CN1287064C - Soil excavating tool, swivel, connecting device and ground improving method - Google Patents
Soil excavating tool, swivel, connecting device and ground improving method Download PDFInfo
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- CN1287064C CN1287064C CNB028022556A CN02802255A CN1287064C CN 1287064 C CN1287064 C CN 1287064C CN B028022556 A CNB028022556 A CN B028022556A CN 02802255 A CN02802255 A CN 02802255A CN 1287064 C CN1287064 C CN 1287064C
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- 239000002689 soil Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims description 27
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 239000004568 cement Substances 0.000 claims abstract description 27
- 238000010276 construction Methods 0.000 claims description 21
- 230000006872 improvement Effects 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000008267 milk Substances 0.000 abstract 3
- 210000004080 milk Anatomy 0.000 abstract 3
- 235000013336 milk Nutrition 0.000 abstract 3
- 239000010802 sludge Substances 0.000 abstract 1
- 239000007924 injection Substances 0.000 description 47
- 238000002347 injection Methods 0.000 description 47
- 239000000463 material Substances 0.000 description 34
- 239000004576 sand Substances 0.000 description 14
- 238000005520 cutting process Methods 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 238000013019 agitation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000383 hazardous chemical Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- -1 aromatic series sulfone Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 244000038559 crop plants Species 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/06—Dredgers; Soil-shifting machines mechanically-driven with digging screws
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1671—Shapes helical or spiral
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
Ground improving work for soft ground that does not involve discharge of sludge containing cement milk onto the ground or causing environmental problems is realized by rotating a soil excavating tool having a leading pipe, a shaft body and a spiral vane attached to the periphery of the shaft body, the portion of the shaft body where the spiral vane is attached being thick in the central region and tapered at the opposite ends along the axial direction, the upper and lower surfaces of the spiral vane being provided with pawls, excavating the soil while spouting compressed air from the leading pipe, reversely rotating the soil excavating tool when a predetermined depth is reached, injecting cement milk from the spiral vane while stirring the soil so as to mix the soil and cement milk, thereby forming an improved body in the soil.
Description
Technical field
Soil excavating tool of the present invention, turn, linkage and ground improvement method relate to the improvement of soft foundation and the purification of contaminated land.
Background technology
As the modification method of original soft foundation, useful superhigh pressure jetting injection material also carries out stirring method and uses big machinery mechanically to spray and stirring method.
In original ground improvement method, being sprayed stirring method and carried out the auger stirring method by big machinery by superhigh pressure jetting is main body, in the superhigh pressure jetting method, under the situation of construction agitation pile, owing to be on cement paste, to add a method of using after the high pressure of 20Mpa to 40MPa the pressure that sprays from the top of nozzle to do, so have the many shortcomings of spoil disposal, and carry out the mechanical type stirring method by big machinery, exist because machinery very problem such as is restricted in the ambassador construction site.
In the superhigh pressure jetting stirring means, it is possible carrying out work by more small-sized machinery, but produces a large amount of spoil disposals, unfavorable for environment, if this spoil disposal is handled, the problem that increases high cost is arranged again.
On the other hand, undertaken in the mechanical stirring method by big machinery, construction machinery is large-scale, the restricted problem in the place that existence can be constructed, owing to need carrying and working heavy mechanical equipment is set, also there is the high problem of expense in the big place of essential structure.
Have, as the result of commecial activity, hazardous substances leaks in the earth again, and soil is contaminated also to have become problem in recent years, and the discharge that suppresses hazardous substances is important, in case there is not effective solution after ejecting.Even scatter to decompose and in and the medicament of hazardous substances, its effect also is only limited to the soil on surface, handles that the depths is difficult in the ground, if excavate out with mechanical mode, expensive expense to dig hazardous substances in the ground on the ground.
