CN103790152A - Slurry-discharge-free high-pressure jet grouting system with pressure in ground controllable and construction method - Google Patents
Slurry-discharge-free high-pressure jet grouting system with pressure in ground controllable and construction method Download PDFInfo
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- CN103790152A CN103790152A CN201410023170.1A CN201410023170A CN103790152A CN 103790152 A CN103790152 A CN 103790152A CN 201410023170 A CN201410023170 A CN 201410023170A CN 103790152 A CN103790152 A CN 103790152A
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Abstract
The invention provides a slurry-discharge-free high-pressure jet grouting system with pressure in the ground controllable and a construction method. The high-pressure jet grouting system comprises a high-pressure cement slurry pumping assembly, an air jet assembly, a high-pressure water pumping assembly, a rotary jet slurry discharging assembly, a slurry discharging treating assembly and a monitoring assembly. The high-pressure jet grouting construction method includes the steps that the rotary jet slurry discharging assembly is assembled and placed down in a positioned mode; a fluid director is installed and connected with the rotary jet slurry discharging assembly in a conducting mode; all the assemblies are assembled and respectively connected with the fluid director; the monitoring assembly is installed and respectively connected with all the assemblies through signal transmission lines; jet grouting is performed, and the rotary jet slurry discharging assembly is lifted step by step; the whole jet grouting process is monitored in real time through the monitoring assembly; all the devices are washed after jet grouting. The problem that redundant slurry leaks to cause ground upheaval is solved, and waste slurry is dewatered to ensure construction quality and reduce environmental 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 internal pressure controlled and without high pressure jet grouting system and the construction method of mud emission.
Background technology
Jet grounting, is called for short high spray method or selects spray method in China, is to be sprayed by nozzle by drilling rod with water under high pressure mud, forms injection stream, mixes and stirs and forms the method for processing foundation that cement-soil is reinforced with this cutting soil and with soil.Detailed process is for utilizing rig that churning drilling rod and churning drill bit are pierced to ground desired depth, and cement grout is ejected by the nozzle high speed of churning drill bit by high-pressure injection pump, to form high-energy injection stream and directly to destroy the soil body.When the pressure producing when injection stream is greater than soil layer construction intensity, soil layer peels off.The grogs that small part is peeled off is with the slurries ground of emerging, and all the other grogs, under injection stream effect, mix with slurry agitation, and again mixes regularly with quality according to a certain percentage.After slurries solidify, 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 pipe methods and multiple Guan Fa.The distinguishing characteristics of these four kinds of methods is, the quantity of the Grouting Pipe using and difference is set: single pipe method only uses single channel Grouting Pipe; Double-tube method uses binary channels Grouting Pipe; Three pipe methods are used triple Grouting Pipe of carrying respectively water, gas, three kinds of media of slurry; Multiple pipe rule is used multiple pipe, forms major diameter induration, and needs intelligent management.
But from essence, high pressure jet grouting ground stabilization is the one displacement of cement grout to the soil body.The cement grout ejecting, can make in former soil layer the mud of the raw respective amount of fecund, in the time of practice of construction, and the just Natural excrement from the gap of prebored hole and churning drilling rod of mud of the raw respective amount of fecund, and be difficult to control.If these mud can not be discharged to ground completely from stratum, will produce extruding to surrounding soil, near making, pipeline produces distortion or destroys, and causes ground seriously to be swelled.In addition, the discarded slurry that construction party generally produces construction will not be processed in time, causes the problems such as large, the random processing for the treatment of capacity, thereby affects construction environment, even causes secondary pollution.
Therefore, we need a kind of high pressure jet grouting construction equipment, can effectively avoid unnecessary mud to spill uncontrolled problem, can carry out processed to discarded slurry again, accomplish without mud emission.
Summary of the invention
For overcoming the existing defect of prior art, now provide a kind of controllably internal pressure and high pressure jet grouting system and construction method without mud emission.Thereby object is to solve unnecessary mud to be difficult for discharging and the uncontrolled problem that causes earth heaving, and discarded slurry is carried out to processed, to guarantee that construction quality reduces environment pollution.
