, left using diameter 50mm~140mm In the case where the injection bar of the circular cross-section of right (such as 75mm or so), can also make to inject the internal diameter 14mm of bar inner tube 18~ 16mm.Here, the internal diameter of injection bar inner tube 18 is determined by the flow of the flowing water mud in injection bar inner tube 18.In turn, The injection bar with hexagonal cross-section can be used.In addition, being made of spring catch 36a and spring catch 36b in conjunction with pin 36 (referring to figure 2(b)).This combines pin 36 that spring catch 36b is initially inserted into the combination pin insertion hole 19 for injecting 2 lower part of bar, then by spring catch 36a is pressed into the hollow portion for being inserted into the spring catch 36b in conjunction with pin insertion hole 19.

As shown in figure 3, being formed with material liquid injection nozzle 21 and the injection of gunite in high-pressure injection spray nozzle device 1 The air injection nozzle 22 of compressed air.Specifically, being provided with the injection spray of material liquid in the inside of high-pressure injection spray nozzle device 1 Mouth 21, outside are formed with air injection nozzle 22.Like this, if from 1 high pressure spray jetting mud of high-pressure injection spray nozzle device And compressed air, then it is empty from its outside (peripheral part) injection compression from the inside gunite of high-pressure injection spray nozzle device 1 Gas, around the jet flow of cement slurry make compressed air air layer envelope, thus with the air layer quilt of not compressed air The case where film, is compared, and injection can be made to reach distance and increased.

Material liquid injection nozzle 21 is formed in the front end (reference of the nozzle body portion 24 of insertion nozzle body portion mounting hole 23 Fig. 4).Here, as described above, the position that nozzle body portion mounting hole 23 causes the axial height of device 3 different in front end, There are two being alternately formed on circumference etc..In addition, nozzle body portion mounting hole 23 causes to fill in front end in the 1st embodiment The different position of the height of 3 axial direction is set, circumferentially equally spaced there are two formation, however, you can also not be to cause to fill in front end It sets the 3 different position of axial height to be formed, furthermore can also be not formed in equally spaced position on circumference.In addition, nozzle The quantity of main part mounting hole 23 may not be 2, can also form 3,4,6 etc. 2 or more (preferably 4 or more) It is multiple or 1.

Like this, since the position for causing the axial height of device 3 different in front end is formed with multiple nozzle bodies Portion's mounting hole 23 therefore, can by the way that nozzle body portion 24 to be installed on to different nozzle body portion mounting holes 23 depending on the application Induration of various shapes is efficiently made in a short time.

In addition, air injection nozzle 22 is formed by the outer peripheral surface of nozzle body portion 24 and the inner peripheral surface etc. of airhood 25.And And the flow path for causing the air flow circuit 10 in device 3 to reduce towards front end from front end by sectional area, so that compressed air is from sky Gas jet nozzle 22 is to spray at a high speed.In addition, air injection nozzle 22 is by the outer of nozzle body portion 24 in the 1st embodiment The formation such as inner peripheral surface of circumferential surface and airhood 25, but not limited to this, as long as causing the air flow circuit 10 in device 3 to connect with front end Mode logical, around the front inner diameter portion to surround nozzle body portion 24 is constituted, and causes the air flow circuit in device 3 from front end 10 reduce the air spray for being also possible to other modes to the nozzle to spray compressed air at a high speed towards front elevational sectional product Penetrate nozzle.

Nozzle body portion 24 is made of nozzle body 26 and nozzle body extension 27 (referring to Fig. 5).In the 1st embodiment In, nozzle body 26 and nozzle body extension 27 are shaped by the material of the high intensity such as superhard alloy.The nozzle body 26 is In the lesser cylindrical shape of forward portion diameter, rear portion is the diameter cylindrical shape more slightly larger than forward portion.Moreover, nozzle The inside in hollow shape of main part 24 is made of back end inside diameter portion 28, intermediate inside diameter 29, front inner diameter portion 30 (referring to figure 6).Here, Fig. 5 is the figure for indicating the constituent part of the high-pressure injection spray nozzle device in the 1st embodiment of the invention, Fig. 6 is The cross-sectional view of this composition part.The intermediate inside diameter 29 and front inner diameter portion 30 are formed in nozzle body 26, back end inside diameter portion 28 are formed in nozzle body extension 27.Here, the length in back end inside diameter portion 28 is formed as 9mm in the 1st embodiment, The length of intermediate inside diameter 29 is formed as 15mm, and the length L in front inner diameter portion 30 is formed as 8mm (referring to Fig. 7).Also, it is intermediate Inside diameter 29 is formed as inner peripheral surface with the throttling angle of 12 degree~20 degree (preferably 12 degree~15 degree, more preferably 12 degree~13 degree) The conical surface shape of β extreme direction undergauge forward, front inner diameter portion 30 are connected to the front end of intermediate inside diameter 29, are formed as hollow shape Internal diameter d is roughly the same with the intermediate diameter of front end of inside diameter 29, and length L is the diameter of the front end of intermediate inside diameter 29 2 times of d~4 times (preferably 3 times~4 times).Here, the diameter d in front inner diameter portion 30 is formed as in the 1st embodiment 2mm.In addition, back end inside diameter portion 28 is connected to the rear end of intermediate inside diameter 29, the diameter of the inside of the interconnecting part is formed as in Between inside diameter 29 rear end diameter it is roughly the same.Here, Fig. 7 is the high-pressure injection indicated in the 1st embodiment of the invention The figure of the size of spray nozzle device.If also, nozzle body portion 24 is installed on front end and causes device 3, becomes forward end and causes to fill Set the state that 7mm is highlighted inside the cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) in 3.Here, nozzle body portion 24 Being projected into front end and causing the length in cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) in device 3 is that front end causes to fill Set the half (D/2) of the diameter (D) on the cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) in 3 (referring to Fig. 7~Fig. 9).? This, Fig. 8 is the B-B cross-sectional view of Fig. 3, and Fig. 9 is the C-C cross-sectional view of Fig. 3.In addition, in the 1st embodiment, nozzle body portion 24 Overall length LL (32mm) be formed as 16 times of diameter d (2mm) of front end of intermediate inside diameter 29, but not limited to this, nozzle body The overall length LL in portion 24 can also be formed as 15 times~20 times of the diameter of the front end of intermediate inside diameter 29, in addition, that cannot make to spray In the case that the overall length LL of mouth main part 24 is elongated, the overall length LL of nozzle body portion 24 can also be made to be formed as intermediate inside diameter 29 10 times~20 times of diameter d of front end.In addition, the back end inside diameter portion 28 inside nozzle body extension 27 is formed with by The section in the back end inside diameter portion 28 of empty shape is divided into the flow path cutting part 31 in multiple spaces.The flow path cutting part 31 is formed as wide Spend the cross shape of 1.5mm, length 5.5mm, depth 5.0mm (referring to Fig. 5).In addition, the depth length of the flow path cutting part 31 It is not limited to 5.0mm, as long as being formed with defined length.As described above, the back end inside diameter portion 28 in hollow shape is provided with The flow path cutting part 31 of cross shape, the area for the part that the cross shape of the flow path cutting part 31 intersects are 2.25mm², this Outside, the hollow shape sectional area (diameter 5.5mm) in the back end inside diameter portion 28 near flow path cutting part 31 is 23.7mm², therefore ten The area for the part that word shape intersects is the 9.5% of hollow shape sectional area.Like this, flow path cutting part 31 is in following shape Shape: the approximate centre part in the back end inside diameter portion 28 of the hollow shape near flow path cutting part 31 has flow path cutting part 31 The part of substantially 10% area of neighbouring hollow shape sectional area.In addition, though in the present embodiment, flow path cutting part 31 are in the shape of the part of substantially 10% area with the hollow shape sectional area near flow path cutting part 31, but are not limited to This, be also possible to the hollow shape sectional area for having near flow path cutting part 31 2%~25% (preferably 2%~20% (more Preferably 2%~15%) shape of the part of area).

The section for the flow path divided by flow path cutting part 31 adds up to area (9.45mm²) account near the flow path cutting part 31 Hollow shape sectional area (the 23.7mm in back end inside diameter portion 28²) 40%.In addition, in the present embodiment, illustrating by flow path The total area in the section for the flow path that cutting part 31 is divided accounts for the hollow shape in the back end inside diameter portion 28 near the flow path cutting part 31 The 40% of sectional area, but not limited to this, it can also make the section for the flow path divided by flow path cutting part 31 that area be added up to account for the stream 40%~60% of hollow shape sectional area near road cutting part 31.