In order to strengthen soft foundation, the superhigh pressure jetting stirring means is strong method, and the environmental problem that is caused by the spoil disposal that produces or the disposal cost problem of generation were narrated.As the favourable technology that addresses the above problem, in openly speciallyying permit " the mechanical agitation air-cement paste mixing force feed method and the device " of communique for TOHKEMY 2001-159130 number, put down in writing following technology: with compressor force feed air, top ends ejection air from cut drill tunnels ground with cut drill on one side on one side, the soil and the cement paste that excavate with slush pump force feed cement paste and stirring after boring is over cause pile.According to this technology, owing to stir soil and the cement that cuts fully and form pile.So, spoil disposal is not discharged on the ground, do not cause environmental problem, and can cheapness implement soil reinforcement engineering easily.The present invention is and openly speciallys permit the invention that the invention put down in writing in the communique is associated for TOHKEMY 2001-159130 number, the soil excavating tool that developed this invention be provided, turn, linkage and ground improvement method, its purpose is to solve follows caused environmental problem of spoil disposal that original method produces and the big cost issues that is caused by large-scale equipment.
Summary of the invention
Soil excavating tool of the present invention is the soil excavating tool that has guiding tube, axis body and be installed in the spiral blade on every side of axis body, the part of spiral blade is installed on above-mentioned axis body makes the little shape of the big both ends of central portion diameter diameter.On above-mentioned spiral blade and below pawl is set, can more effectively carry out the stirring of soil.In addition, make above-mentioned pawl tabular, be arranged on the tangent direction of the circumference that with the axis body is the center on, can successfully stir, have again, it is tabular that above-mentioned pawl is made rectangle, the angle of the direct of travel side when the top pawl of spiral blade, rotation when advancing downwards is cut, the following pawl of spiral blade, the angle of the direct of travel side during rotation when upwards advancing is cut, can more successfully carry out the stirring of soil and the advance and retreat of spiral blade by pawl.
Of the present invention turning is to rotate the parts of freely supporting soil excavating tool, air introducing port and injection material introducing port are set on non-rotating, with respect to non-rotating rotation axis of rotation is set freely, early stage, axis of rotation was the double pipe that is made of interior pipe and outer tube, in any one party of the inner hollow bulb of pipe and air introducing port or injection material introducing port can being connected by the mode of fluid, the opposing party of the space between interior pipe and the outer tube and air introducing port or injection material introducing port is being connected by the mode of fluid.
To achieve the above object, linkage of the present invention, it is the linkage of the axis of rotation of construction implement, as having the path that fluid can be connected by ground between the space between pipe between the pipe in each of the above-mentioned axis of rotation of double pipe and in each and the outer tube, and be provided with the counterrotating rotation that prevents between the axis of rotation and prevent locking mechanism.
And construction implement of the present invention is turned above-mentioned soil excavating tool and linkage is installed on the operation chassis with above-mentioned, makes the soil excavating tool rotation by linkage.
In addition, ground improvement method of the present invention, it is characterized in that, make the soil excavating tool rotation, spraying the compressed-air actuated soil that excavates simultaneously by guiding tube simultaneously, soil excavating tool is reversed, when stirring soil, inject cement paste from the spiral blade root, soil is mixed with cement paste, in soil, cause modified body, above-mentioned soil excavating tool has guiding tube, axis body and the spiral blade on every side that is arranged on axis body, the part of on the above-mentioned axis body spiral blade being installed is made the little shape of the big both ends of central portion diameter diameter vertically, the ring of above-mentioned spiral blade is made from the top to the central portion enlarged-diameter, again the shape that diminishes again of diameter upwards.On above-mentioned spiral blade and below be provided for stirring a plurality of pawls of soil.
Use the medicament that purifies the pollutant in the soil to replace cement paste as injection material, can realize method of soil decontamination.
Description of drawings
Fig. 1 is the stereogram of soil excavating tool of the present invention.
Fig. 2 is the elevation of soil excavating tool of the present invention.
Fig. 3 is the vertical view of soil excavating tool of the present invention.
Fig. 4 is the stereogram of the pawl of soil excavating tool.
Fig. 5 is a sectional drawing of turning of the present invention.
Fig. 6 is the injection material of expression in turning and the sectional drawing of the flow direction of air.
Fig. 7 is the injection material of expression in turning and the sectional drawing of the flow direction of air.
Fig. 8 is the sectional drawing of the detailed construction of expression linkage.
Fig. 9 is the elevation of expression construction implement of the present invention.
Figure 10 is the expanded view of the configuration example of the pawl on the expression spiral blade.
Figure 11 is the expanded view of another configuration example of the pawl on the expression spiral blade.
