CN102720461A - Grout stopping method and grout stopping device for hydraulic drill jumbo - Google Patents
Grout stopping method and grout stopping device for hydraulic drill jumbo Download PDFInfo
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- CN102720461A CN102720461A CN2012101904659A CN201210190465A CN102720461A CN 102720461 A CN102720461 A CN 102720461A CN 2012101904659 A CN2012101904659 A CN 2012101904659A CN 201210190465 A CN201210190465 A CN 201210190465A CN 102720461 A CN102720461 A CN 102720461A
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Abstract
The invention relates to the technical field of surrounding rock boring in fractured weak zones under seabed and river-crossing environments and discloses a grout stopping method and a grout stopping device for a hydraulic drill jumbo. The grout stopping method includes using the grout stopping device to stop grout. The grout stopping device comprises a pressure pipe, a pair of stop-grouting plugs, a hydraulic cylinder, a casing and a seal gasket. The stop-grouting plugs are arranged on two sides inside the casing. The stop-grouting plugs on two sides are respectively connected with a piston rod of the symmetrical hydraulic cylinder, which penetrates through the casing and is fixed outside. The pressure pipe used for axially pressing the stop-grouting pistons is disposed at one end of the casing and is connected with the casing in a threaded manner. The seal gasket and an orifice pipe are arranged at the other end of the casing and are fixedly connected with the casing through bolts. The grout stopping method and the grout stopping device are simple for grouting and convenient for remote control. Construction cost can be reduced, work efficiency can be improved, construction period can be shortened, the requirements of market on construction period and cost are met, positive social benefit and economic benefit for environment protection are achieved, and integral drilling and grouting construction by the jumbo can be achieved.
Description
[skillArt field]
The present invention relates to the seabed, cross weak broken band country rock hole creating technology field under the environment of river, relate in particular to a kind of hydraulic drill ring and end paste-making method and end sizing device.
[background technology]
At present, the B353E jumbo produced of Atlas Copco company simple to operate with it in constructing tunnel, move rapidly, rate of penetration is fast and standard, maintaining is convenient and be widely used in the method for tunnel drilling and blasting construction.But B353E jumbo major function is a blasthole drilling, the very for a short time other field that is applied in.And in construction particularly in the seabed, when crossing under the environment such as river operation: run into weak broken band country rock through regular meeting and meet water and be prone to softening, disintegration even trickling; Causing boring hole, the pore-forming difficulty of collapsing; For guaranteeing grouting consolidation effect, often adopt segmentation protrusive grouting process, but the slip casting of segmentation protrusive exists hole-bottom slurry-injection weak effect, boring repeatedly, repeatedly slip-casting, construction technology is more loaded down with trivial details, workload is big shortcoming; Can fundamentally solve this type of problem and bore the notes integrated construction; Therefore also carry out continuous exploratory development both at home and abroad, have only the multifunctional drill RPD series of Japan really to accomplish to bore the notes integrated construction at present, technology is relatively ripe.China had also proposed to bore according to the construction needs in recent years annotates integrated this notion, and a lot of units are also constantly attempting and putting into practice, but effect is not satisfactory, annotates integrated construction field China at brill and also is in blank out basically.If can be applied on the B353E chassis boring the incorporate advantage of notes, then the B353E chassis can address the above problem and not lose his original speciality well in boring the notes integrated construction.Because shortcomings such as three arm rock drilling jumbos bore " overfall " that exist in the notes integrated construction slip casting process and only starch technical barrier, and bolt and drilling rod are dismantled often in the promptly simple and easy stop grouting plug construction, and the operation conversion is frequent are only starched weak effect.
[summary of the invention]
In order to overcome the deficiency in the background technology; The present invention provides a kind of hydraulic drill ring to end paste-making method and ends sizing device; Thoroughly solve three arm rock drilling jumbos bore annotate " overfall " that exist in the integrated construction slip casting process only starch technical barrier; Improved three arm chassis and bore to have annotated integrated construction speed, shortened the construction period, have cost low, be easy to processing, workable, only starch effective.
In order to realize the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of hydraulic drill ring ends sizing device automatically; Comprise: press pipe, stop grouting plug, hydraulic jack, sleeve pipe, sealing mat; Be provided with a pair of stop grouting plug that is positioned at the drilling rod both sides in the said sleeve pipe, the stop grouting plug of both sides is connected with the piston rod of the symmetrical hydraulic jack that passes the sleeve pipe external fixation respectively; Said sleeve pipe one end is provided with the pressure pipe that is used for the axial compression stop grouting plug, presses pipe and sleeve pipe screwed connection; The sleeve pipe other end is provided with sealing mat, orifice tube, and orifice tube, sealing mat are fixedly connected with sleeve pipe through bolt.
This hydraulic drill ring ends sizing device automatically, and said pressure pipe is pressed pipe for rotation, is connected and composed by rotation platen and some handles, and the periphery wall of rotation platen is provided with the screw thread that is connected with sleeve pipe, is evenly equipped with some handles on the wall of rotation platen periphery without screw thread; Said rotation platen center is provided with the drilling rod circular hole greater than shank diameter, and the periphery in round bar hole is provided with the slurries circular hole that is uniformly distributed with.
This hydraulic drill ring ends sizing device automatically, and said sleeve pipe is outside equipped with the symmetrical support of fixed hydraulic oil cylinder, and sleeve pipe one end is provided with corresponding flange connecting plate with orifice tube; Sleeve pipe one end in addition is provided with and the screw thread of pressing pipe to be connected.
