CN103790152B - Pressure controllable in ground and without mud emission high pressure jet grouting system and construction method - Google Patents
Pressure controllable in ground and without mud emission high pressure jet grouting system and construction method Download PDFInfo
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- CN103790152B CN103790152B CN201410023170.1A CN201410023170A CN103790152B CN 103790152 B CN103790152 B CN 103790152B CN 201410023170 A CN201410023170 A CN 201410023170A CN 103790152 B CN103790152 B CN 103790152B
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- 239000004568 cement Substances 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000000429 assembly Methods 0.000 claims abstract description 25
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 93
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- 238000001514 detection method Methods 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 13
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- 239000008107 starch Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
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- 238000004064 recycling Methods 0.000 claims description 2
- 230000002463 transducing effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 17
- 239000011440 grout Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
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- 238000006297 dehydration reaction Methods 0.000 description 1
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- 230000001066 destructive effect Effects 0.000 description 1
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- 238000009429 electrical wiring Methods 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides pressure controllable in a kind of ground and without the high pressure jet grouting system of mud emission and construction method, high pressure jet grouting system comprises: high pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component, churning plasma discharge assembly, plasma discharge processing components and monitor component.High pressure jet grouting construction method comprises: assembling churning plasma discharge assembly also location is transferred; Air deflector is installed and is connected with churning plasma discharge element turns; The above each assembly of assembling is also connected with air deflector respectively; Monitor component is installed and is connected with each assembly respectively by signal transmssion line; Carry out jet groutinl, progressively promote churning plasma discharge assembly; Whole jet groutinl process is monitored in real time by monitor component; Jet groutinl is complete, cleans each device.The invention solves unnecessary mud to spill and the earth heaving problem that causes, and processed is carried out to discarded slurry, to ensure that construction quality reduces environment pollution.
Description
Technical field
The present invention relates to a kind of foundation stabilization construction technique, be specifically related to a kind of under Rock soil Foundation environment in pressure controllable and without the high pressure jet grouting system of mud emission and construction method.
Background technology
Jet grounting, is called for short high spray in China or selects spray, be to be sprayed by nozzle by drilling rod with water under high pressure mud, forms injection stream, mixes and stirs the method for processing foundation forming cement-soil and reinforce with this cutting soil with soil.Churning drilling rod and churning drill bit are pierced ground desired depth for utilizing rig by detailed process, and cement grout is ejected by the nozzle high speed of high-pressure injection pump by churning drill bit, to form high-energy injection stream and directly to destroy the soil body.When the pressure that injection stream produces is greater than soil layer construction intensity, soil layer peels off.The grogs that peels off of small part to be emerged ground with slurries, and all the other grogs, under injection stream effect, mix with slurry agitation, and again mix regularly with quality according to a certain percentage.After grout cures, just in soil layer, form an induration.
Current, the basic technology type of jet grounting has: four kinds of methods such as single pipe method, double-tube method, three tube method and multiple tube method.The distinguishing characteristics of these four kinds of methods is, the quantity of the Grouting Pipe used and arrange difference: single pipe method only uses single channel Grouting Pipe; Double-tube method uses binary channels Grouting Pipe; Three tube method use triple Grouting Pipe of carrying water, gas, slurry three kinds of media respectively; Multiple tube method then uses multiple pipe, forms major diameter induration, and needs intelligent management.
But essentially, high pressure jet grouting ground stabilization is that cement grout is replaced the one of the soil body.Namely the cement grout ejected, to make in original soil layer the mud of the raw respective amount of fecund, and when practice of construction, the mud of the raw respective amount of fecund is Natural excrement from the gap of prebored hole and churning drilling rod just, and is difficult to control.If these mud can not be discharged to ground completely from stratum, extruding will be produced to surrounding soil, make neighbouring pipeline produce distortion or destroy, cause ground seriously to be swelled.In addition, construction party generally will not process in time to the discarded slurry produced of constructing, and causes the problems such as large, the random process for the treatment of capacity, thus affects construction environment, even cause secondary pollution.
Therefore, we need a kind of high pressure jet grouting construction equipment, unnecessary mud effectively can be avoided to spill uncontrolled problem, can carry out processed again, accomplish without mud emission discarded slurry.
Summary of the invention
For overcoming the defect existing for prior art, now provide a kind of controllably in pressure and without the high pressure jet grouting system of mud emission and construction method.Object is to solve unnecessary mud and not easily discharges and uncontrolled thus cause the problem of earth heaving, and carries out processed to discarded slurry, to ensure that construction quality reduces environment pollution.