In the present embodiment, due to the hollow shape next to the back end inside diameter portion 28 of 31 upstream and downstream of flow path cutting part The diameter in shape section is identical (5.5mm), so the hollow shape section in the back end inside diameter portion 28 being set as near flow path lattice 31 Product, but the diameter in the hollow shape section in the back end inside diameter portion 28 next to 31 upstream and downstream of flow path cutting part is different In the case of, can will be replaced with " near flow path cutting part 31 " " 31 upstream of flow path cutting part " or " 31 downstream of flow path cutting part " into Row application.

Nozzle body supporting member 32 is installed from the front side outer peripheral surface of nozzle body 26, and front end outer peripheral surface is hexagonal shape, At rear, outer peripheral surface is formed with external screw thread.In addition, the front end outer peripheral surface of airhood 25 is hexagonal shape, in intermediate outer peripheral surface shape At there is an external screw thread, and along the circumferential direction equally spaced it is formed with notch 33 in the rear end of intermediate outer peripheral surface (referring to Fig. 5). The notch 33 is to be installed on front end in order to ensure airhood 25 to cause the flow path of compressed air when device 3 and be arranged.This Outside, the hollow inside of airhood 25 from notch 33 forward extreme direction undergauge and form conical surface shape (referring to Fig. 6).

Then, the cement slurry dual-purpose in device 3 is caused via the cement slurry dual-purpose water supply passageway 7 in injection bar 2, front end The cement slurry that water flow road 9 supplies is sent into nozzle body portion 24 according to the sequence of 27 → nozzle body of nozzle body extension 26, From the injection of material liquid injection nozzle 21 (referring to Fig. 8).In addition, causing to fill via the air supply passageway 8 in injection bar 2, front end The compressed air that the air flow circuit 10 in 3 supplies is set to spray from air injection nozzle 22 (referring to Fig. 8).Here, air injection spray Mouth 22 is connected to two air flow circuits 10.Like this, the high-pressure injection spray nozzle device 1 in the 1st embodiment is by with lower component Constitute: nozzle body portion 24 is made of nozzle body 26 and nozzle body extension 27；Nozzle body portion supporting member 32；Air Cover 25.

It causes the lower part of device 3 in front end, is provided with valve for pressure difference 34 (referring to Fig. 3).Moreover, in drilling, to injection bar 2 Cement slurry dual-purpose water flow road 7 supply low pressure water, the low pressure water via valve for pressure difference 34 from front end nozzle 4 spray, terminate in drilling Afterwards, it by supplying cement slurry to the cement slurry dual-purpose water flow road 7 of injection bar 2, so that valve for pressure difference 34 is closed, is sprayed from material liquid Nozzle 21 (high-pressure injection spray nozzle device 1) gunite.

Then, using Figure 10, Figure 11, the assembling of device 3 and high-pressure injection spray nozzle device 1 is caused to injection bar 2, front end Method is illustrated.Here, Figure 10 is to show the high-pressure injection spray nozzle device and its periphery device of the 1st embodiment of the invention The figure of the assemble method of tool, Figure 11 are the figures for showing the installation method of the high-pressure injection spray nozzle device.

As shown in Figure 10, the top of device upper tube 35 is caused to be inserted into from front end in the lower end for being initially injected bar 2.It is somebody's turn to do in insertion When injecting bar 2, makes the injection bar protrusion 44 of the semicircular in shape for the lower end for being formed in injection bar outer tube 17 and be formed in front end It causes the front end of the semicircular in shape on the top of device upper tube 35 to cause device upper tube internal projection 45 chimeric, carries out front end It causes device upper tube 35 and injects the contraposition of the circumferencial direction of bar 2, installation.Then, from the combination pin insertion of injection 2 lower part of bar The insertion of hole 19 combines pin 36, makes that the combination pin injection bar recess portion 20a of pin 36 and injection 18 lower part of bar inner tube and front end is combined to make Cause device recess portion 20b chimeric at the combination pin front end on 35 top of device upper tube, device 3 and injection bar 2 are caused in front end as a result, In conjunction with.In addition, though will be formed on 4 air flow circuits 10 that front end is caused in device upper tube 35 in the 1st embodiment The upper and lower part at end is used as and is integrally illustrated, but not limited to this, front end can also be will be formed in and cause device upper tube The upper and lower part of 4 10 upper ends of air flow circuit in 35 is separately constructed.They are separately constructed in this way, before easy to form Cause 4 air flow circuits 10 in device upper tube 35 in end.

Then, be formed in front end cause device upper tube 35 side nozzle body portion mounting hole 23 install high pressure spray Penetrate spray nozzle device 1 (referring to Fig.1 1).Specifically, causing device upper tube in front end according to the sequence of (1) below~(3) 35 nozzle body portion mounting hole 23 installs high-pressure injection spray nozzle device 1.

(1) it is inserted into nozzle body extension 27 from the rear portion of nozzle body 26, makes to be formed in nozzle body extension 27 The external screw thread of front end periphery and the internal screw thread for the rear end inner circumferential for being formed in nozzle body 26 are threadedly engaged, and thus prolong nozzle body Long portion 27 is installed on nozzle body 26.

(2) then, nozzle body branch is embedded in from the preceding extreme direction for the nozzle body 26 for being equipped with nozzle body extension 27 Bearing member 32 is inserted into nozzle body portion mounting hole 23 in this state.The nozzle body supporting member 32 is being inserted into nozzle master When body portion mounting hole 23, by causing the external screw thread for the rear end periphery for being formed in nozzle body supporting member 32 with front end is formed in The internal screw thread of the nozzle body portion mounting hole 23 of device 3 is threadedly engaged, to (also include nozzle master by nozzle body supporting member 32 Body 26 and nozzle body extension 27) it is installed on front end and causes device 3.The nozzle body extension 27 installed so is highlightedly pacified It is attached to the substantially central portion (referring to Fig. 7) on the cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) that front end is caused in device 3. In other words, it is mounted on front end the back end inside diameter portion 28 of the nozzle body portion 24 on device 3 is caused highlightedly to be installed to front end and make At the substantially central portion (D/2) on the cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) in device 3.In addition, implementing the 1st In mode, it is mounted on front end the back end inside diameter portion 28 of the nozzle body portion 24 on device 3 is caused highlightedly to be installed to front end and cause The substantially central portion on the cement slurry dual-purpose water flow road 9 in device 3, but not limited to this, it also can protrude through front end and cause in device 3 Cement slurry dual-purpose water flow road 9 cross section at least substantially 1/3, in addition, causing to fill in front end as the 1st embodiment Set 3 the different position of axial height be formed with multiple nozzle body portion mounting holes 23 in the case where, front end can also be projected to Cause at least substantially 1/2~substantially 2/3 (preferably substantially 2/3) in 9 section of cement slurry dual-purpose water flow road in device 3.

(3) then, airhood 25 is embedded in from extreme direction before nozzle body 26, by making the periphery for being formed in airhood 25 External screw thread causes the internal screw thread of airhood mounting hole 43 of 3 side inner circumferential of device to be threadedly engaged with front end is formed in, thus by empty Gas hood 25 is installed on front end and causes device 3.

Then, device lower tube is caused in the front end that front end causes the installation of 35 lower part of device upper tube to be built-in with valve for pressure difference 34 39.Specifically, by make front end cause device lower tube 39 upper periphery external screw thread and front end cause device upper tube The internal screw thread of 35 lower part inner circumferential is threadedly engaged, and is caused device lower tube 39 to be installed on front end front end and is caused device upper tube 35。

Like this, it is caused in device 3 by being protrusively provided in the back end inside diameter portion 28 of nozzle body portion 24 to front end Cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) substantially central portion, it can be ensured that it is straight inside nozzle body portion 24 Linear distance long enough can reduce the generation of the turbulent flow of flowing water mud in nozzle body portion 24, by increasing from nozzle The cutting power of the cement slurry of the front end injection of main part 24, can destroy the institutional framework of ground, cement slurry is ejected into far Distance.In turn, the section of the flow path after being divided by flow path cutting part 31 adds up to area to be formed as accounting near flow path cutting part 31 40% shape of the hollow shape sectional area in back end inside diameter portion 28 flows in the back end inside diameter portion 28 of nozzle body portion 24 Cement slurry branches to each space divided by flow path cutting part 31, is compressed on one side with the compressing force of appropriateness, on one side before Therefore extreme direction conveying can make cement slurry further speedup in each space after being divided by flow path cutting part 31 on one side, And imperceptibly laminarization, by increasing cutting for the cement slurry sprayed from the material liquid injection nozzle 21 of 24 front end of nozzle body portion Ability is cut, the institutional framework of ground is destroyed, cement slurry can be ejected into farther distance.This by flow path cutting part 31 for being divided The section of flow path the case where adding up to the 40%~60% of the hollow shape sectional area that accounts near flow path cutting part 31 of area be also Similarly.