This hydraulic drill ring ends sizing device automatically, and the stop grouting plug of said both sides is combined into compacting device, and each stop grouting plug is a semicircular structure; The planar central setting of said stop grouting plug to press the depression diameter identical with drill pipe diameter, the cambered surface of said stop grouting plug is provided with the locking device of fixed hydraulic oil cylinder piston bar.
This hydraulic drill ring ends sizing device automatically, and said stop grouting plug is that resin is synthetic, and it is 50Mpa that the material maximum is born pressure.
This hydraulic drill ring ends sizing device automatically, and said orifice tube is connected and composed by body and flanged plate.
This hydraulic drill ring ends sizing device automatically, said hydraulic jack stroke be (100-50)/2mm and the stroke 20mm of fixed station and the stroke sum of surplus, the stroke of oil cylinder needs is 40-50mm.; The pressure of said hydraulic jack is: maximum pressure is 7Mpa.
A kind of hydraulic drill ring is only starched job practices automatically, and its step is following:
1, only sizing device is installed,
The flange that (1) will end on the sleeve pipe 4 of sizing device is connected with flange on the orifice tube 6; And folder one deck high pressure rubber seal washer 5 between two flange; Connect with bolt then, be used for, prevent that the slurries between orifice tube 6 and the sleeve pipe 4 from overflowing in the mortar depositing construction process;
(2), be used for the inwall of lubricated stop grouting plug at the inwall brushing lubrication oil of stop grouting plug 2;
(3) drilling rod 7 is passed with pressing the pipe 1 from stop grouting plug 2, tighten drill bit 8, will press then and manage 1 and be installed on the sleeve pipe 4 through screwed connection; Press the grid permeable hole on the pipe 1 to reserve 5～10cm length, guarantee that deslagging is unimpeded;
The orifice tube 6 that (4) will insert in the injected hole is fixed with the injected hole aperture;
2, in hole flushing, mud jacking, cleaning construction, end the execution conditions of sizing device,
(1) in boring procedure, when meeting water burst, the single hole water yield makes stop grouting plug 2 radially clamp drilling rod greater than 10m3/h through symmetrical hydraulic jack 3, presses pipe, axial compression stop grouting plug 2, shutoff orifice tube 6 water bursts through advancing;
(2) in the mud jacking construction, after slurries solidify, hold drilling rod tightly, drilling rod can't withdraw from injected hole, axially unclamps rapidly and presses pipe 1, radially unclamps the stop grouting plug 2 that clamps drilling rod through symmetrical hydraulic jack 3, and drilling rod is withdrawed from; Drilling rod withdraws from employing and can hole forward, and cutting shelves are lived the anti-teeth drill bit of obstruction in the time of also rotating backward, has avoided the stifled brill and the bit freezing of slurries, makes the drilling rod can both be free to advance or retreat under any state of boring slip casting, prevents that slurries from embracing brill;
(3) after slip casting finishes, unclamp the slip casting tube head, axially unclamp then and press pipe 5～10cm, radially unclamp the stop grouting plug 2 that clamps drilling rod, open the flushing cinder system, prepare for next section injected hole creeps into work;
3, end the construction working method of sizing device hydraulic system,
A. preparation, the hydraulic pressure oil of main system enters into hand-operated direction valve 13 through the oil inlet pipe P of system, flow control valve 9:
B. stop grouting plug 2 compresses drilling rod 7, and when hydraulic cylinder piston rod stretched out, hand-operated direction valve 13 pushed away forward; Hydraulic oil gets into reducing valve 10, and post-decompression hydraulic oil gets into hydraulic lock 12, gets into then in the hydraulic jack 3 big chambeies; Under the effect of hydraulic pressure, the piston rod of hydraulic jack 3 is stretched, and makes stop grouting plug 2 deformable seals compress drilling rod 7; Seal up the slurries of injection, forbid that slurry stream goes out outside the orifice tube;
C. simultaneously with pressing pipe 1 through putting the rotation of steel pipe on the handle, axial compression stop grouting plug 2;
D. stop grouting plug unclamps drilling rod, and when the piston rod of hydraulic jack 3 was withdrawn, hand-operated direction valve 5 was toward pulling back; Hydraulic circuit commutates, and walks to get into the loculus hydraulic circuit of hydraulic jack 3, and hydraulic oil gets into reducing valve 10; Post-decompression hydraulic oil gets into hydraulic lock 12, gets into then in hydraulic jack 3 loculuses, and the piston rod of hydraulic jack 3 is return; Stop grouting plug 2 unclamps drilling rod 7, lets drilling rod, drill bit, adapter sleeve axially move;
E. solidify when slurries, when the pressure pipe 1 that ends sizing device can't be retreated, can put steel pipe on pipe 1 handle and increase rotation torque pressing, make and press pipe 1 rotation to retreat.
Because adopt aforesaid technical scheme, the present invention has following superiority:
A kind of hydraulic drill ring ends paste-making method and ends sizing device, is to annotate integration apparatus under the situation that keeps original performance of B353E chassis and function the B353E chassis being modified into brill.A key technology difficult problem that in development, runs into " end sizing device " is launched relevant discussion and technical research, final Development and design produce cost low, be easy to process, workable hydraulic pressure aperture " ends sizing device ".Thoroughly solve three arm rock drilling jumbos bore annotate " overfall " that exist in the integrated construction slip casting process only starch technical barrier; Be that bolt is dismantled often with drilling rod in the construction of simple and easy stop grouting plug; Shortcomings such as the operation conversion is frequent, the present invention has greatly improved three arm chassis and has bored the integrated construction speed of annotating, and shortens the construction period; Practice thrift cost, reached and only starched effect.The present invention has following characteristic:
1. end sizing device and adopt hydraulic control, simple to operate, remote control is convenient.The operation hydraulic control valve unclamps stop grouting plug when boring, cleaning bottom of hole, holes; The operation hydraulic control valve compresses stop grouting plug and carries out slip casting during slip casting.