For achieving the above object, the invention discloses a kind of ground internal pressure controlled and without the high pressure jet grouting system of mud emission, comprising:
High pressure cement stock pump sending component, the cement grout of mixing for high pressure pumping system;
Air ejection assemblies, carries when whitewashing compressed air to form air jet stream;
High-pressure hydraulic pump sending component, forms water under high pressure during for plasma discharge;
Churning plasma discharge assembly, for spraying the mud liquid of being protected by air jet stream to destroy the soil body in the time whitewashing, and the water under high pressure that ejection is formed by high-pressure hydraulic pump sending component in the time of plasma discharge is to discharge unnecessary mud liquid;
Plasma discharge processing components, carries out processed for the unnecessary mud liquid that churning plasma discharge assembly is discharged;
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;
In churning plasma discharge assembly and in air deflector, be provided with: for the jet channel of whitewashing and whitewashing passage, for the water under high pressure passage of plasma discharge and plasma discharge passage and for the monitor channel of signal transmission;
Monitor component, receive by signal transmssion line the detection signal that 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 in real time the start of above-mentioned each assembly.
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 the conducting of whitewashing passage by slip casting passage; Cement paste flow meter, high-pressure injection pump and grouting pressure sensor are arranged at respectively on slip casting passage; Cement paste flow meter is connected with monitor component by signal transmssion line respectively with grouting pressure sensor, and the slurry flow signal and the grouting pressure sensor that send for monitor component reception cement paste flow meter send slurries 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, the spray air flow signal sending for monitor component receiver gases flow meter.
The further improvement of high pressure jet grouting system of the present invention is, high-pressure hydraulic pump sending component comprises: water tank, water under high pressure flow meter, high-pressure hydraulic pump and water under high pressure pressure sensor;
Water tank is connected with described high-pressure hydraulic pump by low-pressure water passage; Water under high pressure flow meter and water under high pressure pressure sensor are arranged at respectively on the low-pressure water passage and water under high pressure passage of high-pressure hydraulic pump both sides;
Water under high pressure pressure sensor is not connected with monitor component by signal transmssion line with the score of water under high pressure flow, the water under high pressure transducing signal that the water under high pressure flow signal sending for monitor component reception water under high pressure flow meter and water under high pressure pressure sensor send;
Plasma discharge processing components comprises: treatment channel, useless slurry case and useless slurry processor;
Treatment channel is connected with the conducting of plasma discharge passage, and useless slurry case is connected with treatment channel conducting, and useless slurry processor is connected with the conducting of useless slurry case.
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 in whitewashing section, after drill bit linkage section is connected in plasma discharge section;
Jet drill rig is arranged at needs the prebored hole of high pressure jet grouting position on ground, churning drilling rod and churning drill bit interconnect 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: three sections of linkage sections that connect successively; In three sections of linkage sections, comprise jet channel, whitewashing passage, water under high pressure passage, plasma discharge passage and monitor channel.
The further improvement of high pressure jet grouting system of the present invention is, the whitewashing section of churning drill bit comprises: a whitewashing section sidewall, the jet channel and the passage of whitewashing that are arranged at the gas slurry coaxial nozzle of whitewashing section sidewall and are connected with the conducting of gas slurry coaxial nozzle respectively;
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;
The conducting of plasma discharge passage, to plasma discharge mouth, and offers pulp absorbing hole;
Sensing drive member is connected with plasma discharge valve, and by the keying of sensing drive member control plasma discharge valve.
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; The conducting of water under high pressure passage is to plasma discharge mouth; Water spout is connected with the conducting of water under high pressure passage;
Sensing drive member comprises: double rod cylinder, displacement transducer and ground internal pressure detecting sensor; 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 ground internal pressure detecting sensor;
Ground internal pressure detecting sensor coordinates monitor channel to be connected with monitor component by signal transmssion line, and the ground internal pressure detection signal sending for monitor component reception ground internal pressure detecting sensor is also exported plasma discharge valve start instruction to double rod cylinder accordingly.
Ground internal pressure is controlled and without the high pressure jet grouting construction method of mud emission,
Comprise the following steps:
Transfer assembling churning plasma discharge assembly location;
Air deflector is installed and is connected with the conducting of churning plasma discharge assembly;
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;
Spray slip casting, and progressively promote churning plasma discharge assembly;
By the monitor component whole injection slip casting process of monitoring in real time;
Injection slip casting is complete, and each assembly and air deflector are cleaned.
High pressure jet grouting construction method of the present invention is further improved and is, before churning plasma discharge assembly is positioned, 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 the step of each Self-debugging;
Whole injection slip casting process comprises: spray slip casting process and plasma discharge process;
After plasma discharge, also comprise by plasma discharge processing components and give up and starch the step of processing.