Further, since flowing water mud is divided to and is divided by flow path in the back end inside diameter portion 28 of nozzle body portion 24 Each space and extreme direction conveying forward after the segmentation of portion 31, so can make cement slurry after being divided by flow path cutting part 31 Each space more imperceptibly laminarization, by increasing the cement sprayed from the material liquid injection nozzle 21 of 24 front end of nozzle body portion The cutting power of slurry can destroy the institutional framework of ground, so that cement slurry is ejected into farther distance.If carried out to this detailed Thin narration, the back end inside diameter portion 28 of nozzle body portion 24 substantially central portion flowing water mud and flow path cutting part 31 it is big Central part collision is caused, since the cement slurry of the substantially central portion in the back end inside diameter portion 28 after the collision is flowed by flow path cutting part Each spaces of 31 segmentations, speedup and towards undergauge and the inner peripheral surface of intermediate inside diameter that is formed conveys, therefore can reduce The thickness in the boundary layer for the turbulent flow that inner peripheral surface of inside diameter generates among this, can more imperceptibly carry out laminarization.Lead to as a result, The cutting power for increasing the cement slurry sprayed from the material liquid injection nozzle 21 of 24 front end of nozzle body portion is crossed, ground can be destroyed Institutional framework, so that cement slurry is ejected into farther distance.

As described above, causing to fill with front end is formed in by the external screw thread on the outside of the outer peripheral surface that is formed in nozzle body portion 24 It sets the internal screw thread on the inside of the inner peripheral surface of 3 nozzle body portion mounting hole 23 to be threadedly engaged, nozzle body portion 24 can be loaded and unloaded certainly It such as is installed on front end and causes device 3, therefore nozzle body portion 24 can be replaced depending on the application and freely, and can be with letter Nozzle body portion 24 is installed on front end and causes device 3 by easy method.

Then, the front end for having the high-pressure injection spray nozzle device being equipped in the 1st embodiment of the invention is caused to fill The construction procedure for the ground improvement device set is briefly described.

Firstly, after it will inject bar 2 and be positioned at the position that will be excavated, in the position from the front end nozzle 4 of injection bar 2 It sprays water (liquid), and drills to defined depth.Then, after the depth as defined in being bored into, make to inject the swing of bar 2 on one side, Compressed air is sprayed from 21 gunite of material liquid injection nozzle and from air injection nozzle 22 respectively on one side.It is specific and Speech, on one side from injection nozzle (material liquid injection nozzle 21, air injection nozzle 22) gunite and compressed air, on one side Make to inject 30 degree (the defined angle) of swing of bar 2.

Then, in the state of injecting bar 2 and swinging 30 degree, bar 2 will be injected and lift defined length (such as 5cm or less is (excellent It is selected as 2.5cm).Then, be repeated it is clockwise swing spray → lift injection bar 2 → swing counterclockwise is sprayed → lift Injection bar 2 → clockwise swing is sprayed → lifts injection bar 2, until coming from injection nozzle (material liquid injection nozzle 21, air Injection nozzle 22) injection terminate.In addition, make to inject the swing of bar 2 in the 1st embodiment, but not limited to this, it can also make Bar 2 is injected to direction (can with right rotation, can be with anticlockwise) rotation.

Then, lifted bar 2 is injected from excavated hole using crane, taken out out of excavated hole.By doing so, in underground Form fan-shaped induration.

(the 2nd embodiment)

Then, it is illustrated referring to 2nd embodiment of the attached drawing to high-pressure injection spray nozzle device of the invention.Here, figure 12 (a) be the enlarged drawing of the part P-P of Fig. 3 of the high-pressure injection spray nozzle device of the 2nd embodiment of the invention, and Figure 12 (b) is Indicate that the figure of the nozzle body portion mounting hole of device is caused in front end, Figure 13 is the high pressure spray for showing the 2nd embodiment of the invention Penetrate the figure of the constituent part of spray nozzle device.Figure 14 is the cross-sectional view of this composition part.

The difference of 2nd embodiment and the 1st embodiment of the invention essentially consists in, in the 1st embodiment, structure It is separately constructed at the nozzle body 26 and nozzle body extension 27 of nozzle body portion 24, in contrast, in the 2nd embodiment In, the nozzle body and nozzle body extension that constitute the nozzle body portion of the 1st embodiment are integrally formed, it is real the 1st It applies in mode, nozzle body portion 24 is made to project to the substantially central portion on the cement slurry dual-purpose water flow road 9 that front end is caused in device 3, In contrast, in the 2nd embodiment, it is configured to that nozzle body portion 24x is made not protrude into the cement slurry that device 3x is caused in front end In dual-purpose water flow road 9.In addition, being illustrated centered on the part different from the 1st embodiment in the 2nd embodiment.This Outside, in the 2nd embodiment, (also including approximate constitute) is constituted for identical with the 1st embodiment, uses identical attached drawing Label, omits the description as the component for serving the same role effect.

In the present embodiment, the inner surface portion of nozzle body portion 24x and nozzle body rear component 48x are whole by superhard The high-intensitive material of alloy etc. is formed.Here, nozzle body rear component 48x is to compare nozzle body portion in forward portion diameter The big hollow cylindrical of 24x rear portion, rear portion are the diameter hollow cylindricals smaller than forward portion.In addition, In present embodiment, the inner surface of nozzle body 24x is shaped by the high-intensitive material such as superhard alloy, however, the present invention is not limited thereto, The whole material by the high intensity such as superhard alloy of nozzle body portion 24x can also be made to shape.The shape of nozzle body portion 24x is Small generally cylindrical shaped of the diameter of the front end side of forward portion, middle section is the diameter cylinder more slightly larger than forward portion Shape, rear portion are the diameter cylindrical shapes more slightly larger than middle section.In addition, the rear end face in nozzle body portion 24x forms O shape Ring mounting recess 47x (referring to Figure 14 (b)).

The inside in hollow shape of nozzle body portion 24x is by back end inside diameter portion 28x, centre inside diameter 29x and front end Diameter portion 30x constitutes (referring to Fig.1 4 (b)).Here, the length of back end inside diameter portion 28x is formed as 5.0mm in the 2nd embodiment, The length of intermediate inside diameter 29x is formed as 5.5mm, and the length of front inner diameter portion 30x is formed as 8.0mm.Also, intermediate inside diameter 29x is formed as inner peripheral surface with 12 degree~20 degree (preferably 12 degree~15 degree, more preferably 12 degree~13 degree) of throttling angle beta forward The conical surface shape of extreme direction undergauge, front inner diameter portion 30x are connected to the front end of intermediate inside diameter 29x, are formed as its hollow shape Internal diameter d is roughly the same with the diameter of front end of intermediate inside diameter 29x, and length L is the front end of intermediate inside diameter 29x 2 times of diameter d~4 times (preferably 3 times~4 times).Here, the diameter of front inner diameter portion 30x is formed in the 2nd embodiment For 4.0mm (referring to Fig.1 4 (b)).In addition, the overall length LL (18.5mm) of nozzle body portion 24x is formed as in the 2nd embodiment 4.625 times of the diameter d (4mm) of the front end of intermediate inside diameter 29x, but not limited to this, the overall length of nozzle body portion 24x can also be with Be formed as 4 times~20 times of the diameter of the front end of intermediate inside diameter 29x.In addition, back end inside diameter portion 28x and intermediate inside diameter 29x Rear end connection, the diameter of the inside of the interconnecting part is formed as roughly the same with the diameter of rear end of centre inside diameter 29x.And And when nozzle body portion 24x is installed on front end and causes device 3x, nozzle body portion 24x does not protrude into front end and causes device 3x Cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) it is internal, become and be accommodated in the nozzle body portion that device 3x is caused in front end State in mounting hole 23x.In addition, being formed in the back end inside diameter portion 28x of the rear portion of nozzle body portion 24x by hollow shape The back end inside diameter portion section 28x of shape is divided into the flow path cutting part 31x in multiple spaces.Flow path cutting part 31x is formed as width The cross shape (referring to Fig.1 3 (b)) of 2.0mm, length 10.0mm, depth 3.5mm.In addition, the depth of flow path cutting part 31x Length is not limited to 3.5mm, as long as being formed with defined length.In addition, the length of nozzle body rear component 48x is 6.5mm is connected to the rear end of intermediate inside diameter 29x, the diameter of the inside of hollow shape be formed as with after intermediate inside diameter 29x The diameter at end is roughly the same.In addition, airhood 25x, nozzle body supporting member 32x are almost the same with the 1st embodiment, therefore save Slightly illustrate.