2. the stop grouting plug processing request is higher, reliable in quality, have wear-resisting, withstand voltage, corrosion resistance is strong.
3. hydraulic jack adopts with being connected of stop grouting plug and flexibly connects (not being to be fixedly connected), after oil cylinder is installed, can well be connected with hydraulic jack in the stop grouting plug insertion groove, and the step that simplifies the operation has so greatly also increased stop grouting plug activity and deformation space.
4. sleeve pipe, pressure are managed the machining accuracy height, and structural strength is strong, and process for machining and manufacturing is complicated.
5. the package unit installation and removal are convenient, assemble stop grouting plug, hydraulic jack, pressure pipe, sleeve pipe etc. earlier during installation, and integral body is docked with mounted orifice tube then, connect the control oil pipe again.When pulling down and above-mentioned steps get final product on the contrary.
The present invention is through bore annotating the boring of integrated processing, and the integrality of boring is better, does not have the hole phenomenon of collapsing and takes place, and can carry out the disposable slip casting in full hole or the slip casting of segmentation protrusive is handled once more through the aperture, guarantees slip casting effect,
The present invention is based on tunnel share chassis company successfully uses chassis to implement on the basis of rapid drilling slip casting at Jiaozhou Bay, Qingdao seabed tunnel; Further three arm rock drilling jumbo functions are excavated and are used the further expansion in field; Satisfy the requirement of market to engineering construction duration, cost; The present invention is directed to one in three arm chassis construction arm and transform, customized or introduce brand-new drilling system, solve three arm rock drilling jumbos and bore the technical barrier of annotating integrated existence; Improve three arm rock drilling jumbo capacity utilization and diversity, but make the chassis simultaneous adaptation in different geology sections and all kinds of grouting construction process.The present invention can practice thrift cost; Raising work efficiency, reduction of erection time, protection environment have extremely positive social benefit and economic benefit; Realize the brill notes integrated construction of chassis; Can also make three-arm hydraulic wagon drill a qualitative leap arranged, also certainly will create wide influence power and good economic benefit more in boring slip casting field.
[description of drawings]
Fig. 1 ends the sizing device structural representation;
Fig. 2 ends sizing device hydraulic system sketch map;
Fig. 3 ends the sizing device hydraulic system to insert the block diagram that three arm rock drilling jumbo hydraulic systems connect;
Fig. 4 annotates the integrated construction flow chart with the brill that ends sizing device;
Among the figure: 1, press pipe, 1.1, the rotation platen, 1.2, handle, 2, stop grouting plug, 2.1, press depression, 2.2, locking device; 3, hydraulic jack, 4, sleeve pipe, 4.1, support, 4.2, flanged plate, 5, seal washer, 6, orifice tube; 7, drilling rod, 8, drill bit, 9, flow control valve, 10, reducing valve, 11, pressure meter; 12, hydraulic lock, 13, hand-operated direction valve, the oil inlet pipe P of system, the low discharge oil return pipe D of system, system oil return pipe T.
[specific embodiment]
Like Fig. 1,2,3, shown in 4; A kind of hydraulic drill ring ends sizing device; Comprise: press pipe 1, stop grouting plug 2, hydraulic jack 3, sleeve pipe 4, seal washer 5 and orifice tube 6; Be provided with a pair of stop grouting plug 2 that is positioned at drilling rod 7 both sides in the said sleeve pipe 4, the stop grouting plug 2 of both sides is connected with the piston rod of the symmetrical hydraulic jack 3 that passes sleeve pipe 4 external fixation respectively; Said sleeve pipe 4 one ends are provided with the pressure pipe 1 that is used for the axial compression stop grouting plug, press pipe 1 and sleeve pipe 4 screwed connections; Sleeve pipe 4 other ends are provided with seal washer 5, orifice tube 6, and orifice tube 6, seal washer 5 are fixedly connected with sleeve pipe 4 through bolt.
Said pressure pipe 1 is pressed pipe for rotation, is connected and composed with some handles 1.2 by rotation platen 1.1, and the periphery wall of rotation platen 1.1 is provided with the screw thread that is connected with sleeve pipe 4, is evenly equipped with some handles 1.2 on the wall of rotation platen 1.1 periphery without screw threads; Said rotation platen 1.1 centers are provided with the bar hole greater than drill pipe diameter, are evenly equipped with the slurries circular hole on the rotation platen 1.1 in one week of distaff hole.Press pipe: be installed in only sizing device rearmost end, its effect is the axial compression stop grouting plug.
Said sleeve pipe 4 is outside equipped with the symmetrical support 4.1 of fixed hydraulic oil cylinder, and sleeve pipe one end is provided with and orifice tube 6 corresponding flange connecting plates 4.2; Sleeve pipe one end in addition is provided with and the screw thread of pressing pipe 1 to be connected.Sleeve pipe mainly plays fixing, connecting elements.
The stop grouting plug 2 of said both sides is combined into compacting device, and each stop grouting plug 2 is a semicircular structure; The planar central setting of said stop grouting plug 2 to press depression 2.1 diameters identical with drilling rod 7 diameters, the cambered surface of said stop grouting plug 2 is provided with the locking device 2.2 of fixed hydraulic oil cylinder piston bar.Stop grouting plug is installed in the sleeve pipe, and its effect is the slurries that seal up injection, forbids that it flows out outside the orifice tube.
Said stop grouting plug 2 is that resin is synthetic, and it is 50Mpa that the material maximum is born pressure.