For achieving the above object, the invention discloses pressure controllable in a kind of ground and without the high pressure jet grouting system of mud emission, comprising:
High pressure cement stock pump sending component, for the cement grout that high pressure pumping system is mixed;
Air ejection assemblies, carries compressed air to form air jet stream during for whitewashing;
High-pressure hydraulic pump sending component, for forming water under high pressure during plasma discharge;
Churning plasma discharge assembly, for spraying the slurry liquid protected by air jet stream when whitewashing to destroy the soil body, and the water under high pressure that ejection is formed by high-pressure hydraulic pump sending component when plasma discharge is to discharge unnecessary slurry liquid;
Plasma discharge processing components, carries out processed for the unnecessary slurry liquid of discharging churning plasma discharge assembly;
High pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component and plasma discharge processing components are connected with churning plasma discharge assembly respectively by air deflector;
Be provided with in churning plasma discharge assembly and in air deflector: for the jet channel of whitewashing and whitewashing passage, for the water under high pressure passage of plasma discharge and plasma discharge passage and the monitor channel for Signal transmissions;
Monitor component, by the detection signal that signal transmssion line reception high pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component and churning plasma discharge assembly send, and export corresponding feedback command according to described detection signal respectively, to control the start of above-mentioned each assembly in real time.
The further improvement of high pressure jet grouting system of the present invention is, high pressure cement stock pump sending component comprises: storage slurry device, cement paste flow meter, high-pressure injection pump and grouting pressure sensor; Storage slurry device is connected with whitewashing channel conductive by slip casting passage; Cement paste flow meter, high-pressure injection pump and grouting pressure sensor are arranged on slip casting passage respectively; Cement paste flow meter is connected with monitor component respectively by signal transmssion line with grouting pressure sensor, and the slurry flow signal sent for monitor component reception cement paste flow meter and grouting pressure sensor send slurry pressure signal;
Air ejection assemblies comprises: air compressor and gas flowmeter;
Air compressor is connected with jet channel conducting by air compressing passage;
Gas flowmeter is arranged on air compressing passage, and is connected with monitor component by signal transmssion line, for the spray air flow signal that monitor component receiver gases flow meter sends.
The further improvement of high pressure jet grouting system of the present invention is, high-pressure hydraulic pump sending component comprises: water tank, High-Pressure Water gauge, high-pressure hydraulic pump and high water pressure force snesor;
Water tank is connected with described high-pressure hydraulic pump by low-pressure water passage; On the low-pressure water passage that High-Pressure Water gauge and high water pressure force snesor are arranged at high-pressure hydraulic pump both sides respectively and water under high pressure passage;
High water pressure force snesor is connected with monitor component respectively by signal transmssion line with High-Pressure Water gauge, the water under high pressure transducing signal that the water under high pressure flow signal sent for monitor component reception High-Pressure Water gauge and high water pressure force snesor send;
Plasma discharge processing components comprises: treatment channel, useless slurry case and useless slurry processor;
Treatment channel is connected with plasma discharge channel conductive, and useless slurry case is connected with treatment channel conducting, uselessly starches processor with giving up and starches case conducting and be connected.
The further improvement of high pressure jet grouting system of the present invention is, churning plasma discharge assembly comprises: churning drilling rod, churning drill bit and jet drill rig;
Churning drilling rod comprises drilling rod shaft and lays respectively at the first drilling rod link and the second drilling rod link at drilling rod shaft two ends;
Churning drill bit is arranged at the first drilling rod link, and air deflector is arranged at the second drilling rod link;
Churning drill bit comprises: whitewashing section, plasma discharge section and the drill bit linkage section for being connected with churning drilling rod;
After plasma discharge section is connected to whitewashing section, after drill bit linkage section is connected to plasma discharge section;
Jet drill rig is arranged at prebored hole position ground needing high pressure jet grouting, and churning drilling rod and churning drill bit are interconnected and enter in prebored hole by jet drill rig; Jet drill rig comprises the joystick control for regulating and controlling churning drilling rod verticality, rotating speed and hoisting velocity.
The further improvement of high pressure jet grouting system of the present invention is, the drilling rod shaft of churning drilling rod comprises: the three sections of linkage sections connected successively; Jet channel, whitewashing passage, water under high pressure passage, plasma discharge passage and monitor channel is comprised in three sections of linkage sections.
The further improvement of high pressure jet grouting system of the present invention is, the whitewashing section of churning drill bit comprises: whitewashing section sidewall, be arranged at whitewashing section sidewall gas slurry coaxial nozzle and starch the jet channel and passage of whitewashing that coaxial nozzle conducting is connected respectively with gas;
The plasma discharge section of churning drill bit comprises: plasma discharge section sidewall, plasma discharge mouth, sensing drive member and plasma discharge passage;
Plasma discharge mouth is opened in the sidewall of plasma discharge section; Plasma discharge mouth place is provided with plasma discharge valve;
Under plasma discharge channel conductive to plasma discharge mouth, and offer pulp absorbing hole;
Sensing drive member is connected with plasma discharge valve, and controls the keying of plasma discharge valve by sensing drive member.