The specific embodiment
In order to represent the present invention to be described with reference to the accompanying drawings in more detail.Fig. 1 is the stereogram of an example of expression soil excavating tool of the present invention, and Fig. 2 is its elevation, and Fig. 3 is its vertical view.Soil excavating tool 1 of the present invention is the excavating tools that has spiral blade around axis body.Have guiding tube 2 on the top and be provided with cutting tip 3.In by cutting tip 3 cutting grounds, guiding tube 2 enters in the ground.Connect guiding tube 2 ground axis body 4 is set, spiral blade 5 is set around it.Axis body 4 is a hollow, but as shown in Figure 2, and the part that spiral blade 5 is set is made vertically the big and little shape of both ends diameter of central portion diameter.At this, as shown in Figure 2, become the shape that connects circular cone in the both sides of cylinder, become big from both ends to the central portion diameter.And, even from comprising the global shape of spiral blade 5, also be to become big as a whole from both ends to the central portion diameter.In order not produce spoil disposal, the maximum gauge of spiral blade 5 is preferably more than the 400mm, in order to make equipment scale not too greatly preferably below the 2000mm.In the present embodiment, the maximum gauge of spiral blade 5 is 1000mm.The length of axis body 4 is about 800mm in addition, and about 160mm of middle body is fixing rugosity.Up and down approximately in the scope of 320mm, the diameter of axle changes with certain proportion to about 400mm from about 140mm, and its cone angle is about 22 °.As described later, the cone angle of axis body 4 has the useful function of successfully rearward sending soil when spiral blade 5 is advanced in ground, in order to give full play to such function, be preferably made about 22 °.The pitch of spiral blade 5 is to circle to the 160mm that axially whenever advances, and changes for 5 weeks along the length of axis body 4.At axis body 4 is in the scope of taper, and the outer radial central portion of spiral blade 5 becomes big with certain proportion.On the other hand, the rugosity of axis body 4 is in certain scope, and the external diameter of spiral blade 5 also becomes necessarily.In the present embodiment, spiral blade 5 has changeed a complete week at external diameter under for maximum state, if from bottom view, owing to form circularly completely, axle is not partial to straight the advancing in ground when driving.
A plurality of rectangular tabular pawls 6 are installed respectively on the top and bottom of spiral blade 5.Pawl 6 is arranged on and be that promptly the thickness of slab direction of pawl 6 is a radial direction on the tangent direction of the circumference at center with axis body 4, owing to be installed on this direction, so be difficult to cause the generation of spoil disposal.An angle chamfering in the rectangular shape of pawl 6.This chamfering can scale off with bundle of lines angle, also can round.The angle of this chamfering the direction of rotation of spiral blade 5.In the present embodiment, the counter rotation during driving in Fig. 3, the top pawl 6b that is arranged on spiral blade 5 with chamfering towards installing towards this direction of rotation one side.On the contrary, when on when drawing soil excavating tool 1, to the clockwise direction rotation, the following pawl 6a that is arranged on spiral blade 5 with chamfering towards installing towards this clockwise direction one side.Owing to make such direction, the following pawl 6a that is arranged on spiral blade 5 during driving is when eating into soil tartly, stir soil effectively, in addition, superincumbent pawl 6b is set successfully is sent to the rear to the soil that is cut and stirs, also be difficult to engaging-in even be mixed with the stone of fist size.On the contrary, on when drawing, the pawl 6b that are arranged on above the spiral blade 5 cut and stir soil effectively, are arranged on following pawl 6a and successfully rearward send soil.