Said orifice tube 6 is connected and composed by body and flanged plate.
Hydraulic drill ring ends sizing device automatically, and the stroke of said hydraulic jack 3 is greater than the stroke 20mm of (100-50)/2mm and fixed station and the stroke sum of surplus, and the stroke that oil cylinder needs is 40-50mm.; The pressure of said hydraulic jack is: maximum pressure is 7Mpa.Hydraulic jack: be installed on the sleeve pipe, link with stop grouting plug, its effect is under the effect of hydraulic pressure, to compress stop grouting plug, makes the stop grouting plug deformable seal live slurries.
The present invention ends sizing device and adopts hydraulic control, and is simple to operate, and remote control is convenient:
When boring, cleaning bottom of hole, the operation hydraulic control valve unclamps stop grouting plug, holes; The operation hydraulic control valve compresses stop grouting plug and carries out slip casting during slip casting.The stop grouting plug processing request is higher, reliable in quality, have wear-resisting, withstand voltage, corrosion resistance is strong;
Hydraulic jack adopts with being connected of stop grouting plug and flexibly connects (not being to be fixedly connected), after oil cylinder is installed, can well be connected with hydraulic jack in the stop grouting plug insertion groove, and the step that simplifies the operation has so greatly also increased stop grouting plug activity and deformation space
It is convenient that this ends the sizing device installation and removal, assembles stop grouting plug, hydraulic jack, pressure pipe, sleeve pipe etc. earlier during installation, and integral body is docked with mounted orifice tube then, connects the control oil pipe again.During dismounting and above-mentioned steps get final product on the contrary
The hydraulic jack model is confirmed
Drill pipe diameter according to confirming is 50mm, and drilling rod adapter sleeve diameter is 76mm, and bit diameter is≤100mm.The purpose of stop grouting plug is to embrace drilling rod, blocks slurries and flows out from drilling rod.Thereby in the time of can confirming the stop grouting plug sealing state in it circular diameter be exactly the diameter 50mm. of drilling rod and when drill bit need be through stop grouting plug, ending sizing device need unclamp, circular diameter is greater than the diameter of drill bit in stop grouting plug, promptly interior circular diameter must be greater than 100mm.Thereby the stroke that can confirm hydraulic jack is greater than (100-50)/2mm; Hydraulic jack only is installed to needs the fixed hydraulic oil cylinder on the sizing device, and the fixed hydraulic oil cylinder needs the designs fix platform, thereby must increase oil cylinder stroke; Need to increase oil cylinder stroke be 20mm through calculating fixed station, adds and leave certain surplus, confirms that the stroke that oil cylinder needs confirms for the 50mm. oil cylinder working-pressure: stop grouting plug is that to bear pressure be 50Mpa to resin Composite maximum; The maximum pressure that hydraulic system can provide is 25Mpa, and the hydraulic jack effect is that piston rod stretches out the extruding stop grouting plug, as long as can hold drilling rod tightly; Certain distortion is arranged; Seal up slurries and get final product, pressure does not need too big, considers that definite at last its maximum pressure of cost performance is 7Mpa.
During the slip casting of hydraulic jack extruding stop grouting plug, stop grouting plug is not allow to become flexible, then need be to hydraulic jack hydraulic circuit design hydraulic lock.System pressure is 25Mpa, and the oil cylinder maximum pressure only needs 7Mpa pressure, thereby need design reducing valve with the protection hydraulic jack to hydraulic circuit, guarantees that system pressure stablizes constantly, can obtain post-decompression steady pressure again.Other aspects need be equipped with the flexible of manual operation reversal valve control hydraulic jack, flow control valve, pressure meter, hydraulic oil pipe.
Hydraulic drill ring is only starched job practices automatically, and its step is following:
1, only sizing device is installed,
(2), be used for the inwall of lubricated stop grouting plug at the inwall brushing lubrication oil of stop grouting plug 2;
(3) drilling rod 7 is passed with pressing the pipe 1 from stop grouting plug 2, tighten drill bit 8, will press pipe 1 to be installed on the sleeve pipe 4 then, press on the pipe 1 the grid permeable hole to reserve 5～10cm length, guarantee that deslagging is unimpeded through screwed connection;
The orifice tube 6 that (4) will insert in the injected hole is fixed with the injected hole aperture;
2, in hole flushing, mud jacking, cleaning construction, the execution conditions of sizing device are ended in the aperture,
(1) in boring procedure, when meeting water burst, the single hole water yield radially clamps stop grouting plug 2 greater than 10m3/h through hydraulic jack 3, and axial advance is pressed pipe 1, shutoff aperture piping water again;
Wherein, stop grouting plug radially clamps the stretching motion that refers to through hydraulic jack and realizes stop grouting plug radially to the compressing of drilling rod, and the stop grouting plug axial compression is referred to press pipe to make to press pipe to rotate through rotation realize the stop grouting plug axial compression.