As described above, being provided with the flow path cutting part 31x of cross shape in the back end inside diameter portion 28x of hollow shape, but should The area for the part that the cross shape of flow path cutting part 31x intersects is 4.00mm², further, since near flow path cutting part 31x Back end inside diameter portion 28x hollow shape sectional area (diameter 10.0mm) be 78.5mm², therefore, cross shape cross section Area is the 5.1% of hollow shape sectional area.Like this, flow path cutting part 31x has following shape: in flow path cutting part The approximate centre part of the back end inside diameter portion 28x of hollow shape near 31x, with the hollow shape near flow path cutting part 31x The part of substantially 5.0% area of shape sectional area.In addition, though in the present embodiment, flow path cutting part 31x is in have stream The shape of the part of substantially 5.0% area of the hollow shape sectional area near the cutting part 31x of road, but not limited to this, as above It is described, be also possible in the hollow shape sectional area near flow path cutting part 31x 2%~25% (preferably 2%~ 20% (more preferably 2%~15%)) area part shape.

In addition, adding up to area (42.5mm by the section of the flow path of flow path cutting part 31x segmentation²), account for the flow path cutting part Hollow shape sectional area (78.5mm near 31x²) 54.1%.In addition, though in the present embodiment, illustrating by flow path The section of the flow path of cutting part 31x segmentation adds up to area, accounts for the hollow shape sectional area near flow path cutting part 31x 54.1%, but as described above, be also possible to add up to area to account for the flow path point by the section of the flow path cutting part 31x flow path divided Cut 40%~60% of the hollow shape sectional area near portion 31x.

In the present embodiment, due to next to flow path cutting part 31x upstream and downstream back end inside diameter portion 28x it is hollow The diameter of shaped cross is identical (10.0mm), therefore is set as the hollow shape of the back end inside diameter portion 28x near flow path cutting part 31x Sectional area, but next to flow path cutting part 31x upstream and downstream back end inside diameter portion 28x hollow shape section diameter not With in the case where, " upstream flow path cutting part 31x " or " flow path cutting part can will be replaced with " near flow path cutting part 31x " It is applied in the downstream 31x ".

Then, it is illustrated to high-pressure injection nozzle 1x is mounted on the method that device 3x is caused in front end.In addition, for The installation method difference of the nozzle body portion 24 of 1 embodiment is illustrated.Here, Figure 15 is to be mounted on of the invention Cause the cross-sectional view of the high-pressure injection spray nozzle device of device in the front end of 2 embodiments.

Firstly, nozzle body rear component 48x to be inserted into the nozzle body for being formed in the side that device 3x is caused in front end Portion mounting hole 23x (2 (b), Figure 15 referring to Fig.1).Here, causing the side of device 3x in the front end for being formed in present embodiment Nozzle body mounting hole 23x is formed with nozzle body extension retaining lugs 38x (2 (b), Figure 15 referring to Fig.1), therefore nozzle The rear end of main body rear component 48x is contacted with nozzle body extension retaining lugs 38x, and nozzle body rear component 48x is sprayed Mouth body extending portion retaining lugs 38x bearing.

Then, nozzle body portion 24x is inserted into nozzle body portion mounting hole 23x.Although moreover, nozzle body portion 24x Rear end and nozzle body rear component 48x front end side contact, but the O-ring installation for being inserted into the rear end nozzle body portion 24x is recessed The O-ring 46x of portion 47x is sealed.The nozzle body rear component 48x (including nozzle body portion 24x) installed in this way is not protruded into The cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) in device 3x is caused in front end, becomes and is accommodated in front end and causes device 3x Nozzle body portion mounting hole 23x in state (referring to Fig.1 5).

Then, airhood 25x is from the preceding extreme direction of nozzle body portion 24x insertion etc., with suitable with the installation of the 1st embodiment High-pressure injection spray nozzle device 1x comprising nozzle body portion 24x is installed on nozzle body portion mounting hole by the identical sequence of sequence 23x.The nozzle body rear component 48x (including nozzle body portion 24x) installed in this way is different from the 1st embodiment, with storage In the state installation being formed in the nozzle body portion mounting hole 23 that device 3x is caused in front end.

Like this, according to the present embodiment, cement slurry is by the flow path of the back end inside diameter portion 28x of nozzle body portion 24x point The fine Ground Split of portion 31x is cut, thus the turbulent condition of cement slurry is destroyed, cement slurry flow velocity point in divided each space By more imperceptibly laminarization while cloth homogenizes.Moreover, the cement slurry of the laminarization is on one side by inner peripheral surface, extreme direction contracts forward Diameter and the intermediate inside diameter 29x rectificationization of nozzle body portion 24x formed, one side flow velocity significantly increase, and flow velocity increases Cement slurry the nozzle body portion 24x's roughly the same with the diameter of front end of intermediate inside diameter 29x of nozzle body portion 24x Rectilinear propagation significantly increases in front inner diameter portion 30x.As a result, by making the cement slurry sprayed from the front end nozzle body portion 24x Cutting power further increases, and can destroy the institutional framework of ground, so that cement slurry is ejected into farther distance.If to this into Row narration in detail, then divide in the substantially central portion flowing water mud of the back end inside diameter portion 28x of nozzle body portion 24x and flow path The substantially central portion of portion 31x is collided, since the cement of the substantially central portion of the back end inside diameter portion 28x after the collision is flowed by flowing Each space of road cutting part 31x segmentation, speed increase and towards undergauge and the inner peripheral surface of intermediate inside diameter that is formed conveys, Therefore the thickness that the boundary layer for the turbulent flow that the inner peripheral surface of inside diameter among this generates can be reduced, being capable of more imperceptibly laminar flow Change.In turn, area is added up to be in account for the rear end near flow path cutting part 31x by the section of the flow path after flow path cutting part 31x segmentation Therefore 54.1% shape of the hollow shape sectional area of inside diameter 28x is flowed in the back end inside diameter portion 28x of nozzle body portion 24x Dynamic cement slurry by flow path cutting part 31x segmentation after each space in shunt and with appropriateness compressing force it is compressed simultaneously Forward extreme direction convey, therefore, can make cement slurry make on one side in each space divided by flow path cutting part 31x speed into One step increase carries out fine laminarization on one side, is sprayed by increasing from the material liquid injection nozzle 21x of the front end nozzle body portion 24x The cutting power for the cement slurry penetrated can destroy the institutional framework of ground, so that cement slurry is ejected into farther distance.As a result, By increasing the cutting power from the material liquid injection nozzle 21x of the front end the nozzle body portion 24x cement slurry sprayed, can destroy The institutional framework of ground, so that cement slurry is ejected into farther distance.This is for section for the flow path divided by flow path cutting part 31x Face adds up to the case where 40%~60% of the hollow shape sectional area that accounts near flow path cutting part 31x of area to be also same.? This, the 2nd embodiment is also applied for following variations.

(the 3rd embodiment)

Then, the 3rd embodiment that high-pressure injection spray nozzle device 1y of the invention is directed at while referring to attached drawing is said It is bright.Here, Figure 16 (a) is the enlarged drawing of the part P-P of Fig. 3 of the high-pressure injection spray nozzle device of the 3rd embodiment of the invention, Figure 16 (b) is the figure for showing the nozzle body portion mounting hole that device is caused in front end, and Figure 17 is to show the 3rd embodiment of the invention High-pressure injection spray nozzle device constituent part figure.Figure 18 is the cross-sectional view of this composition part.

3rd embodiment of the invention and the 1st embodiment the difference is that, in the 1st embodiment, relative to Nozzle body extension 27 is set to be projected into the substantially central portion on the cement slurry dual-purpose water flow road 9 that front end is caused in device 3, the 3rd In embodiment, cause nozzle body extension 27y forward end prominent in the cement slurry dual-purpose water flow road 9 of device 3y.Separately Outside, it in the 3rd embodiment, is illustrated centered on the part different from the 1st embodiment.In addition, in the 3rd embodiment In, (also include approximate composition) is constituted for identical with the 1st embodiment, using identical appended drawing reference, as playing phase With function and effect component and omit the description.