The further improvement of high pressure jet grouting system of the present invention is, plasma discharge section also comprises: water under high pressure passage and water spout; Under water under high pressure channel conductive to plasma discharge mouth; Water spout is connected with water under high pressure channel conductive;
Sensing drive member comprises: press detection sensor in double rod cylinder, displacement transducer and ground; Double rod cylinder comprises first piston bar and the second piston rod, and plasma discharge valve is connected with first piston bar, and displacement transducer is arranged at the telescopic location of the second piston rod;
Displacement transducer is connected with press detection sensor in ground;
In ground, press detection sensor coordinates monitor channel to be connected with monitor component by signal transmssion line, for pressure detecting signal in the ground that press detection sensor in monitor component reception ground sends and accordingly to double rod cylinder output plasma discharge valve start instruction.
Pressure controllable in ground and without the high pressure jet grouting construction method of mud emission,
Comprise the following steps:
Assembling churning plasma discharge assembly also location is transferred;
Air deflector is installed and is connected with churning plasma discharge element turns;
Assembling high pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component and plasma discharge processing components are also connected with air deflector respectively;
Monitor component is installed and is connected with high pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component and churning plasma discharge assembly by signal transmssion line;
Carry out jet groutinl, and progressively promote churning plasma discharge assembly;
Whole jet groutinl process is monitored in real time by monitor component;
Jet groutinl is complete, and cleans each assembly and air deflector.
High pressure jet grouting construction method of the present invention is improved further and is, before positioning churning plasma discharge assembly, also comprises: the step of prebored hole; And respectively high pressure cement stock pump sending component, air ejection assemblies and high-pressure hydraulic pump sending component are carried out to the step of each Self-debugging;
Whole jet groutinl process comprises: jet groutinl process and plasma discharge process;
After plasma discharge, also comprise the step of being carried out useless slurry process by plasma discharge processing components.
The further improvement of high pressure jet grouting construction method of the present invention is, whitewashing process comprises:
High pressure cement slurries are formed by high pressure cement stock pump sending component; Air jet stream is formed by air ejection assemblies; The high pressure cement slurries having air jet stream to protect are sprayed by churning plasma discharge assembly, and the verticality of the drilling rod of adjustment churning in real time, rotating speed and hoisting velocity;
Plasma discharge process comprises:
By the size of plasma discharge mouth in monitor component real-time monitoring plasma discharge assembly;
Useless slurry processing procedure comprises:
By plasma discharge processing components, processed is carried out, to form clear water and dregs to the discarded slurry entering useless slurry processor.
Beneficial effect of the present invention is:
1) by the joystick control of jet drill rig effectively to control to adjust verticality, rotating speed and the hoisting velocity of boring spray drilling rod in jet groutinl process;
2) by setting up inductor and connect monitor component and real-time monitoring in churning drill bit, with the plasma discharge amount in effective ACTIVE CONTROL jet groutinl process, unnecessary mud is impelled successfully to discharge;
3) by the process that monitor component is monitored in real time, to guarantee pressure balance and soil stabilization in ground, earth heaving phenomenon is avoided;
4) by setting and the enforcement of churning plasma discharge assembly, to ensure the diameter of grouting pile-forming, construction quality and progress is guaranteed;
5) by arranging useless slurry processing components, to realize the dehydration of useless slurry and to form dregs, the pollution of construction environment is reduced.
Advantage of the present invention: technological design is comprehensive, and beneficial effect is remarkable.
Accompanying drawing explanation
Fig. 1 is that the general construction of high pressure jet grouting system of the present invention arranges schematic diagram;
Fig. 2 is the vibrational power flow enlarged diagram of high pressure jet grouting system mesohigh cement slurrypump sending component of the present invention, air ejection assemblies, high-pressure hydraulic pump sending component and plasma discharge processing components;
Fig. 3 is the enlarged diagram of churning plasma discharge assembly in high pressure jet grouting system of the present invention;
Fig. 4 is the structural representation of churning drill bit in high pressure jet grouting system of the present invention;
Fig. 5 is the schematic front view of churning drilling rod in high pressure jet grouting system of the present invention;
Fig. 6 is the schematic cross-section of churning drilling rod in high pressure jet grouting system of the present invention;
Fig. 7 is the schematic flow sheet of high-pressure mortar spraying construction method of the present invention.
Detailed description of the invention
For the benefit of to the understanding of structure of the present invention, be described below in conjunction with drawings and Examples.
With reference to shown in Fig. 1 and Fig. 7, the present invention a kind of controllably in pressure and the high-pressure slip-casting construction equipment spilt without mud.Technique of the present invention comprises relevant device and construction method, and object is to solve unnecessary mud and discharges uncontrolled thus cause the problem of earth heaving, and carries out processed to discarded slurry, to ensure that construction quality reduces environment pollution.
As shown in Figure 1, high pressure jet grouting system of the present invention comprises:
High pressure cement stock pump sending component 1, for the slurry liquid that high pressure pumping system is mixed;
Air ejection assemblies 2, carries compressed air to form air jet stream during for whitewashing;
High-pressure hydraulic pump sending component 3, for forming water under high pressure during plasma discharge;
Churning plasma discharge assembly 4, for spraying the cement grout protected by air jet stream when whitewashing to destroy the soil body, and the water under high pressure that ejection is formed by high-pressure hydraulic pump sending component when plasma discharge is to discharge superfluous water slurry liquid;
Plasma discharge processing components 5, for reclaiming superfluous water slurry liquid that churning plasma discharge assembly discharges and carrying out recycling process;
Monitor component 6, by the detection signal that signal transmssion line reception high pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component and churning plasma discharge assembly send, specifically comprise the one in flow signal and pressure sensor signal or their combination, and respectively corresponding feedback command is exported to detection signal, to control the start of above-mentioned each assembly in real time.