Figure 10 represents the configuration example of the pawl 6 on the spiral blade 5.In the present embodiment, the maximum gauge of spiral blade 5 is 1000mm, and the length of pawl 6 is 60mm, highly is 50mm, and thickness is 9mm, and chamfering is C10.Pawl is provided with in sequence according to the anglec of rotation that with the axle is the center as shown in figure 10.Near the periphery of spiral blade 5, a week was divided six fens, a pawl is installed, on the position of equal angular, a pawl is installed also near axis body for promptly per 60 °.And, near periphery,,, a pawl is installed also on 30 ° the angle promptly in per 1/12nd weeks from the angle of pawl is arranged, the position of the radial direction of this pawl is formerly near the centre of 2 pawls.That is, a pawl and two pawls alternately are configured to zigzag every 30 °.Have again, near the part of the narrow width the top and bottom of spiral blade 5, pawl of configuration that also can be continuous, even in this case, the position of radial direction preferably can alternately change.Spiral blade 5 top and following all be same configuration.Therefore, forming roughly cone shape shape by near the pawl 6 that is configured in peripheral with the cutting tip 3 that is arranged on the guide tube part near the lower end of spiral blade 5, soil can be as drill bit, cut effectively, and soil can be stirred effectively by the pawl that is configured to sawtooth pattern.Figure 11 is illustrated in the configuration example of the pawl 6 on the spiral blade 5 of maximum gauge 1500mm.This situation also by being configured with the roughly the same order of the situation of 1000mm diameter, near the periphery of spiral blade 5 and near the axis body, in the angle of mounting jaw, also disposes 1 pawl between these 2 pawls.And on the angle of 30 ° of skews, also zigzag ground disposes 2 pawls between these 3 pawls.
Below, represent an example of turning of the present invention with Fig. 5.Turn 9 top is non-rotating part 10, is not rotated.On non-rotating 10, injection material introducing port 11 and air introducing port 12 are arranged on the side.By bearing 13 rotations axis of rotation 14 is installed freely with respect to non-rotating 10.The double pipe structure that pipe 15 and outer tube 16 constituted in axis of rotation 14 was served as reasons.Interior pipe 15 is a hollow, and this hollow bulb constitutes injection material path 17.Injection material path 17 can be by the injection material that imports from injection material introducing port 11.Between interior pipe 15 and outer tube 16 gap is set, this gap constitutes air flue 18.Air flue 18 can be by the air that imports from air introducing port 12.
Fig. 7 and Fig. 8 represent an example of linkage of the present invention.Linkage is combined by male hookup 19 and female hookup 20.Intermediate bar 22 is to connect above-mentionedly to turn 9 and the member of soil excavating tool 1, the male hookup 19 of welding on an end of this intermediate bar, the female hookup 20 of welding on the other end.Therefore, by the combination of male hookup 19 and female hookup 20,2 intermediate bars are coupled.At this, the part of the outer wall of the part of the inwall of male hookup 19 and female hookup 20, section is the quadrangle shape, this quadrilateral surface is in contact with one another as bonding surface.That is, this bonding surface is combined into male hookup 19 and female hookup 20 mutually and does not rotate, and plays the anti-locking mechanism of rotation.In addition, male hookup 19 and female hookup 20 make it not produce axial deviation by 4 bolt.
Female hookup 20 and intermediate bar 22 are constructed with the axis of rotation 14 the same double pipes of serving as reasons interior pipe and outer tube formation of turning.Turn 9 and the end of soil excavating tool 1 on the male hookup or the female hookup of same structure also are set, can be connected with intermediate bar 22.Have again, in the present embodiment, the male hookup 19a that is arranged on 9 the bottom of turning be arranged on intermediate bar 22 on male hookup 19b in that some is different in shape, but snap portions is common, the female hookup of intermediate bar 22 can connect same as before.In order to resist the generation of spoil disposal, the diameter of intermediate bar 22 is preferably in the scope of 60～250mm.Be about 140mm in the present embodiment.The length of intermediate bar 22 determines behind the height of equipment when considering efficiency of operation and construction, if having multiple length such as 6m, 4m, 2m, just becomes the high system of applicability that can adapt to various execution conditions.
Fig. 9 represents an example of construction implement of the present invention.Operation chassis 23 has crawler belt 24 and can walk automatically, building-site mobile device all easily.On operation chassis 23, guide pillar 26 is installed by arm 25 moving up and down.Guide pillar 26 is guide tracked erecting devices of chuck for installing 27 up or down.If the mobile operating chassis 23 at the construction field (site), the angle that can adjust arm 25 vertically erects guide pillar 26, and the intermediate bar that makes epimere is clamped intermediate bar by chuck 27 with chuck 27.The upper end of the intermediate bar of epimere connects turns 9, and the lower end of the intermediate bar of hypomere connects soil excavating tool 1.Chuck 27 can be at positive and negative both direction rotation intermediate bar 22 by hydraulic-driven.That is, intermediate bar 22 plays the effect that the rotation of chuck 27 is delivered to the driving shaft on the soil excavating tool 1 on top.Injection material pipe 28 and air hose 29 are connected to turns on 9, and each pipe is connected respectively on the not shown slush pump and compressor that belong to plant equipment.Turn 9, intermediate bar 22 and soil excavating tool 1 be respectively the double pipe structure, be connected to by above-mentioned bindiny mechanism on the path of air and injection material.