The nozzle body portion 24y of present embodiment is made of nozzle body 26y and nozzle body extension 27y (referring to figure 18).In the 3rd embodiment, the inner surface portion and nozzle body extension 27y of nozzle body 26y is contour by superhard alloy The material of intensity shapes.In addition, though the inner surface portion of nozzle body 26y is shaped by the material of the high intensity such as superhard alloy, but It is without being limited thereto, the whole material by the high intensity such as superhard alloy of nozzle body 26y can also be made to shape.Nozzle body 26y's Forward portion is that point diameter is lesser generally cylindrical shaped, and middle section is the diameter cylindrical shape more slightly larger than forward portion, Rear portion is the diameter cylindrical shape more slightly larger than middle section.It is recessed that O-ring installation is formed in the rear end face of nozzle body 26y Portion 47y (referring to Fig.1 8 (b)).In addition, nozzle body extension 27y is its forward portion diameter than nozzle body 26y rear part Divide big cylindrical shape, rear portion is the diameter cylindrical shape smaller than forward portion.

The inside in hollow shape of nozzle body portion 24y is by back end inside diameter portion 28y, intermediate inside diameter 29y, front inner diameter Portion 30y constitutes (referring to Fig.1 8).The intermediate inside diameter 29y and front inner diameter portion 30y are formed in nozzle body 26y, in rear end Diameter portion 28y is formed in nozzle body extension 27y.Here, the length of back end inside diameter portion 28y is formed in the 3rd embodiment For 7.0mm, the length of intermediate inside diameter 29y is formed as 10.0mm, and the length in front inner diameter portion 30 is formed as 8.0mm.In also, Between inside diameter 29y be formed as inner peripheral surface with 12 degree~20 degree (preferably 12 degree~15 degree, more preferably 12 degree~13 degree) of section The conical surface shape of angle beta extreme direction undergauge forward is flowed, front inner diameter portion 30y is connected to the front end of centre inside diameter 29y, is formed as wherein The diameter of the inside of empty shape is roughly the same with the diameter of front end of intermediate inside diameter 29y, and length L is intermediate inside diameter 29y's 2 times of the diameter d of front end~4 times (preferably 3 times~4 times) (referring to Fig.1 8).Here, in the 3rd embodiment, front inner diameter The diameter of portion 30y is formed as 4.0mm.In addition, the overall length LL (25mm) of nozzle body portion 24y is formed as in the 3rd embodiment 6.25 times of the diameter d (4mm) of the front end of intermediate inside diameter 29y, but not limited to this, the overall length of nozzle body portion 24y can also be with Be formed as 6 times~20 times of the diameter of the front end of intermediate inside diameter 29y.In addition, back end inside diameter portion 28y and intermediate inside diameter 29y Rear end connection, the diameter of the inside of the interconnecting part is formed as roughly the same with the diameter of rear end of centre inside diameter 29y.And And if nozzle body portion 24y is installed on front end and device 3y, nozzle body portion 24y is caused not to protrude into front end and cause device 3y Cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) it is internal, and become and be accommodated in the nozzle body that device 3y is caused in front end State in portion mounting hole 23y.In addition, the back end inside diameter portion 28y inside nozzle body extension 27y is formed with hollow shape The back end inside diameter portion section 28y of shape is divided into the flow path cutting part 31y in multiple spaces.Flow path cutting part 31y is formed as width The cross shape (referring to Fig.1 7) of 2.0mm, length 10.0mm, depth 4.5mm.In addition, the depth length of flow path cutting part 31y It is not limited to 4.5mm, as long as being formed with defined length.Here, nozzle body supporting member 32y, airhood 25y and the 1st are in fact It is almost the same to apply mode, and the description is omitted.

As described above, although the back end inside diameter portion 28y of hollow shape is provided with the flow path cutting part 31y of cross shape, The area for the part that the cross shape of flow path cutting part 31y intersects is 4.00mm², further, since near flow path cutting part 31y Back end inside diameter portion 28y hollow shape sectional area (diameter 10.0mm) be 78.5mm², therefore the part of cross shape intersection Area is the 5.1% of hollow shape sectional area.Like this, flow path cutting part 31y becomes following shape: in flow path cutting part The substantially central portion of the back end inside diameter portion 28y of hollow shape near 31y, with the hollow shape near flow path cutting part 31y The part of the area of substantially the 5.0% of sectional area.In addition, though in the present embodiment, flow path cutting part 31y is in have flow path The shape of the part of substantially 5.0% area of the hollow shape sectional area near cutting part 31y, but not limited to this, institute as above It states, is also possible in 2%~25% (preferably 2%~20% with the hollow shape sectional area near flow path cutting part 31y (more preferably 2%~15%)) area part shape.

In addition, adding up to area (42.5mm by the section of the flow path of flow path cutting part 31y segmentation²) account for the flow path cutting part Hollow shape sectional area (78.5mm near 31y²) 54.1%.In addition, though in the present embodiment, illustrating by flow path The section of the flow path of cutting part 31y segmentation adds up to area to account for the hollow shape sectional area near flow path cutting part 31y 54.1%, but as described above, be also possible to add up to area to account for the flow path point by the section of the flow path cutting part 31y flow path divided Cut 40%~60% of the hollow shape sectional area near portion 31y.

In the present embodiment, due to next to flow path cutting part 31y upstream and downstream back end inside diameter portion 28y it is hollow The diameter of shaped cross is identical (10.0mm), therefore is set as the hollow shape of the back end inside diameter portion 28y near flow path cutting part 31y Sectional area, but next to flow path cutting part 31y upstream and downstream back end inside diameter portion 28y hollow shape section diameter not With in the case where, " upstream flow path cutting part 31y " or " flow path cutting part can will be replaced with " near flow path cutting part 31y " It is applied in the downstream 31y ".

Then, using Figure 19, the method for installing high-pressure injection spray nozzle device 1y on device 3y is caused to say in front end It is bright.In addition, being illustrated to the part different from the installation method of nozzle body portion 24 of the 1st embodiment.Here, Figure 19 is It is mounted on the cross-sectional view for the high-pressure injection spray nozzle device that front end is caused on device.

Firstly, nozzle body extension 27y is inserted into the nozzle body portion for being formed in the side that device 3y is caused in front end Mounting hole 23y (referring to Fig.1 9).Here, causing the nozzle body portion of the side of device 3y in the front end for being formed in present embodiment Mounting hole 23y is formed with nozzle body extension retaining lugs 38y (6 (b), Figure 19 referring to Fig.1), therefore nozzle body extension The rear end of 27y is contacted with nozzle body extension retaining lugs 38y, and nozzle body extension 27y is consolidated by nozzle body extension Determine protrusion 38y bearing.

Then, nozzle body 26y is inserted into nozzle body portion mounting hole 23y.Then, the rear end nozzle body 26y and spray Mouth body extending portion 27y front end side contact, but it is inserted into the O-ring of the O-ring mounting recess 47y of the rear end nozzle body 26y 46y sealing.The nozzle body extension 27y installed in this way, which becomes, is accommodated in the nozzle body portion mounting hole that device 3y is caused in front end State (referring to Fig.1 9) in 23y.

Then, airhood 25y is from the preceding extreme direction of nozzle body 26y insertion etc., with the erection sequence with the 1st embodiment High-pressure injection spray nozzle device 1y comprising nozzle body portion 24y is installed on nozzle body portion mounting hole 23y by identical sequence. The nozzle body extension 27y installed in this way is different from the 1st embodiment, causes nozzle master in device 3y to be accommodated in front end State installation in body portion mounting hole 23y.