Be below the comparatively preferred configuration settings of high pressure jet grouting system of the present invention:
As shown in Figure 1, high pressure cement stock pump sending component 1, air ejection assemblies 2, high-pressure hydraulic pump sending component 3 and plasma discharge processing components 5 are connected with churning plasma discharge assembly 4 respectively by air deflector 7.
Composition graphs 5, all arranges in churning plasma discharge assembly 4 and in air deflector 7 and comprises: for the jet channel 442 of whitewashing and whitewashing passage 441, for the water under high pressure passage 447 of plasma discharge and plasma discharge passage 449 and the monitor channel for Signal transmissions.
As shown in Figure 2, monitor component 6 is provided with technological parameter monitor 60.
As shown in Figure 2, high pressure cement stock pump sending component 1 is provided with storage slurry device 10, cement paste flow meter 12, high-pressure injection pump 14 and grouting pressure sensor 16.
Wherein, storage slurry device 10 is connected with whitewashing passage 441 by slip casting passage, cement paste flow meter 12, high-pressure injection pump 14 and grouting pressure sensor 16 are arranged on slip casting passage respectively, and cement paste flow meter 12 is connected with technological parameter monitor 60 respectively by signal transmssion line 8 with grouting pressure sensor 16.
As shown in Figure 2, air ejection assemblies 2 is provided with air compressor 20 and gas flowmeter 22.
Wherein, air compressor 20 is connected with jet channel 442 by air compressing passage; Gas flowmeter 22 is arranged on air compressing passage, and is connected with technological parameter monitor 60 by signal transmssion line 8.
As shown in Figure 2, high-pressure hydraulic pump sending component 3 is provided with water tank 30, High-Pressure Water gauge 32, high-pressure hydraulic pump 34 and high water pressure force snesor 36.
Wherein, water tank 30 is connected with high-pressure hydraulic pump 34 by low-pressure water passage, High-Pressure Water gauge 32, high-pressure hydraulic pump 34 and high water pressure force snesor 36 are arranged on low-pressure water passage and water under high pressure passage 447 respectively, and high water pressure force snesor 36 is connected with technological parameter monitor 60 respectively by signal transmssion line 8 with High-Pressure Water gauge 32.
As shown in Figure 2, plasma discharge processing components 5 is provided with treatment channel 54, useless slurry case 50 and useless slurry processor 52.Wherein, treatment channel 54 is connected with plasma discharge passage 449, and useless slurry case 50 is connected with treatment channel 54 conducting; Useless slurry processor 52 is starched case 50 by treatment channel 54 and is connected with giving up.
As shown in Figure 3, churning plasma discharge assembly 4 is provided with churning drilling rod 42, churning drill bit 44 and jet drill rig 46.
Wherein, the lower end of churning drilling rod 42 is connected with churning drill bit 44 conducting, the upper end of churning drilling rod 42 is connected with air deflector 7 conducting, and jet drill rig 46 is arranged on churning drilling rod 42, is provided with the joystick control 462 for regulating and controlling churning drilling rod 42 verticality, rotating speed and hoisting velocity in jet drill rig 46.
As shown in Figure 4, churning drilling rod 42 is provided with two ends, left and right and drilling rod shaft as illustrated in the drawing, and according to sequencing from left to right in Fig. 4, is provided with the first linkage section 422 successively, connects stage casing 424 and the second linkage section 426.
Wherein, churning drill bit 44 is connected with the first linkage section 422 by sealing shroud group 425, after connection stage casing 424 is connected to the first linkage section 422, after the second linkage section 426 is connected to and connects stage casing 424, after air deflector 7 is connected to the second linkage section 426.
As shown in Figure 5, in churning drilling rod 42, be provided with drilling rod passage group 423, in it, comprise jet channel 442 and whitewashing passage 441, water under high pressure passage 447, plasma discharge passage 449, monitor channel and two oil pipe passages.
As shown in Figure 6, churning drill bit 44 is provided with whitewashing section, plasma discharge section and the drill bit linkage section for connecting churning drilling rod 42.
Wherein, according to sequencing from left to right in Fig. 6, after plasma discharge section is connected to whitewashing section, after drill bit linkage section is connected to plasma discharge section.
In Fig. 6, whitewashing section is provided with whitewashing section body, be arranged at the gas slurry coaxial nozzle 440 of whitewashing section body 4 sidewall and starch the jet channel 442 and passage 441 of whitewashing that coaxial nozzle 440 conducting is connected respectively with gas.
In Fig. 6, plasma discharge section is provided with plasma discharge section sidewall, be opened in the plasma discharge mouth 448 of plasma discharge section sidewall, be arranged at water under high pressure passage 447 in plasma discharge section and plasma discharge passage 449.