(2) in the mud jacking construction, after slurries solidify, hold drilling rod tightly, drilling rod can't withdraw from injected hole, axially unclamps rapidly and presses pipe 1, radially unclamps the stop grouting plug 2 that clamps drilling rod through symmetrical hydraulic jack 3, and drilling rod is withdrawed from; Drilling rod withdraws from employing and can hole forward, and cutting shelves are lived the anti-teeth drill bit of obstruction in the time of also rotating backward, has avoided the stifled brill and the bit freezing of slurries, makes the drilling rod can both be free to advance or retreat under any state of boring slip casting, prevents that slurries from embracing brill; As other hole string slurry takes place; Can close this string slurry hole and continue slip casting; But when frequent, can unclamp only sizing device pressure pipe, continue to creep into to next section as if generation; Guarantee that slurries solidify in wall-rock crack, also can be through slurry injection technique or carry out shutoff at intermittence through the method that the adjustment grout coordinate ratio shortens gel time;
(3) after slip casting finishes, unclamp the slip casting tube head, axially unclamp then and press pipe 5～10cm, radially unclamp the stop grouting plug 2 that clamps drilling rod, open the flushing cinder system, prepare for next section injected hole creeps into work;
3, end the construction working method of sizing device hydraulic system,
A. preparation, the hydraulic pressure oil of the oil inlet pipe P of system of main system enters into hand-operated direction valve 13 through flow control valve 9: hand-operated direction valve 13 one tunnel and reducing valve 10 UNICOMs, reducing valve 10 another roads and low discharge oil return pipe D UNICOM of system; Hand-operated direction valve 13 another roads and hydraulic lock 120 UNICOMs, hand-operated direction valve 13 oil return lines and system oil return pipe T UNICOM;
B. stop grouting plug 2 compresses drilling rod 7, needs hydraulic cylinder piston rod to stretch out, and hand-operated direction valve 13 pushes away forward; Hydraulic oil gets into reducing valve 10, and post-decompression hydraulic oil gets into hydraulic lock 12, gets into then in the hydraulic jack 3 big chambeies; Under the effect of hydraulic pressure, the piston rod of hydraulic jack 3 is stretched, and makes stop grouting plug sealing 2 distortion compress drilling rod 7; Seal up the slurries of injection, forbid that slurry stream goes out outside the orifice tube; It is the flow direction of stop grouting plug hydraulic oil when compressing;
C. simultaneously with pressing pipe 1 rotation, axial compression stop grouting plug 2 through handle;
D. stop grouting plug unclamps drilling rod, needs the piston rod withdrawal of hydraulic jack 3, and hand-operated direction valve 5 is toward pulling back; The hydraulic circuit switching-over; Hydraulic oil gets into hydraulic lock 12, gets into then in hydraulic jack 3 loculuses, and the piston rod of hydraulic jack 3 is return; Stop grouting plug 2 unclamps drilling rod 7, lets drilling rod, drill bit, adapter sleeve axially move; It is the flow direction of stop grouting plug hydraulic oil when unclamping;
E. solidify when slurries, when the pressure pipe 1 that ends sizing device can't be retreated, can put steel pipe on pipe 1 handle and increase rotation torque pressing, make and press pipe 1 rotation to retreat.
Hydraulic drill ring ends paste-making method automatically, said hydraulic jack stroke be: greater than the stroke 20mm of (100-50)/2mm and fixed station and the stroke sum of surplus, the stroke of oil cylinder needs is 40-50mm.; The pressure of said hydraulic jack is: maximum pressure is 7Mpa.
Said stop grouting plug hydraulic control system is incorporated B353E hydraulic drill ring DCS18 hydraulic system into; The oil-feed oil circuit of stop grouting plug hydraulic control system is connected into the main oil feeding line in the DCS18 hydraulic system, and the oil return circuit of stop grouting plug hydraulic control system is incorporated the main oil return circuit in the DCS18 hydraulic system into;
When 1, working, stop grouting plug hydraulic control system flow influences the DCS18 hydraulic system
Stop grouting plug hydraulic control system flow during work,
When piston rod stretches out the flow Q of (extruding stop grouting plug) stretch=(A1-A2) V stretches,
The flow Q that (unclamps stop grouting plug) when piston rod is return returns=and A1 * V returns.
According to overall dimensions D * L=50 * 80 of oil cylinder, d=30mm, can know:
No bar oil pocket effective active area A1=3.14 * (5/2) * (5/2)=19.6cm2;
Bar oil pocket effective active area A2=3.14 * (3/2) * (3/2)=7.1cm2. is arranged
Suppose that it is 3.6m/min (0.06m/s) that piston rod is return the speed of unclamping stop grouting plug,
Suppose that it is 0.2---1.2m/min (0.02m/s) that piston rod stretches out the speed of pushing stop grouting plug.
Then: Q stretches=(A1-A2) V stretch=(19.6-7.1) * 0.02 * 60 * 0.1=1.5L/min
Q returns=and A1 * V returns=19.6 * 0.06 * 60 * 0.1=7.06L/min
When 2, working, stop grouting plug hydraulic control system input power influences the DCS18 hydraulic system
Stop grouting plug hydraulic control system when work maximal input is the power of oil cylinder when bearing maximum pressure extruding stop grouting plug;
P=(p squeezes+the p back of the body) * Q stretches
(the p back of the body refers to that the loss of total pressure of hydraulic oil-returning oil circuit, native system are that its back pressure value of general underloading throttle grverning system is got 0.5MPa). be P=(p squeeze+p carry on the back A2/A1) Q=(5+0.5 * 7.1/19.6) * 106 * 0.25 * 0.001=1.3KW
3, stop grouting plug hydraulic control system theory structure influences the DCS18 hydraulic system,
Hydraulic oil shunts out laggard inbound traffics control valve from main system; After reducing flow stream; Get in the 3-position 4-way operation valve; The meta function that this 3-position 4-way operation valve is selected for use is the O type, so hydraulic fluid port is totally-enclosed during this operation valve meta. the influence to the DCS18 hydraulic system when system stops is very little;
The adjusting of system pressure size is after the reducing valve pressure regulation and change; The main effect of reducing valve is the oil liquid pressure of a certain branch road in the reduction system; Make same system that the loop of two or more different pressures can be arranged; So do not influence the pressure of main system. stop grouting plug hydraulic control system pressure also is very little to the influence of DCS18 hydraulic system, can ignore.