When by soil excavating tool 1 driving, air is sent and sprayed with compressor from the top of soil excavating tool 1, meanwhile, the spiral blade of soil excavating tool 1 is rotated it is advanced downwards.Tunnel to a certain degree, spreading intermediate bar 22 can carry out darker driving.Because the top pawl 6a cutting direct of travel side of spiral blade, so, even be mixed with the soil of stone, also can successfully be sent to the rear to sandy soil.For the sandy soil that cut successfully are sent to the rear, spiral blade enlarges gradually from the top to the central portion diameter, diminishes again to upper diameter.At this, spiral blade is big, and is favourable to brute force pushing sandy soil, but spiral blade in ground, resisted, particularly opposing becomes big on the big part of the diameter of the spiral of central portion.When rugosity one timing of axis body, the blade of central portion becomes the shape of protruding very much, is subjected to bigger power, and meanwhile, blade is damaged easily.In addition, the power that is added on the axis body also becomes greatly, and axis body is damaged easily.On soil excavating tool 1 of the present invention, the part of the installation blade 5 on the above-mentioned axis body 4 big both ends of central portion diameter diameter vertically diminishes.For this reason, even at central portion, spiral blade and axis body are also very firm owing to rearward send sand while tunneling, so in construction soil excavating tool 1 low susceptivility to breakage in the ground, even also can construct in the place of harder ground or clay matter.
If the ultimate depth of driving reverses the direction of rotation of chuck 27, the rotary relix blade rotates up it and advances, and draws soil excavating tool 1 on simultaneously.At this moment, import injection materials, injection material is injected ground by the injection material outlet opening of soil excavating tool 1 by ascending pipe 28.On when drawing the top pawl of spiral blade stir sand.Because the following pawl of spiral blade cuts the direct of travel side when despining, so can successfully rearward send sand equally.And, in construction implement of the present invention and method of work, the stirring of the mechanical agitation of sand and the sand that caused by the ejection of injection material is carried out simultaneously, and after sand that cuts and injection material mixed fully, the sand that cuts was not discharged on the ground as spoil disposal.On when drawing, opposite during with driving, intermediate bar carries out operation while take out in turn.When on stop the injection of injection material when moving the height of regulation to, on draw soil excavating tool 1.After doing like this, when the construction in a hole is over, operation chassis 23 is moved on the next position, carry out same construction repeatedly.
In construction, because spreading intermediate bar 22 during driving, on take off intermediate bar 22 when drawing, usually be suppressed to very low degree so be exposed to ground part, owing to do not need to enlarge anti-down support, so be easy to simultaneously in construction, can be in narrow and small place or the more weak place construction of ground.Above-mentioned linkage becomes easily the loading and unloading of intermediate bar, and the supply of air and injection material also can successfully be carried out.In addition, in the present invention, because no matter during at driving, still when last drawing, all to carry out mechanical agitation energetically, so no matter during to positive and negative which direction rotation, all need the connection of intermediate bar 22 that to get loose, owing on linkage, be provided with the anti-locking mechanism of rotation, so the junction can not come off because of getting loose.