Under plasma discharge passage 449 conducting to plasma discharge mouth 448, and form pulp absorbing hole.Plasma discharge mouth place is provided with a plasma discharge valve 446, and plasma discharge valve 446 connects sensing drive member.Water under high pressure passage 447 conducting to plasma discharge mouth 448 times, and connects water spout.
Sensing drive member comprises press detection sensor 443 in double rod cylinder 445, displacement transducer 444 and ground.Double rod cylinder 445 comprises first piston bar and the second piston rod, and plasma discharge valve 446 is connected with first piston bar, and displacement transducer 444 is arranged at the telescopic location of the second piston rod.Displacement transducer 444 is connected with press detection sensor in ground 443, and in ground, press detection sensor 443 is connected with technological parameter monitor 60 by signal transmssion line 8.Multi cord is merged into after the signal transmssion line 8 be connected with each sensor gathers.
After completing the assembling of above structure, be below the implementation process of high pressure jet grouting system of the present invention:
Composition graphs 2 and Fig. 3, first carry out taking out slurry process:
After assembling, be placed in the cement hardener slurries that in storage slurry device 10, mixing is good, high-pressure injection pump 14 receive that technological parameter monitor 60 sends take out slurry enabling signal after, cement hardener slurries are extracted in slip casting passage, and flow through cement paste flow meter 12, form the cement grout with certain flow and pressure.Cement grout flows through grouting pressure sensor 16 and air deflector 7, enters in churning drilling rod 42.In this process, cement paste flow meter 12 constantly sends slurry flow signal, and grouting pressure sensor 16 constantly sends slurry pressure signal, and technological parameter monitor 60 constantly receives slurry flow signal and slurry pressure signal, to realize the real-time monitoring to taking out slurry.
Composition graphs 3 to Fig. 6, carries out jet groutinl process afterwards:
While cement grout enters churning drilling rod 42, the jet enabling signal that technological parameter monitor 60 sends, air compressor 20 is bled after receiving jet enabling signal, form the Compressed Gas 24 with certain flow and pressure, and entering compressed air channel, Compressed Gas 24 is entered in churning drilling rod 42 by gas flowmeter 22 and air deflector 7 again.In this process, gas flowmeter 22 constantly sends spray air flow signal, and technological parameter monitor 60 constantly receives spray air flow signal, to realize jet real-time control.
After cement grout and Compressed Gas 24 enter churning drilling rod 42; whitewashing passage 441 respectively in churning drill bit 44 and jet channel 442; at a high speed by also together spraying after gas slurry coaxial nozzle 440, to be formed with the high pressure cement slurries 18 that Compressed Gas 24 is protected.These high pressure cement slurries 18 pairs of soil bodys destroy, and in continuous destructive process, rotation limit, churning drill bit 44 limit promotes, and cement grout and the soil body is fully uniformly mixed, forms the cement-soil column induration of certain diameter in soil.And the verticality of churning drilling rod 42, rotating speed and hoisting velocity have display on the operation board 462 of jet drill rig 46, and control can be adjusted.
Composition graphs 2 to Fig. 6, then carries out plasma discharge process:
In the process that rotation limit, churning drill bit 44 limit promotes, carry out plasma discharge simultaneously.
Technological parameter monitor 60 sends enabling signal to high-pressure hydraulic pump 36, is placed in the water in water tank 30, by High-Pressure Water gauge 32, high-pressure hydraulic pump 36, forms the water under high pressure with certain flow.Water under high pressure, by high water pressure force snesor 34 and air deflector 7, enters churning drilling rod 42 and churning drill bit 44.The sidewall of churning drill bit 44 offers plasma discharge mouth, and High-Pressure Water, after plasma discharge water under high pressure passage 447 in churning drill bit 44, is sprayed to plasma discharge mouth 448 by water spout.The water under high pressure of ejection makes plasma discharge mouth produce pressure differential, and the unnecessary mud that churning is produced sucks plasma discharge passage 449.Unnecessary slurry flows, through plasma discharge passage 449, air deflector 7 and plasma discharge flexible pipe 54, enters useless slurry case 50 interim storage.
In this process, the number of unnecessary mud discharge rate, can cause pressure oscillation in the ground around churning drill bit, therefore, particularly important.The amount of plasma discharge sends pressure signal in ground by press detection sensor in ground 444, so that display and regulation and control in technological parameter monitor 60.When in local, force value is less than setting value, technological parameter monitor 60, by controlling double rod cylinder 445, makes plasma discharge valve 446 move right, and opens size with what reduce plasma discharge mouth 448, to the soakage of unnecessary mud and plasma discharge amount be reduced, thus make in ground force value close to setting value; Otherwise, when in local, force value is greater than setting value, then increase water under high pressure flow or increase plasma discharge mouth 448 open size, soakage and the plasma discharge amount of unnecessary mud will be increased, thus to make in ground force value close to setting value.
With this, realize pressure controllable function in ground.