Like this, according to the present embodiment, cement slurry is divided by the flow path of the back end inside diameter portion 28y of nozzle body portion 24y The fine Ground Split of portion 31y, thus the turbulent condition of cement slurry is destroyed, cement slurry velocity flow profile in divided each space By more imperceptibly laminarization while homogenization.Moreover, the cement slurry of the laminarization is on one side by inner peripheral surface, extreme direction contracts forward Diameter and the intermediate inside diameter 29y rectificationization of nozzle body portion 24y formed, one side flow velocity significantly increase, and flow velocity increases Cement slurry the nozzle body portion 24y's roughly the same with the diameter of front end of intermediate inside diameter 29y of nozzle body portion 24y Rectilinear propagation significantly increases in front inner diameter portion 30y.If this is described in detail, in the rear end of nozzle body portion 24y The substantially central portion flowing water mud of diameter portion 28y and the substantially central portion of flow path cutting part 31y are collided, after the collision The cement slurry of the substantially central portion of back end inside diameter portion 28y is flowed into each space divided by flow path cutting part 31y, and speed increases And towards the inner peripheral surface conveying of undergauge and the intermediate inside diameter that is formed, therefore the inner peripheral surface of inside diameter among this can be reduced The thickness in the boundary layer of the turbulent flow of generation, being capable of more imperceptibly laminarization.In turn, by the flow path after flow path cutting part 31y segmentation Section add up to area be in account for back end inside diameter portion 28y near flow path cutting part 31y hollow shape sectional area 54.1% Shape, therefore, nozzle body portion 24y back end inside diameter portion 28y flowing water mud by flow path cutting part 31y segmentation after In each space shunt and with appropriateness compressing force it is compressed and meanwhile forward extreme direction convey, therefore, can make spraying on one side The speed of flowing water mud further increases on one side imperceptibly laminarization in the back end inside diameter portion 28y of mouth main part 24y, passes through Increase the cutting power from the material liquid injection nozzle 21y of the front end the nozzle body portion 24y cement slurry sprayed, ground can be destroyed Institutional framework, so that cement slurry is ejected into farther distance.This closes the section for the flow path divided by flow path cutting part 31y The case where counting the 40%~60% of the hollow shape sectional area that area accounts near flow path cutting part 31y is also same.Lead to as a result, Crossing further increases the cutting power of the cement slurry sprayed from the front end nozzle body portion 24y, can destroy the knot of tissue of ground Structure, so that cement slurry be made to be ejected into farther distance.Here, being also suitable following variations about the 3rd embodiment.

It should be understood that embodiment of disclosure is example and not limits in all respects.Of the invention Range is not shown by above-mentioned explanation, but is shown by the scope of the claims, and be intended to include the model with claim Enclose being had altered in equivalent meaning and range.

Hereinafter, being illustrated to variation of the invention.

(variation 1)

Variation 1 and the 1st embodiment of the invention the difference is that, in the 1st embodiment, made with front end It is upwardly formed the nozzle body portion mounting hole 23 that device 3 is caused in front end at the axis of device 3 side at right angle, makes nozzle body portion 24 It is installed on the nozzle body portion mounting hole 23, in contrast, variation 1 is to cause front end the nozzle body portion of device 3 to install Hole 23a (including airhood mounting hole 43a) is formed in a manner of downward 30 degree, and nozzle body portion 24 is installed on nozzle master Body portion mounting hole 23a (referring to Figure 20).Here, Figure 20 is the downward nozzle body for indicating to be installed on variation 1 of the invention The figure of the nozzle body portion of portion's mounting hole.Hereinafter, being concretely demonstrated.

Causing the nozzle of device 3 to be generally arranged at from front end due to front end causes the front end of device 3 slightly by the position on top, Therefore, cement slurry can not be made there are in the case where works in front of the front end that device 3 is caused in the front end being inserted into ground (curing materials liquid) is ejected near the works, but as described above, by being installed on nozzle body portion 24 with downward 30 degree The nozzle body portion mounting hole 23a (including airhood mounting hole) that is formed of mode, even if being made in the front end being inserted into ground At there are works in front of the front end of device 3, thus the case where front end can not being caused device 3 be inserted into the lower section of the works Under, it can be also ejected near works from the front inner diameter portion of nozzle body portion 24 by cement slurry (curing materials liquid), it can The induration closely sealed with works is made.In addition, making nozzle body portion mounting hole 23a with downward 30 degree in this variation 1 Mode is formed, but not limited to this, can also be formed in a manner of downward 45 degree, can also in a manner of other downward angles shape At.In addition, the front end of device 3 can not also be caused to install front end nozzle 4 in front end in variation 1, and cause to fill in front end The front end set forms nozzle body portion mounting hole, waits high-pressure injections spray in nozzle body portion mounting hole installation nozzle body portion 24 Mouth device 1.

(variation 2)

Variation 2 and the 1st embodiment of the invention the difference is that, in the 1st embodiment, made with front end It is upwardly formed the nozzle body portion mounting hole 23 that device 3 is caused in front end at the axis of device 3 side at right angle, makes nozzle body portion 24 It is installed on the nozzle body portion mounting hole 23, in contrast, variation 2 is to cause front end the nozzle body portion of device 3 to install Hole 23b (including airhood mounting hole 43b) is formed upward, and nozzle body portion 24 is installed on the nozzle body portion mounting hole 23b (referring to Figure 21).Figure 21 is the nozzle master for indicating to be installed on the upward nozzle body portion mounting hole of variation 2 of the invention The figure in body portion.

In the case where causing the air injection nozzle 22 of device 3 to spray pressure-air from front end, the high pressure of the injection is empty Gas can rise to ground internal upper part, and air layer is formed in ground.As described above, by the nozzle master formed upward Body portion mounting hole 23b installs nozzle body portion 24, sprays upwards from the material liquid injection nozzle 21 of 24 front end of nozzle body portion Cement slurry (curing materials liquid), thus, it is possible to cement slurry (curing materials liquid) is ejected into farther distance using the air layer.

(variation 3)

Variation 3 and the 1st embodiment of the invention the difference is that, in the 1st embodiment, by nozzle body The flow path cutting part 31 that the hollow shape section in the back end inside diameter portion 28 in portion 24 is divided into multiple spaces is formed as a hem width degree The cross shape that 1.5mm, length 5.5mm, depth are 5.0mm, in contrast, variation 3 are the hollow shapes in back end inside diameter portion Shape diameter of section is 10.0mm, the circular shape of diameter 3.2mm (4), circular shape that depth is 5.0mm are (referring to Figure 22 (a)).Like this by making the outside of circular shape become flow path cutting part 31a, it is capable of the flow path in the outside of enlarged rounded shape The width of cutting part 31a is capable of increasing the intensity of flow path cutting part 31a.In addition it is also possible to scheme from 22 (b) to Figure 22's (g) Shape forms flow path cutting part 31v.Figure 22 is the back end inside diameter indicated in the nozzle body extension of variation 3 of the invention The figure for the flow path cutting part that portion is formed.Here, adding up to area (32.2mm by the section of the flow path of flow path cutting part 31a segmentation²) Account for the hollow shape sectional area (78.5mm near flow path cutting part 31a²) 41.0%.

(variation 4)

Variation 4 and the 1st embodiment of the invention the difference is that, in the 1st embodiment, two skies are set Gas jet nozzle 22, and be connected to two air flow circuits 10 corresponding with each air injection nozzle 22, in contrast, variation 46 air injection nozzles 22 of setting, and two air flow circuits 10 corresponding with each air injection nozzle 22 (10a and 10b, 10b is connected to 10c, 10c and 10d, 10d and 10e, 10e and 10f, 10f and 10a).That is, front end can also be caused to device 3 Air flow circuit 10 is set as sharing the 10 (reference of air flow circuit between the circle-shaped air injection nozzle 22 being equally spaced disposed adjacent Figure 23).Like this, by sharing adjacent air flow circuit 10, the number for the air flow circuit that front end is caused in device 3 can be reduced Amount causes device 3 so as to be installed on front end to multiple air injection nozzles 22 of multi-direction injection (referring to Figure 23).? This, Figure 23 (a) is the figure for showing the installation site of high-pressure injection spray nozzle device of variation 4 of the invention, and Figure 23 (b) is this hair Cause the cross-sectional view of device installation site in the front end of the high-pressure injection spray nozzle device of bright variation 4.

(variation 5)

Variation 5 and the 1st embodiment of the invention the difference is that, in the 1st embodiment, caused in front end The position that the axial height of device 3 is different forms two (multiple) nozzle body portion mounting holes 23, relative to each nozzle master Body portion mounting hole 23 installs nozzle body portion 24, and in contrast, variation 5 is pacified using 40 plug nozzle main part of flow path closure member Hole 23 is filled, thus can not gunite and compressed air (referring to Figure 24).Here, Figure 24 is to indicate to be installed on change of the invention The figure of the flow path closure member of the nozzle body portion mounting hole 23 of shape example 5.

The flow path closure member 40 is made of nozzle body portion mounting hole closure member 41 and air flow circuit closure member 42 (referring to figure 24).The front end outer peripheral surface of nozzle body portion mounting hole closure member 41 is hexagonal shape, and outer peripheral surface is formed with outer spiral shell in its rear Line.In addition, the front end of air flow circuit closure member 42 is slightly to circumferencial direction lateral protrusions, outer peripheral surface is formed with outer spiral shell in its rear Line.Also, by making the external screw thread for the periphery for being formed in nozzle body portion mounting hole closure member 41 cause to fill with front end is formed in The internal screw thread for setting the front end inner circumferential of 3 nozzle body portion mounting hole 23 is threadedly engaged, so that nozzle body portion mounting hole is closed Part 41 is installed on front end and causes device 3.Thereby, it is possible to close the flow path of the cement slurry from cement slurry dual-purpose water flow road 9.This Outside, by making the external screw thread for the periphery for being formed in air flow circuit closure member 42 and being formed in front end the airhood of device 3 is caused to pacify The internal screw thread for filling the inner circumferential in hole 43 is threadedly engaged, and air flow circuit closure member 42 can be installed on front end and be caused device 3.As a result, can The flow path of enough air of the closing from air flow circuit 10.