The following describes the example that the present invention is used for the foundation improvement engineering.Use the cement paste of high concentration as injection material.The cement paste of Shi Yonging in the method, for the intensity that makes modified body is enough high, the original method of ratio that preferably makes cement is (for example for 1m
3Stirring after injection material, cement amount is about 760Kg) big.At this, because the proportion of injection material becomes greatly and the force feed variation of pump when cement amount is big, so the water reducing agent that fits best is a main component with aromatic series sulfone and special sex change lignin.Because the cooperation of this water reducing agent, cement paste become to flow easily and be easy to and carried by pump, the intensity of modified body increases simultaneously.In the present embodiment, use with aromatic series sulfone and special sex change lignin as the commodity of main component mountain sieve husband (サ Application Off ロ) by name-SW-2000S (Jujo Paper Co., Ltd), with respect to the 1m after stirring as water reducing agent
3Injection material, cooperate cement 1000Kg and sieve Shan Fu (サ Application Off ロ)-SW-2000S 5Kg, obtain the compressive strength (design basis intensity) of the modified body of 1Mpa.The cement paste that useful plant equipment handle mixes with air sprays the method for cement paste under method that sprays under the low pressure of 0.6～2.5Mpa and the super-pressure at 18.0～29.0Mpa.Under the latter's super-pressure ejection condition of stirring, air and cement paste do not mix ground to be carried respectively, and air is sprayed downwards by the guiding tube top when driving, cement paste when last drawing by the horizontal injection material outlet opening 7 of spiral blade to horizontal ejection.No matter in any method, because the sand that cut mixes with cement paste, formation is not discharged on the ground so be not used as spoil disposal as the pile of modified body.On when drawing because the clockwise direction rotation of spiral blade in Fig. 3, from top importing sand, simultaneously by blade sand that stirs and mix and the powerful downwards pushing of cement, so can form firm pile, and powerful the generation that suppresses spoil disposal.For this reason, can be because of spoil disposal does not cause environmental problem, in addition owing to do not produce the expense that is used for the great number that spoil disposal handles yet, so become earth environment harmless, the method that application property, economy and safety are outstanding.
Have again, under super-pressure ejection condition of stirring, because to horizontal high-pressure injection cement paste, so can cause the modified body more wider than the diameter of spiral blade, can realize the shortening of duration and the raising of economy, simultaneously, closely the mutual construction of construction or modified body becomes and may and can seek the integrated of engineering integral body.For example, at the spiral blade that uses diameter 1m and carry out can causing the modified body of diameter 1.6～1.8mm under the superhigh pressure jetting condition of stirring, and in such scope, the intensity of modified body is very high.Under the situation of using diameter 1.5m spiral blade, can cause the modified body of diameter 2.6m left and right sides scope.In the present embodiment, use the spiral blade of diameter 1m, the rotary speed of spiral blade is that per second 0.467 changes, and the ejection pressure of injection material is 18～22MPa, and the air discharge rate is 1.5～3.0m
3/ min, the air discharge pressure is 0.6～0.7MPa.Must be noted that the injection rate of unit interval, when carrying out excessive injection, can not give play to the so-called effect of the present invention that spoil disposal does not take place sometimes.Be preferably in after the injection rate of the unit interval of grasping the limit that spoil disposal does not take place in advance, inject, just can prevent spoil disposal reliably with about 70% of limit injection rate.In the present embodiment, injection rate is 70 liters/minute.For C＜0.01N/mm
2The cohesive soil of (=MPa), last pulling rate degree (below, use and draw 1 meter required time representation) 3.0min/m; For 0.01N/mm
2≤ C≤0.03N/mm
2The soil property of (5≤N≤10), last pulling rate degree 5.0min/m; For the sand soil of 10≤N≤15, last pulling rate degree 6.0min/m.In addition, as slush pump, use the pump of 70～150 liters/min ability, the diameter that can correspondence use with the injection rate about 140 liters/min is the spiral blade of 1.5m.
On the other hand, under the situation of low pressure ejection, the internal diameter of injection material injection nozzle 7 is made 8～12mm, and the rotary speed of spiral blade is that per second 0.467 changes, and the injection material discharge pressure is 0.6～2.5MPa, and injection rate is 50 liters/min.
Next, the example that the present invention is used for the soil sanitation engineering is described.In the present embodiment, as injection material, use the medicament of the pollutant in decomposition and the sweetening of the soil.After tunneling taking-up pollution necessary depth, reverse soil excavating tool 1, in last drawing, medicament is injected soil.The sand marginal not is mechanically stirred with spiral blade 6 in the limit, and to go into the method for medicament be effective.Even advance under the situation of polluting dark place, so long as the scope that soil excavating tool 1 arrives just can be removed pollution.Have again, because spoil disposal does not take place in the present embodiment, so contaminated sand does not appear on the face of land, can construct safely.The same with embodiment 1, stir if carry out the super-pressure ejection, just can use a spot of operation, constructing in the scope widely.
According to the present invention, the excavation of spoil disposal ground can not occur and stir sand, can protect the surrounding enviroment of job site.Stir sand in the ground smoothly and effectively, and be difficult to by breakage in the ground.No matter in foundation improvement or in the purification of contaminated soil, can not need large-scale equipment, can effectively construct with short duration and a spot of expense.