With reference to shown in Fig. 2, finally carry out useless slurry process:
The discarded slurry of interim storage in useless slurry case 50, send into useless slurry processor 52 and dewater, form clear water and dregs, clear water can reuse, and dregs moisture content, can directly with the outward transport of earthwork car between 34% and 43%.The dehydrating amount of mud can reach 2/3, and reach the zero-emission of high pressure jet grouting construction discarded slurry, high pressure jet grouting construction speed of avoiding over is by the impact of mud emission.
As shown in Figure 7, high pressure jet grouting construction method of the present invention mainly comprises:
Step S1, assembling churning plasma discharge assembly 4 also location is transferred;
Step S2, installs air deflector 7 and is connected with the conducting of churning plasma discharge assembly 4;
Step S3, assembling high pressure cement stock pump sending component 1, air ejection assemblies 2, high-pressure hydraulic pump sending component 3 and plasma discharge processing components 5 are also connected with air deflector 7 respectively;
Step S4, is installed monitor component 6 and is connected with each device in step S3 by signal transmssion line 8;
Step S5, carries out jet groutinl, and progressively promotes churning plasma discharge assembly 4;
Step S6, by the monitor component 6 whole jet groutinl process of monitoring in real time;
Step S7, jet groutinl is complete, and cleans each assembly and air deflector 7.
Comparatively preferred, following enforcement further can be carried out:
Before step S1, increase the step of prebored hole, and increase the step that each assembly in step S3 is debugged.
Whole jet groutinl process in step S6 comprises: jet groutinl process and plasma discharge process.
After step S6, also comprise the step of being carried out useless slurry process by plasma discharge processing components 5.
Below for present invention process construction method practice process:
First, prebored hole is carried out.
Utilize general geology to bore spray rig 46, the high pressure jet grouting construction location of design is holed and reaches desired depth.
Secondly, jet drill rig 46 is located.
Comprise and bore the supporting Hydraulic Station of spray rig 46, bore spray drilling rod 44 upending frame is installed, and the auxiliary equipment such as electric block, the oil pipe boring spray rig 46 connects, electrical wiring, control box access power supply etc.
Again, the debugging of churning relevant device is carried out.
The grout mixer of automatic weighing and material loading, store starch device 10, high-pressure injection pump 14, high-pressure hydraulic pump 36 work well with air compressor 20 hot-line test, and meet the requirements of running parameter.
Afterwards, churning drill bit 44, churning drilling rod 42 are installed, and are transferred to desired depth.
Churning drill bit 44, churning drilling rod 42 are installed section by section, and connect press detection sensor 443 and signal transmssion line 8 in the ground in churning drill bit 44, after completing, transfer to desired depth.
Then, install air deflector 7, line pipe of going forward side by side road connects.
Air deflector 7 on churning drilling rod is installed, make drilling rod passage group 423 respectively with each channel conductive in air deflector 7.Drilling rod passage group 423, comprises jet channel 442 and whitewashing passage 441, water under high pressure passage 447, plasma discharge passage 449, monitor channel and two oil pipe passages for controlling plasma discharge valve in it.Air deflector 7 is connected to technological parameter monitor 60 by signal transmssion line 8.
Carry out high pressure cement stock pump sending component 1, air ejection assemblies 2, high-pressure hydraulic pump sending component 3 and plasma discharge processing components 5 to be further connected with the conducting of air deflector 7 respectively, and monitor component 6 is installed and is connected with high pressure cement stock pump sending component 1, air ejection assemblies 2, high-pressure hydraulic pump sending component 3 and plasma discharge processing components 5 respectively by signal transmssion line 8.
After each assembly installation, implement rotary jet grouting.
Open high-pressure injection pump 14, pressure is adjusted to design load, and speed promotes churning drilling rod 42 on request, carries out rotary jet grouting.This process need monitor each parameters of construction technology value, and according to pressure in the ground, churning drill bit 42 place recorded, adjusts plasma discharge mouth size and water under high pressure flow, to make in ground Stress control in scope of design.When churning promotes joint churning drilling rod 42 length, close high-pressure injection pump 14, high-pressure hydraulic pump 36, air compressor 20 and plasma discharge valve 446, remove a joint churning drilling rod, proceed to promote rotary jet grouting operation.
In churning process, carry out plasma discharge process simultaneously.
Ejection water under high pressure makes plasma discharge mouth produce pressure differential, and the unnecessary mud that churning is produced sucks plasma discharge passage 449.Unnecessary slurry flows, through plasma discharge passage 449, air deflector 7 and plasma discharge flexible pipe 54, enters useless slurry case 50 interim storage.
Finally, slip casting is complete, exits and bores spray drilling rod 44.
Until rotary jet grouting terminates, close high-pressure injection pump 14, high-pressure hydraulic pump 36, air compressor 20 and plasma discharge valve 446, churning drill bit 44 is proposed orifice position.