Like this, by installing flow path closure member 40, energy in the flow path of the cement slurry and compressed air that do not use The installation site for being suitable for being made the nozzle body portion 24 of induration is enough selected depending on the application.

(variation 6)

Variation 6 and the 1st embodiment of the invention the difference is that, in the 1st embodiment, nozzle body portion 24 are made of nozzle body 26, the nozzle body extension 27 that can be threadedly engaged with nozzle body (26), in contrast, deformation Example 6 be make the nozzle body portion 24w of high-pressure injection spray nozzle device 1w by nozzle body 26w, with nozzle body 26w be kept completely separate and What the nozzle body extension 27w that cannot be combined was constituted.Here, Figure 25 (a) is the part P-P of Fig. 3 of variation 6 of the invention Enlarged drawing.Figure 25 (b) is the figure for showing the nozzle body portion mounting hole that device is caused in front end, and Figure 26 is to show change of the invention The figure of the constituent part of the high-pressure injection spray nozzle device of shape example 6, Figure 27 are the cross-sectional views of this composition part.Hereinafter, to nozzle master Body portion 24w is specifically described.

The forward portion of nozzle body 26w be the lesser cylindrical shape of diameter, rear portion be diameter slightly than forward portion Big cylindrical shape.In turn, it is formed with O-ring mounting recess 47 in the rear end face of nozzle body 26w (referring to Figure 27 (b)).This Outside, the cylindrical shape that the forward portion of nozzle body extension 27w diametrically increases, rear portion are that diameter is smaller than forward portion Cylindrical shape.In addition, in variation 6, nozzle body 26w and nozzle body extension 27w identical as the 1st embodiment It is shaped by the material of the high intensity such as superhard alloy.

The inside in hollow shape of nozzle body portion 24w is by back end inside diameter portion 28w, intermediate inside diameter 29w, front inner diameter Portion 30w is constituted (referring to Figure 27).The intermediate inside diameter 29w and front inner diameter portion 30w are formed in nozzle body 26w, in rear end Diameter portion 28w is formed in nozzle body extension 27w.Here, in variation 6, back end inside diameter identical as the 1st embodiment The length of portion 28w is formed as 9mm, and the length of intermediate inside diameter 29w is formed as 15mm, and the length L of front inner diameter portion 30w is formed as 8mm (referring to Fig. 7).Also, centre inside diameter 29w be formed as inner peripheral surface with 12 degree~20 degree (preferably 12 degree~15 degree, it is more excellent Be selected as 12 degree~13 degree) throttling angle beta extreme direction undergauge forward conical surface shape, front inner diameter portion 30w and intermediate inside diameter 29w's Front end connection, the diameter d for being formed as the inside of hollow shape is roughly the same with the diameter of front end of intermediate inside diameter 29w, length L Be formed as 2 times~4 times (preferably 3 times~4 times) of the diameter d of the front end of intermediate inside diameter 29w, front inner diameter portion 30w's is straight Diameter d is formed as 2mm.In addition, back end inside diameter portion 28w is connected to the rear end of intermediate inside diameter 29w, be formed as the inside of the interconnecting part Diameter it is roughly the same with the diameter of rear end of intermediate inside diameter 29w.If also, nozzle body portion 24w is installed on front end and causes Device 3 then becomes forward end and causes to highlight 7mm inside the cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) in device 3 State.Here, identical as the 1st embodiment, nozzle body portion 24w forward end causes the cement slurry dual-purpose water flow in device 3 Length outstanding in road 9 (curing materials liquid stream road) is that 9 (curing materials of cement slurry dual-purpose water flow road in device 3 are caused in front end Liquid stream road) diameter (D) half (D/2).In addition, in variation 6, nozzle body portion 24w identical as the 1st embodiment Overall length LL (32mm) be formed as 16 times of diameter d (2mm) of front end of intermediate inside diameter 29w, but not limited to this, nozzle body The overall length LL of portion 24w can also be formed as 15 times~20 times of the diameter of the front end of intermediate inside diameter 29w, in addition, that can not make In the case that the overall length LL of nozzle body portion 24w is elongated, the overall length LL of nozzle body portion 24w can also be made to be formed as intermediate internal diameter 10 times of the diameter d of the front end of portion 29w~20 times.In addition, the back end inside diameter portion 28w shape inside nozzle body extension 27w At the flow path cutting part 31w for thering is the back end inside diameter portion section 28w by hollow shape to be divided into multiple spaces.With the 1st embodiment Identical, flow path cutting part 31w is formed as the cross shape of width 1.5mm, length 5.5mm.In addition, flow path cutting part 31w The shape of variation 3 can be deformed into.

Then, about nozzle body portion 24w to be mounted on to the nozzle for being formed in the side that device upper tube 35 is caused in front end The method of main part mounting hole 23w, says the installation method difference of the nozzle body portion 24 with the 1st embodiment It is bright.Here, causing the nozzle body portion mounting hole 23w of the side of device upper tube 35 to be formed in the front end for being formed in variation 6 There is nozzle body extension retaining lugs 38 (referring to Figure 25 (b)).

(1) firstly, nozzle body extension 27w is inserted into nozzle body portion mounting hole 23w.It is formed in nozzle as a result, The cylindrical shape of the front end of body extending portion 27w is contacted with nozzle body extension retaining lugs 38, nozzle body extension 27w It is supported by nozzle body extension retaining lugs 38.

(2) then, nozzle body 26w is inserted into nozzle body portion mounting hole 23w.The rear end of nozzle body 26w as a result, With nozzle body extension 27w front end side contact, but it is inserted into the O shape of the O-ring mounting recess 47 of the rear end nozzle body 26w Ring 46 seals.

(3) then, embedding from the preceding extreme direction of nozzle body 26w with sequence identical with the erection sequence of the 1st embodiment Enter nozzle body supporting member 32 etc., the high-pressure injection spray nozzle device 1 including nozzle body portion 24w is installed on nozzle body portion peace Fill hole 23w.The nozzle body extension 27w installed in this way is identical as the 1st embodiment, is highlightedly installed to front end and causes device The substantially central portion on the cement slurry dual-purpose water flow road 9 (curing materials liquid stream road) in 3.It, can also be in addition, about variation 6 1st embodiment is similarly projected at least substantially 1/ that the cross section on cement slurry dual-purpose water flow road 9 in device 3 is caused in front end 3, in addition, being formed with multiple nozzles in the position that front end causes the axial height of device 3 different as the 1st embodiment In the case where main part mounting hole 23w, it is projected into front end and causes at least big of 9 section of cement slurry dual-purpose water flow road in device 3 Cause 1/2~substantially 2/3 (preferably substantially 2/3).

(variation 7)

Variation 7 of the invention and the 1st embodiment (also including 1~variation of variation 6) the difference is that, In 1st embodiment, the back end inside diameter portion 28 of nozzle body portion 24 is connected to the rear end of intermediate inside diameter 29, is formed as its diameter It is all roughly the same with the diameter of the rear end of the intermediate inside diameter 29, in contrast, in variation 7, after nozzle body portion 24 End inside diameter 28 be connected to the rear end of intermediate inside diameter 29, the diameter of back end inside diameter portion 28 and the interconnecting part of centre inside diameter 29 and The diameter of the rear end of the intermediate inside diameter 29 is roughly the same, the interconnecting part direction from the back end inside diameter portion 28 and intermediate inside diameter 29 The rear extreme direction in back end inside diameter portion 28 is expanding.In this case, it is also possible to angle i.e. 12 same as intermediate inside diameter Spend~20 degree (preferably 12 degree~15 degree, more preferably 12 degree~13 degree) or bigger angle i.e. 13 degree or more or 18 degree or more Mode, towards 28 rear end of back end inside diameter portion increase diameter.

Rear end diameter from the interconnecting part of back end inside diameter portion 28 and intermediate inside diameter 29 towards back end inside diameter portion 28 increases, by This more grout layers fluidisation ground enters in nozzle body portion 24, can gunite without decaying from being formed in spray The cutting power of the material liquid injection nozzle 21 of the front end of mouth main part 24, so as to make cement slurry be ejected into farther distance.