Construction technology:
1, construction flow chart
Bore and annotate integrated construction technology more complicated, divide different slip casting sections, in construction, need constantly creep into (or retreating) according to country rock geological conditions, plant equipment situation, slip casting, and then creep into (or retreating), slip casting again.Process chart sees for details shown in Figure 4.
2, construction sequence (is example with the slip casting of segmentation protrusive)
When (1) the T-Z-D aperture is ended sizing device casing flange dish and is connected with the orifice tube flange; Folder one deck high pressure rubber packing ring between two flange; Guaranteeing does not have slurries to overflow in the mortar depositing construction process between orifice tube and the sleeve pipe, adopts Ф 10mm plain bolt to connect then;
(2) use hexagon socket head cap screw that stop grouting plug is connected into an integral body with pressing to manage, for guaranteeing certain lubricity, at butter of inwall brushing of stop grouting plug, perhaps used oil also can;
(3) the T76 drilling rod is passed with pressing the pipe from stop grouting plug, tighten drill bit, will press pipe to be installed on the sleeve pipe then, it is long that the grid permeable hole is reserved 5～10cm, guarantees that deslagging is unimpeded;
(4) injected hole creeps into, three arm rock drilling jumbo propelling pressures, 40～60bar, and surge 190～210bar is about rotational pressure 50bar;
(5) mix slurrying liquid according to design and country rock transmission coefficient; Commonly used have light water mud, superfine cement slurry and C-S biliquid to starch; Slurry water gray scale and gel time are most important to boring the influence of notes integrated construction, and suitable grout coordinate ratio data can be confirmed through test in the scene;
(6) chassis creeps into to set depth; Hydraulic pressure is adjusted to maximum, and the push-and-pull drilling rod carries out hole flushing back and forth, if unfavorable geologies such as rock crusher or strong-weathered rock and powder fine sands; Can use blast or hydraulic pressure and blast hybrid mode to carry out hole flushing, guarantee effective diffusion of slurries;
(7) after hole flushing finishes, tighten and press pipe, the slip casting tube head is installed,, carry out the drilling rod mud jacking through the T76 drilling rod through water wind liquid conversion equipment.
(8) after slip casting finishes, unclamp the slip casting tube head and clean, guarantee to use next time.Unclamp then and press pipe 5～10cm, open the flushing cinder system, carry out next section injected hole and creep into work, repeat above-mentioned process operations then;
(9) after this hole slip casting finishes, can carry out mud jacking again according to aperture water outlet situation.Annotate integrated processing because of this aperture bores, the integrality in hole is better, does not have the hole phenomenon of collapsing and takes place, and can carry out the disposable slip casting in full hole or the slip casting of segmentation protrusive is handled once more through the aperture, guarantees slip casting effect,
(10) chassis moves arm, carries out other hole constructions.
Construction precautions
(1) bores the preceding staff of notes integrated construction and can understand the working mechanism that sizing device is ended in the aperture, guarantee skilled operation and maintenance in work progress;
(2) in construction, particularly biliquid slurry construction, the setting time that flows at pipeline except accurate calculating slurries; Also to guarantee drilling rod different rotation in construction, prevent that slurries from embracing brill, as run into this type of situation; Unclamp rapidly and press pipe, withdraw from drilling rod, and clear up;
(3) in boring procedure like water burst, the single hole water yield continues to creep into less than 2m3/h; If the water yield is at 2～5m3/h, then note the observing water quantity situation of change, and notify on-the-spot operator on duty, determine whether slip casting; If the water yield at 5～10m3/h, then stops to creep into, withdraw from drilling rod, carry out slip casting; If greater than 10m3/h, can advancing in advance, the water yield presses pipe, shutoff aperture piping water, and then decide through consultation treatment measures;
(4) carry out the slip casting field trial before the slip casting earlier, in practice of construction, in time adjust grouting parameter as the case may be through field trial, to obtain grouting consolidation effect preferably;
(5) system of mixing of slurries meets design and corresponding code requirement;
(6) after the grouting pipeline connection finishes, close slurry-inlet valve, open relief valve elder generation setting-out inspection grouting pipeline and reach the seal that ends sizing device, various connections are firmly necessary, prevent to throw off under the high pressure to hurt sb.'s feelings;
(7) in the slip casting process, as other hole string slurry taking place, can close this string slurry hole and continue slip casting; But when frequent, can unclamp only sizing device pressure pipe, continue to creep into to next section as if generation; Guarantee that slurries solidify in wall-rock crack, also can be through slurry injection technique or carry out shutoff at intermittence through the method that the adjustment grout coordinate ratio shortens gel time, but if when invalid; Can suspend this hole slip casting, analyze reason, take other measure;
(8) in the slip casting process, keep grouting pipeline unimpeded, prevent to influence because of pipeline blockage the judgement of slip casting ending standard, only each parts of sizing device, slip casting connector, pipeline should often clean up, so that reuse next time;
(9) because slurries solidify, end the rotation pressure of sizing device and manage in the time of to retreat, can on pressure pipe handle, put steel pipe and increase rotation torque.