After rotary jet grouting, rinse related device, jet drill rig 46 moves to the rotary-spraying construction of next position, hole.Open jetting machine, rinse grouting pipe in churning drilling rod with clear water, then jet drill rig 46 is displaced to position, next mortar depositing construction hole, the high pressure jet grouting in order to next position, hole is constructed.
In high pressure jet grouting work progress, to the work for the treatment of that the discarded slurry of discharging carries out in time.
The discarded slurry of interim storage in useless slurry case 50, send into useless slurry processor 52 and dewater, form clear water and dregs, clear water can reuse, and dregs moisture content, can directly with the outward transport of earthwork car between 34% and 43%.
After completing high pressure jet grouting Operation system setting of the present invention and implementation method, reflect following beneficial effect:
1) by the joystick control 462 of jet drill rig 46 effectively to control to adjust verticality, rotating speed and the hoisting velocity of boring spray drilling rod 42 in jet groutinl process;
2) by setting up inductor and connect monitor component 6 and real-time monitoring in churning drill bit 44, with the plasma discharge amount in effective ACTIVE CONTROL jet groutinl process, unnecessary mud is impelled successfully to discharge;
3) by the process of monitor component 6 monitoring in real time, to guarantee pressure balance and soil stabilization in ground, earth heaving phenomenon is avoided;
4) by setting and the enforcement of churning plasma discharge assembly 4, to ensure the diameter of grouting pile-forming, construction quality and progress is guaranteed;
5) by arranging useless slurry processing components 5, to dewater to useless slurry and to form dregs, the pollution of construction environment is reduced.
Below embodiment is to invention has been detailed description by reference to the accompanying drawings, and those skilled in the art can make many variations example to the present invention according to the above description.Thus, some details in embodiment should not form limitation of the invention, the present invention by the scope that defines using appended claims as protection domain.
Claims (8)
1. pressure controllable and without the high pressure jet grouting system of mud emission, it is characterized in that, comprising in ground:
High pressure cement stock pump sending component, for the slurry liquid that high pressure pumping system is mixed;
Air ejection assemblies, carries compressed air to form air jet stream during for whitewashing;
High-pressure hydraulic pump sending component, for forming water under high pressure during plasma discharge;
Churning plasma discharge assembly, for spraying the slurry liquid protected by described air jet stream when whitewashing to destroy the soil body, and the described water under high pressure that ejection is formed by described high-pressure hydraulic pump sending component when plasma discharge is to discharge superfluous water slurry liquid;
Plasma discharge processing components, for reclaiming described superfluous water slurry liquid that described churning plasma discharge assembly discharges and carrying out recycling process;
Described high pressure cement stock pump sending component, described air ejection assemblies, described high-pressure hydraulic pump sending component and described plasma discharge processing components are connected with described churning plasma discharge assembly respectively by air deflector;
Be provided with in described churning plasma discharge assembly and in described air deflector: for the jet channel of whitewashing and whitewashing passage, for the water under high pressure passage of plasma discharge and plasma discharge passage and the monitor channel for Signal transmissions;
Monitor component, the detection signal that described high pressure cement stock pump sending component, described air ejection assemblies, described high-pressure hydraulic pump sending component and described churning plasma discharge assembly send is received by signal transmssion line, and export corresponding feedback command according to described detection signal respectively, to control the start of above-mentioned each assembly in real time;
Described churning plasma discharge assembly comprises: churning drilling rod, churning drill bit and jet drill rig;
Described churning drilling rod comprises drilling rod shaft and lays respectively at the first drilling rod link and the second drilling rod link at described drilling rod shaft two ends;
Described churning drill bit is arranged at described first drilling rod link, and described air deflector is arranged at described second drilling rod link;
Described churning drill bit comprises: whitewashing section, plasma discharge section and the drill bit linkage section for being connected with described churning drilling rod;
After described plasma discharge section is connected to described whitewashing section, after described drill bit linkage section is connected to described plasma discharge section;
Described jet drill rig is arranged at prebored hole position ground needing high pressure jet grouting, and described churning drilling rod and described churning drill bit are interconnected and enter in described prebored hole by described jet drill rig; Described jet drill rig comprises the joystick control for regulating and controlling described churning drilling rod verticality, rotating speed and hoisting velocity;
The whitewashing section of described churning drill bit comprises: whitewashing section sidewall, be arranged at described whitewashing section sidewall gas slurry coaxial nozzle and starch the described jet channel and described whitewashing passage that coaxial nozzle conducting is connected respectively with described gas;
The plasma discharge section of described churning drill bit comprises: plasma discharge section sidewall, plasma discharge mouth, sensing drive member and described plasma discharge passage;
Described plasma discharge mouth is opened in the sidewall of described plasma discharge section;
Under described plasma discharge channel conductive to described plasma discharge mouth, and offer pulp absorbing hole;
Described plasma discharge mouth place is provided with plasma discharge valve;
Described sensing drive member is connected with described plasma discharge valve, and controls the keying of described plasma discharge valve by described sensing drive member.