(variation 8)

Variation 8 of the invention is that above-mentioned variation 7 is applied to the shape of the 3rd embodiment, variation 8 and the 3rd Embodiment the difference is that, in the 3rd embodiment, the back end inside diameter portion 28y of nozzle body portion 24y and intermediate internal diameter The rear end of portion 29y is connected to, and the diameter for being formed as the rear end of its diameter and the intermediate inside diameter 29y is all roughly the same, with this phase Right, in variation 8, the back end inside diameter portion 28z of nozzle body portion 24z is connected to the rear end of intermediate inside diameter 29z, back end inside diameter The diameter of the rear end of the diameter and intermediate inside diameter 29z of the interconnecting part of portion 28z and intermediate inside diameter 29z is roughly the same, from this Rear extreme direction enlarged diameter (reference of the interconnecting part of back end inside diameter portion 28z and intermediate inside diameter 29z towards back end inside diameter portion 28z Figure 28~Figure 31).It in this case, can also be with same angle i.e. 12 degree~20 degree with intermediate inside diameter 29z (preferably 12~13 degree) or bigger angle i.e. 13 degree or more or 18 degree or more of mode, increase towards the back end inside diameter portion rear end 28z straight Diameter.Here, Figure 28 (a) is the enlarged drawing of the part P-P of Fig. 3 of the high-pressure injection spray nozzle device of variation 8 of the invention, Figure 28 It (b) is to indicate that the figure of the nozzle body portion mounting hole of device is caused in front end, Figure 29 is the structure for showing the high-pressure injection spray nozzle device At the figure of part, Figure 30 is the cross-sectional view for indicating this composition part, and Figure 31 is the installation side for indicating the high-pressure injection spray nozzle device The figure of method.

It like this, will be from the interconnecting part of back end inside diameter portion 28z and intermediate inside diameter 29z towards back end inside diameter portion 28z's Rear end makes diameter become larger, thus it enables that more grout layer fluidisations ground enters in nozzle body portion 24z, the water of the laminarization Mud plays stronger jet power at the forward portion of diameter undergauge, can be formed in nozzle body portion with unattenuated come from The mode gunite of the cutting power of the material liquid injection nozzle 21z of the front end of 24z, so as to which cement slurry to be ejected into Farther distance.

(variation 9)

Although in the above-described embodiment, illustrating " to be also possible to the stream divided by flow path cutting part 31 (31x, 31y) The section on road adds up to area to account for the 40%~60% of the hollow shape sectional area of flow path cutting part 31 (31x, 31y) nearby.", But not limited to this, add up to area that can also account for flow path segmentation by the section of the flow path of flow path cutting part 31 (31x, 31y) segmentation The 50%~60% of the hollow shape sectional area of portion 31 (31x, 31y) nearby.In particular, confirming makes to spray from high-pressure injection The effect is larger in the case that the injection pressure of mouth device 1 (1x, 1y) is 20MPa or more.

Description of symbols

1 high-pressure injection spray nozzle device

1w high-pressure injection spray nozzle device

1x high-pressure injection spray nozzle device

1y high-pressure injection spray nozzle device

2 injection bars

Cause device in 3 front ends

3x causes device in front end

3y causes device in front end

4 front end nozzles

5 operation machines

6 rotating rings

7 cement slurry dual-purpose water supply passageways

8 air supply passageways

9 cement slurry dual-purpose water flow roads

10 air flow circuits

The supply source of 11 water

The supply source of 12 air

The supply source of 13 cement slurries

14 water supply hoses

15 air supplying flexible pipes

16 cement slurry supplying flexible pipes

17 injection bar outer tubes

17a causes front end device outer tube

18 injection bar inner tubes

18a causes front end device inner tube

19 combine pin insertion hole

20a combination pin injects bar recess portion

Cause device recess portion in 20b combination pin front end

21 material liquid injection nozzles

22 air injection nozzles

23 nozzle body portion mounting holes

23a nozzle body portion mounting hole

23b nozzle body portion mounting hole

23w nozzle body portion mounting hole

23x nozzle body portion mounting hole

23y nozzle body portion mounting hole

24 nozzle body portions

24w nozzle body portion

24x nozzle body portion

24y nozzle body portion

25 airhoods

25x airhood

25y airhood

26 nozzle bodies

26w nozzle body

26y nozzle body

27 nozzle body extensions

27w nozzle body extension

27y nozzle body extension

27z nozzle body extension

28 back end inside diameter portions

28w back end inside diameter portion

28x back end inside diameter portion

28y back end inside diameter portion

28z back end inside diameter portion

29 intermediate inside diameters

Inside diameter among 29w

Inside diameter among 29x

Inside diameter among 29y

30 front inner diameter portions

30w front inner diameter portion

30x front inner diameter portion

30y front inner diameter portion

31 flow path cutting parts

31a flow path cutting part

31w flow path cutting part

31x flow path cutting part

31y flow path cutting part

31z flow path cutting part

32 nozzle body portion supporting members

32x nozzle body portion supporting member

32y nozzle body portion supporting member

33 notch

34 valve for pressure difference

Cause device upper tube in 35 front ends

36 combine pin

Pipe connected pipe in 37 injection bars

38 nozzle body extension retaining lugs

38x nozzle body extension retaining lugs

38y nozzle body extension retaining lugs

Cause device lower tube in 39 front ends

40 flow path closure members

41 nozzle body portion mounting hole closure members

42 air flow circuit flow path closure members

43 airhood mounting holes

43a airhood mounting hole

43b airhood mounting hole

44 injection bar protrusions

Cause device upper tube internal projection in 45 front ends

46 O-rings

46x O-ring

46y O-ring

47 O-ring mounting recess

47x O-ring mounting recess

47y O-ring mounting recess

48x nozzle body rear component.

Claims (7)

1. a kind of high-pressure injection spray nozzle device is connected to being formed in inject in the axial curing materials liquid supply pipe in bar, and It is set to the side that device is caused with the front end of the front end of injection bar connection, which is characterized in that

With the nozzle body portion for being formed as hollow shape, which includes: the intermediate inside diameter of conical surface shape, inner peripheral surface Forward extreme direction undergauge and formed；Front inner diameter portion is connected to the front end of the intermediate inside diameter, diameter and the intermediate inside diameter The diameter of front end is roughly the same；Back end inside diameter portion is connected to the rear end of the intermediate inside diameter, is formed as diameter and the intermediate internal diameter The diameter of the rear end in portion is roughly the same or extreme direction is expanding backward from the roughly the same diameter,

Being formed in the back end inside diameter portion of the nozzle body portion is divided into the flow path in multiple spaces to divide in hollow shape section Portion,

The flow path cutting part have following part: the back end inside diameter portion of the hollow shape near the flow path cutting part it is big Cause central part, have the hollow shape sectional area in the back end inside diameter portion near the flow path cutting part of being equivalent to 2%~ The part of 20% area,

In the curing materials liquid that the back end inside diameter portion of the nozzle body portion is flowed in each sky divided by the flow path cutting part Between in more imperceptibly after laminarization, the intermediate inside diameter there is no the spaces of the hollow shape of corporeal thing by undergauge simultaneously Extreme direction conveys forward, therefore the cutting power of the curing materials liquid sprayed from the front inner diameter portion of the nozzle body portion increases Greatly, curing materials liquid can be ejected into farther distance.

2. high-pressure injection spray nozzle device as described in claim 1, which is characterized in that the flow path divided by the flow path cutting part Section add up to area be the flow path cutting part near the back end inside diameter portion the hollow shape sectional area 40%~ 60%.

3. high-pressure injection spray nozzle device as described in claim 1 or 2, which is characterized in that near the flow path cutting part The hollow shape sectional area is the hollow shape sectional area next to the flow path cutting part upstream.

4. high-pressure injection spray nozzle device as described in claim 1 or 2, which is characterized in that near the flow path cutting part The hollow shape sectional area is the hollow shape sectional area next to the flow path cutting part downstream.

5. high-pressure injection spray nozzle device as described in any one of claims 1 to 4, which is characterized in that the flow path cutting part Be formed as cross shape.

6. such as high-pressure injection spray nozzle device according to any one of claims 1 to 5, which is characterized in that the nozzle body portion Back end inside diameter portion cause to be protrusively provided inside axial curing materials liquid stream road in device to the front end is formed in.

7. a kind of ground improvement device, which is characterized in that there is front end to cause device, the front end causes device installation just like power Benefit require any one of 1~6 described in high-pressure injection spray nozzle device.