(10) the on top of relevant operating regulation of boring, slip casting personnel forbids under the situation of not shutting down tool, carrying out any repairing, when grouting pump and pipeline inner pressure do not reduce to zero; Must not remove pipeline or unclamp pipe joint,, forbid to unclamp the pressure pipe immediately after the firm slip casting end in order to avoid the slurries ejection is hurted sb.'s feelings; Rig and grouting pump are responsible for operation by the special messenger; Without agreeing that other people must not operate, the slip casting personnel are tearing pipeline open, are wearing safety goggles when pine is pressed pipe, operation grouting pump, in case slurries are splashed into eyes;
(11) note Electrical Safety, power supply for construction adopts built on stilts the processing, and earth leakage protective device is installed;
(12) reinforcement constructor's awareness of safety is carried out job safety training before the hilllock, and the personnel of marching into the arena must take appointment with certificate, and must wear protective articless such as safety helmet, raincoat, respirator before marching into the arena;
(13) carry out on-the-spot waste discharge and environmental protection work;
(14) face should have sacurity alarm system and communication system, in case dangerous situation appears in other face, starts emergency mechanism rapidly, organizes the Field Force to withdraw;
(15) in time summarize in the work progress, the problem of finding is inquired into and in time improved, guarantee that the aperture ends the constantly perfect of sizing device, improve to bore and annotate the integrated construction technical level.
Claims (8)
1. a hydraulic drill ring ends sizing device; It is characterized in that: comprising: press pipe (1), stop grouting plug (2), hydraulic jack (3), sleeve pipe (4), seal washer (5) and orifice tube (6); Be provided with a pair of stop grouting plug (2) that is positioned at drilling rod (7) both sides in the said sleeve pipe (4), the stop grouting plug of both sides (2) is connected with the piston rod of the symmetrical hydraulic jack (3) that passes sleeve pipe (4) external fixation respectively; Said sleeve pipe (4) one ends are provided with the pressure pipe (1) that is used for the axial compression stop grouting plug, press pipe (1) and sleeve pipe (4) screwed connection; Sleeve pipe (4) other end is provided with seal washer (5), orifice tube (6), and orifice tube (6), seal washer (5) are fixedly connected with sleeve pipe (4) through bolt.
2. hydraulic drill ring according to claim 1 ends sizing device; It is characterized in that: said pressure pipe (1) is pressed pipe for rotation; Connect and compose by rotation platen (1.1) and some handles (1.2); The periphery wall of rotation platen (1.1) is provided with the screw thread that is connected with sleeve pipe (4), is evenly equipped with some handles (1.2) on the wall of rotation platen (1.1) periphery without screw thread; Said rotation platen (1.1) center is provided with the bar hole greater than drill pipe diameter, is evenly equipped with the slurries circular hole on the rotation platen (1.1) in one week of distaff hole.
3. hydraulic drill ring according to claim 1 ends sizing device, it is characterized in that: said sleeve pipe (4) is outside equipped with the symmetrical support (4.1) of fixed hydraulic oil cylinder, and sleeve pipe one end is provided with and the corresponding flange connecting plate of orifice tube (6) (4.2); Sleeve pipe one end in addition is provided with and the screw thread of pressing pipe (1) to be connected.
4. hydraulic drill ring according to claim 1 ends sizing device, it is characterized in that: the stop grouting plug of said both sides (2) is combined into compacting device, is used to seal up the slurries of injection, forbids that it flows out outside the orifice tube; Each stop grouting plug (2) is a semicircular structure; The planar central setting of said stop grouting plug (2) to press depression (2.1) diameter identical with drilling rod (7) diameter, the cambered surface of said stop grouting plug (2) is provided with the locking device (2.2) of fixed hydraulic oil cylinder piston bar.
5. hydraulic drill ring according to claim 1 ends sizing device, it is characterized in that: said stop grouting plug (2) is that resin is synthetic, and it is 50Mpa that the material maximum is born pressure.
6. hydraulic drill ring according to claim 1 ends sizing device, it is characterized in that: said orifice tube (6) is connected and composed by body and flanged plate.
7. hydraulic drill ring according to claim 1 ends sizing device; It is characterized in that: the stroke of said hydraulic jack (3) is: the stroke of oil cylinder needs is 40-50mm, i.e. being calculated as of oil cylinder stroke:＞(100-50)/2mm and the stroke 20mm of fixed station and the stroke sum of surplus; The pressure of said hydraulic jack is: maximum pressure is 7Mpa.
8. a hydraulic drill ring is only starched job practices, it is characterized in that: its step is following:
1), install to end sizing device,
The flange that (1) will end on the sleeve pipe (4) of sizing device is connected with flange on the orifice tube (6); And folder one deck high pressure rubber seal washer (5) between two flange; Connect with bolt then; Be used in the mortar depositing construction process, prevent that the slurries between orifice tube (6) and the sleeve pipe (4) from overflowing;
(2), be used for the inwall of lubricated stop grouting plug at the inwall brushing lubrication oil of stop grouting plug (2);
(3) drilling rod (7) is passed from stop grouting plug (2) and pressure pipe (1), tighten drill bit (8), will press pipe (1) to be installed on the sleeve pipe (4) then through screwed connection; Press the grid permeable hole on the pipe (1) to reserve 5～10cm length, guarantee that deslagging is unimpeded;
The orifice tube (6) that (4) will insert in the injected hole is fixed with the injected hole aperture;
2), in hole flushing, mud jacking, cleaning construction, end the execution conditions of sizing device,