2. high pressure jet grouting system according to claim 1, is characterized in that,
Described high pressure cement stock pump sending component comprises: storage slurry device, cement paste flow meter, high-pressure injection pump and grouting pressure sensor; Described storage slurry device is connected with described whitewashing channel conductive by slip casting passage;
Described cement paste flow meter, described high-pressure injection pump and described grouting pressure sensor are arranged on described slip casting passage respectively; Described cement paste flow meter is connected with described monitor component respectively by described signal transmssion line with described grouting pressure sensor, receives slurry flow signal that described cement paste flow meter sends and the slurry pressure signal that described grouting pressure sensor sends for described monitor component;
Described air ejection assemblies comprises: air compressor and gas flowmeter;
Described air compressor is connected with described jet channel conducting by air compressing passage;
Described gas flowmeter is arranged on described air compressing passage, and is connected with described monitor component by described signal transmssion line, receives for described monitor component the spray air flow signal that described gas flowmeter sends.
3. high pressure jet grouting system according to claim 1, is characterized in that,
Described high-pressure hydraulic pump sending component comprises: water tank, High-Pressure Water gauge, high-pressure hydraulic pump and high water pressure force snesor;
Described water tank is connected with described high-pressure hydraulic pump by low-pressure water passage; On the low-pressure water passage that described High-Pressure Water gauge and described high water pressure force snesor are arranged at described high-pressure hydraulic pump both sides respectively and described water under high pressure passage;
Described high water pressure force snesor is connected with described monitor component respectively by described signal transmssion line with described High-Pressure Water gauge, receives water under high pressure flow signal that described High-Pressure Water gauge sends and the water under high pressure transducing signal that described high water pressure force snesor sends for described monitor component;
Described plasma discharge processing components comprises: treatment channel, useless slurry case and useless slurry processor;
Described treatment channel is connected with described plasma discharge channel conductive, and described useless slurry case is connected with described treatment channel conducting, and described useless slurry processor is connected with the conducting of described useless slurry case.
4. high pressure jet grouting system according to claim 1, is characterized in that,
The drilling rod shaft of described churning drilling rod comprises: the three sections of linkage sections connected successively;
Described jet channel, described whitewashing passage, described water under high pressure passage, described plasma discharge passage and described monitor channel is included in described three sections of linkage sections.
5. high pressure jet grouting system according to claim 1, is characterized in that,
Described plasma discharge section also comprises: described water under high pressure passage and water spout;
Under described water under high pressure channel conductive to described plasma discharge mouth;
Described water spout is connected with described water under high pressure channel conductive;
Described sensing drive member comprises: press detection sensor in double rod cylinder, displacement transducer and ground;
Described double rod cylinder comprises first piston bar and the second piston rod, and described plasma discharge valve is connected with described first piston bar, and institute's displacement sensors is arranged at the telescopic location of described second piston rod;
Institute's displacement sensors is connected with press detection sensor in described ground;
In described ground, press detection sensor coordinates described monitor channel to be connected with described monitor component by described signal transmssion line, receives pressure detecting signal in ground that in described ground, press detection sensor sends and export plasma discharge valve start instruction to described double rod cylinder accordingly for described monitor component.
6., based on the high pressure jet grouting construction method as high pressure jet grouting system as described in any one in claim 1 to 5, it is characterized in that, comprise the following steps:
Assembling churning plasma discharge assembly positioning is transferred;
Air deflector is installed and is connected with described churning plasma discharge element turns;
Assembling high pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component and plasma discharge processing components are also connected with air deflector respectively;
Monitor component is installed and is connected with described high pressure cement stock pump sending component, described air ejection assemblies, described high-pressure hydraulic pump sending component and churning plasma discharge assembly respectively by signal transmssion line;
Carry out jet groutinl, and progressively promote churning plasma discharge assembly;
Whole jet groutinl process is monitored in real time by monitor component;
Jet groutinl is complete, cleans respectively to each assembly and air deflector.
7. high pressure jet grouting construction method according to claim 6, is characterized in that,
Before described churning plasma discharge assembly is positioned, also comprise: the step of prebored hole; And
Respectively described high pressure cement stock pump sending component, described air ejection assemblies and described high-pressure hydraulic pump sending component are carried out to the step of each Self-debugging;
Described whole jet groutinl process comprises: jet groutinl process and plasma discharge process;
After plasma discharge, also comprise the step of being carried out useless slurry process by described plasma discharge processing components.
8. high pressure jet grouting construction method according to claim 7, is characterized in that,
Described whitewashing process comprises:
High pressure cement slurries are formed by described high pressure cement stock pump sending component; Air jet stream is formed by described air ejection assemblies; The high pressure cement slurries having air jet stream to protect are sprayed by described churning plasma discharge assembly, and the verticality of the described churning drilling rod of real-time adjustment, rotating speed and hoisting velocity;
Described plasma discharge process comprises:
By the size of plasma discharge mouth in plasma discharge assembly described in described monitor component real-time monitoring;
Described useless slurry processing procedure comprises:
By described plasma discharge processing components, processed is carried out, to form clear water and dregs to the discarded slurry entering described useless slurry processor.
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