Claims (6)
1. soil excavating tool, have spray compressed-air actuated guiding tube, axis body from the top and be arranged on this axis body around spiral blade, it is characterized in that, the part that spiral blade is installed on the above-mentioned axis body is made vertically the big and little shape of both ends diameter of central portion diameter, the periphery of above-mentioned spiral blade is made from top ends to the central portion enlarged-diameter, the shape that diminishes again to upper diameter again from this central portion.
2. soil excavating tool as claimed in claim 1 is characterized in that, on above-mentioned spiral blade and below on be provided for stirring a plurality of pawls of soil.
3. soil excavating tool as claimed in claim 2 is characterized in that above-mentioned pawl is tabular, be arranged on the tangent direction of the circumference that with the axis body is the center on.
4. soil excavating tool as claimed in claim 3 is characterized in that, above-mentioned pawl is that rectangle is tabular, cut one jiao respectively of top each pawl of spiral blade, the angle of the direct of travel side when this angle is the rotation of spiral blade when advancing downwards; The angle of the direct of travel side when cut one jiao respectively of following each pawl of spiral blade, this angle are the rotation of spiral blade when upwards advancing.
5. one kind is used for the civil construction machinery that soil excavates, it is characterized in that, this machinery is by the operation chassis, turn, soil excavating tool, jackshaft and linkage constitute, wherein, above-mentioned turning is provided with non-rotating and the axis of rotation that rotates freely with respect to non-rotating portion, non-rotating is provided with air introducing port and injectant introducing port, above-mentioned axis of rotation is the double pipe that is made of interior pipe and outer tube, the inner hollow bulb of interior pipe is connected with the either party of air introducing port or injectant introducing port in the mode that can pass through fluid, and the space between interior pipe and the outer tube is being connected with the opposing party of air introducing port or injectant introducing port by the mode of fluid; Above-mentioned soil excavating tool is the soil excavating tool that has guiding tube, axis body and be installed in the spiral blade on every side of axis body, the part of on the above-mentioned axis body spiral blade being installed is made the little shape of the big both ends of central portion diameter diameter vertically, the periphery of above-mentioned spiral blade is the shape that diminishes again to upper diameter again to the central portion enlarged-diameter, from this central portion from top ends, on above-mentioned spiral blade and below be provided for stirring a plurality of pawls of soil, air outlet is arranged on guiding tube, the injectant outlet opening is arranged on spiral blade; Above-mentioned jackshaft is by the double pipe that constitutes with above-mentioned the turn interior pipe that is connected with soil excavating tool and outer tube; Above-mentioned linkage has can connecting the path as each space between pipe in each of the axis of rotation of double pipe and interior pipe and the outer tube by the mode of fluid, and is provided with and prevents the anti-locking mechanism of counterrotating rotation between the axis of rotation.
6. soil improvement method, it is characterized in that, make the soil excavating tool rotation, spraying the compressed-air actuated soil that excavates simultaneously by guiding tube simultaneously, soil excavating tool is reversed, when stirring soil, inject cement paste, soil is mixed with cement paste, in soil, cause modified body from spiral blade portion; Wherein, above-mentioned soil excavating tool has guiding tube, axis body and is arranged on the spiral blade on every side of axis body, the part that spiral blade is installed on the above-mentioned axis body is made vertically the big and little shape of both ends diameter of central portion diameter, the periphery of above-mentioned spiral blade is made from top ends to the central portion enlarged-diameter, the shape that diminishes again to upper diameter again from this central portion, on above-mentioned spiral blade and below be provided for stirring a plurality of pawls of soil.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP213012/01 | 2001-07-13 | ||