(1) in boring procedure, when meeting water burst, the single hole water yield makes stop grouting plug (2) radially clamp drilling rod greater than 10m3/h through symmetrical hydraulic jack (3), presses pipe, axial compression stop grouting plug (2), shutoff orifice tube (6) water burst through advancing;
(2) in the mud jacking construction, after slurries solidify, hold drilling rod tightly, drilling rod can't withdraw from injected hole, axially unclamps rapidly and presses pipe (1), radially unclamps the stop grouting plug (2) that clamps drilling rod through symmetrical hydraulic jack (3), and drilling rod is withdrawed from; Drilling rod withdraws from employing and can hole forward, and cutting shelves are lived the anti-teeth drill bit of obstruction in the time of also rotating backward, has avoided the stifled brill and the bit freezing of slurries, makes the drilling rod can both be free to advance or retreat under any state of boring slip casting, prevents that slurries from embracing brill;
(3) after slip casting finishes, unclamp the slip casting tube head, axially unclamp then and press pipe 5～10cm, radially unclamp the stop grouting plug (2) that clamps drilling rod (7), open the flushing cinder system, prepare for next section injected hole creeps into work;
3), end the construction working method of sizing device hydraulic system,
A. preparation; The hydraulic pressure oil of main system enters into hand-operated direction valve (13) through the oil inlet pipe P of system, flow control valve (9): hand-operated direction valve (13) a tunnel and reducing valve (10) UNICOM, another road of reducing valve (10) and low discharge oil return pipe D UNICOM of system; Another road of hand-operated direction valve (13) and hydraulic lock (12) UNICOM, hand-operated direction valve (13) oil return line and system oil return pipe T UNICOM;
B. stop grouting plug (2) compresses drilling rod (7), and when the need hydraulic cylinder piston rod stretched out, hand-operated direction valve (13) pushed away forward; Hydraulic oil gets into reducing valve (10), and post-decompression hydraulic oil gets into hydraulic lock (12), gets into then in the big chamber of hydraulic jack (3); Under the effect of hydraulic pressure, the piston rod of hydraulic jack (3) is stretched, and makes stop grouting plug (2) deformable seal compress drilling rod (7); Seal up the slurries of injection, forbid that slurry stream goes out outside the orifice tube;
C. simultaneously with the rotation of pressing pipe (1), axial compression stop grouting plug (2) through handle;
D. stop grouting plug unclamps drilling rod, and when the piston rod of need hydraulic jack (3) was withdrawn, hand-operated direction valve (5) was toward pulling back; The hydraulic circuit switching-over; Hydraulic oil gets into hydraulic lock (12), gets into then in hydraulic jack (3) loculus, and the piston rod of hydraulic jack (3) is return; Stop grouting plug (2) unclamps drilling rod (7), lets drilling rod, drill bit, adapter sleeve axially move;
E. solidify when slurries, when the pressure pipe (1) that ends sizing device can't be retreated, can put steel pipe on pipe (1) handle and increase rotation torque pressing, make and press pipe (1) rotation to retreat.
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| CN201210190465.9A CN102720461B (en) | 2012-06-11 | 2012-06-11 | Grout stopping method and grout stopping device for hydraulic drill jumbo |
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| CN201210190465.9A CN102720461B (en) | 2012-06-11 | 2012-06-11 | Grout stopping method and grout stopping device for hydraulic drill jumbo |
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| CN105134127A (en) * | 2015-08-18 | 2015-12-09 | 山东大学 | Anti-collapse grouting consolidation device and using method thereof |
| CN105507840A (en) * | 2015-12-31 | 2016-04-20 | 徐州徐工基础工程机械有限公司 | Accident handling device for rotary disk drillers |
| CN108590706A (en) * | 2018-05-10 | 2018-09-28 | 中铁五局集团有限公司 | One kind being used for speciality single-track railway tunnel drifter with booms Construction Techniques of Grouting in Heavy Curtain |
| CN109458515A (en) * | 2018-12-07 | 2019-03-12 | 中车西安车辆有限公司 | A kind of airtight plugging device of sampling line and method |
| CN111852380A (en) * | 2020-08-20 | 2020-10-30 | 中铁工程装备集团有限公司 | Water burst plugging device and control method thereof |
| CN113006865A (en) * | 2021-04-21 | 2021-06-22 | 徐州中国矿大岩土工程新技术发展有限公司 | Coal mine goaf administers and backfill slurrying slip casting device that sinks |
| CN117365375A (en) * | 2023-12-01 | 2024-01-09 | 云南途腾智能装备有限公司 | High-precision regulation and control type rock drilling trolley |
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| CN105134127A (en) * | 2015-08-18 | 2015-12-09 | 山东大学 | Anti-collapse grouting consolidation device and using method thereof |
| CN105134127B (en) * | 2015-08-18 | 2017-12-12 | 山东大学 | A kind of anti-collapse grouting reinforcement device and its application method |
| CN105507840A (en) * | 2015-12-31 | 2016-04-20 | 徐州徐工基础工程机械有限公司 | Accident handling device for rotary disk drillers |
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| CN109458515B (en) * | 2018-12-07 | 2024-05-03 | 中车西安车辆有限公司 | Sampling pipeline airtight plugging device and method |
| CN111852380A (en) * | 2020-08-20 | 2020-10-30 | 中铁工程装备集团有限公司 | Water burst plugging device and control method thereof |
| CN111852380B (en) * | 2020-08-20 | 2022-03-18 | 中铁工程装备集团有限公司 | Water burst plugging device and control method thereof |
| CN113006865A (en) * | 2021-04-21 | 2021-06-22 | 徐州中国矿大岩土工程新技术发展有限公司 | Coal mine goaf administers and backfill slurrying slip casting device that sinks |
| CN113006865B (en) * | 2021-04-21 | 2021-12-31 | 徐州中国矿大岩土工程新技术发展有限公司 | Coal mine goaf administers and backfill slurrying slip casting device that sinks |
| CN117365375A (en) * | 2023-12-01 | 2024-01-09 | 云南途腾智能装备有限公司 | High-precision regulation and control type rock drilling trolley |
| CN117365375B (en) * | 2023-12-01 | 2024-04-09 | 云南途腾智能装备有限公司 | Regulation and control type rock drilling trolley |
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