| JP2001213012 | 2001-07-13 | ||
| JP213012/2001 | 2001-07-13 | ||
| JP2001365491A JP3391781B2 (en) | 2001-07-13 | 2001-11-30 | Soil excavation tool, civil engineering machine for soil excavation, and soil improvement method |
| JP365491/2001 | 2001-11-30 | ||
| JP365491/01 | 2001-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1531622A CN1531622A (en) | 2004-09-22 |
| CN1287064C true CN1287064C (en) | 2006-11-29 |
Family
ID=26618651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028022556A Expired - Fee Related CN1287064C (en) | 2001-07-13 | 2002-07-12 | Soil excavating tool, swivel, connecting device and ground improving method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3391781B2 (en) |
| KR (1) | KR100528682B1 (en) |
| CN (1) | CN1287064C (en) |
| WO (1) | WO2003006785A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3974937B2 (en) * | 2002-06-21 | 2007-09-12 | 山伸工業株式会社 | Ground improvement method |
| JP4695734B2 (en) * | 2006-02-06 | 2011-06-08 | 山伸工業株式会社 | Soil excavation tool and soil improvement method |
| JP5068678B2 (en) * | 2008-02-05 | 2012-11-07 | 伸一 山下 | Earth retaining method and excavation member for earth retaining member standing construction used therefor |
| JP5284168B2 (en) * | 2009-04-03 | 2013-09-11 | 伸一 山下 | Excavation member for earth retaining member construction and earth retaining member construction method |
| IT1401219B1 (en) * | 2010-07-15 | 2013-07-12 | Trevi Spa | HEAD OF INJECTION TO INJECT PRESSURIZED FLUID CONSOLIDATING MIXTURES IN THE GROUND. |
| JP5840891B2 (en) * | 2011-08-10 | 2016-01-06 | 大地 山下 | Removal method of retaining members |
| JP6245543B2 (en) * | 2013-10-21 | 2017-12-13 | 大地 山下 | Soil improvement body construction method |
| KR102064730B1 (en) * | 2019-03-14 | 2020-02-11 | (주)대한건설이엔지 | Automatic horizontal compaction apparatus for sandy grounds around the joint and the sewer drilling perimeter, Horizontal compaction method using the same |
| CN111318559A (en) * | 2020-03-30 | 2020-06-23 | 四川曙安建设工程有限公司 | Soil remediation gas injection equipment for soil treatment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6158253U (en) * | 1984-09-14 | 1986-04-19 | ||
| JPS61188691U (en) * | 1985-05-17 | 1986-11-25 | ||
| JP2000017649A (en) * | 1998-06-30 | 2000-01-18 | Nit Co Ltd | Soil improvement method |
| JP3687027B2 (en) * | 1998-07-23 | 2005-08-24 | 大和基工株式会社 | Joint device for extending excavation work rods |
| JP2001159130A (en) * | 1999-12-01 | 2001-06-12 | Yamashin Kogyo Kk | Mechanical-agitation air cement-milk mixing force- feeding method and device |
-
2001
- 2001-11-30 JP JP2001365491A patent/JP3391781B2/en not_active Expired - Fee Related
-
2002
- 2002-07-12 CN CNB028022556A patent/CN1287064C/en not_active Expired - Fee Related
- 2002-07-12 WO PCT/JP2002/007138 patent/WO2003006785A1/en active IP Right Grant
- 2002-07-12 KR KR10-2003-7007041A patent/KR100528682B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JP3391781B2 (en) | 2003-03-31 |
| WO2003006785A1 (en) | 2003-01-23 |
| KR100528682B1 (en) | 2005-11-15 |
| KR20040007416A (en) | 2004-01-24 |
| JP2003090189A (en) | 2003-03-28 |
| CN1531622A (en) | 2004-09-22 |
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| Date | Code | Title | Description |
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| ASS | Succession or assignment of patent right |
Owner name: SISON BUILDING CO., LTD. Free format text: FORMER OWNER: BE SACAWA CIVIL ENGINEERING INDUSTRIAL LTD.; SISON BUILDING CO., LTD. Effective date: 20050527 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20050527 Address after: Japan Kochi Applicant after: Yamashin Kougyou Co., Ltd. Co-applicant after: Nishimatsu Construction Co., Ltd. Address before: Japan Kochi Applicant before: Yamashin Kougyou Co., Ltd. Co-applicant before: Sacaba civil Industrial Co Ltd Co-applicant before: Nishimatsu Construction Co., Ltd. |
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Effective date of registration: 20160615 Address after: Japan Kochi Patentee after: The earth below the mountain Address before: Japan Kochi Patentee before: Yamashin Kougyou Co., Ltd. Patentee before: Nishimatsu Construction Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061129 Termination date: 20200712 |