The further improvement of high pressure jet grouting construction method of the present invention is, whitewashing process comprises:
Form high pressure cement slurries by high pressure cement stock pump sending component; Form air jet stream by air ejection assemblies; There are the high pressure cement slurries of air jet stream protection by the ejection of churning plasma discharge assembly, and adjust in real time verticality, rotating speed and the hoisting velocity of churning drilling rod;
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, the discarded slurry that enters useless slurry processor is carried out to processed, to form clear water and dregs.
Beneficial effect of the present invention is:
1) spray verticality, rotating speed and the hoisting velocity of in slip casting process, boring spray drilling rod by the joystick control of jet drill rig effectively to control to adjust;
2) by setting up inductor and connect monitor component real-time monitoring in churning drill bit, spray the plasma discharge amount in slip casting process with effective ACTIVE CONTROL, impel unnecessary mud successfully to discharge;
3) by the monitor component process of monitoring in real time, to guarantee ground internal pressure balance and soil stabilization, avoid earth heaving phenomenon;
4), by setting and the enforcement of churning plasma discharge assembly, to guarantee the diameter of grouting pile-forming, guarantee construction quality and progress;
5) by useless slurry processing components is set, to realize the dehydration of useless slurry and to form dregs, reduce the pollution of construction environment.
Advantage of the present invention: technological design is comprehensive, 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 that the structure 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 arranges enlarged diagram;
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 that the master of churning drilling rod in high pressure jet grouting system of the present invention looks schematic diagram;
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.
The specific embodiment
For the benefit of the understanding to structure of the present invention, describes below in conjunction with drawings and Examples.
Shown in Fig. 1 and Fig. 7, a kind of controllably internal pressure of the present invention and the high-pressure slip-casting construction equipment spilling without mud.Technique of the present invention comprises relevant device and construction method, discharges the uncontrolled problem that causes earth heaving, and discarded slurry is carried out to processed, to guarantee that construction quality reduces environment pollution thereby object is to solve unnecessary mud.
As shown in Figure 1, high pressure jet grouting system of the present invention comprises:
High pressure cement stock pump sending component 1, the mud liquid of mixing for high pressure pumping system;
Air ejection assemblies 2, carries when whitewashing compressed air to form air jet stream;
High-pressure hydraulic pump sending component 3, forms water under high pressure during for plasma discharge;
Churning plasma discharge assembly 4, for spraying the cement grout of being protected by air jet stream to destroy the soil body in the time whitewashing, and the water under high pressure that ejection is formed by high-pressure hydraulic pump sending component in the time of plasma discharge is to discharge unnecessary cement grout;
Plasma discharge processing components 5, for reclaiming the unnecessary cement grout that churning plasma discharge assembly discharges and recycling processing;
Monitor component 6, receive by signal transmssion line the detection signal that high pressure cement stock pump sending component, air ejection assemblies, high-pressure hydraulic pump sending component and churning plasma discharge assembly send, specifically comprise one in flow signal and pressure sensor signal or their combination, and respectively detection signal is exported to corresponding feedback command, to control in real time the start of above-mentioned each assembly.
Below for the comparatively preferred structure of high pressure jet grouting system of the present invention is set:
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.
In conjunction with Fig. 5, in churning plasma discharge assembly 4 and air deflector 7 is interior all arranges and comprise: 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 for the monitor channel of signal transmission.
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 at respectively on slip casting passage, and cement paste flow meter 12 is connected with technological parameter monitor 60 by signal transmssion line 8 respectively 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, water under high pressure flow meter 32, high-pressure hydraulic pump 34 and water under high pressure pressure sensor 36.
Wherein, water tank 30 is connected with high-pressure hydraulic pump 34 by low-pressure water passage, water under high pressure flow meter 32, high-pressure hydraulic pump 34 and water under high pressure pressure sensor 36 are arranged at respectively on low-pressure water passage and water under high pressure passage 447, and water under high pressure pressure sensor 36 is connected with technological parameter monitor 60 by signal transmssion line 8 respectively with water under high pressure flow meter 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 conductings; Useless slurry processor 52 is connected with useless slurry case 50 by treatment channel 54.
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 44 conductings of churning drill bit, the upper end of churning drilling rod 42 is connected with air deflector 7 conductings, 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 shown in FIG., and according to sequencing from left to right in Fig. 4, is provided with successively the first linkage section 422, 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 in the first linkage section 422, after the second linkage section 426 is connected in and connects stage casing 424, after air deflector 7 is connected in 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 for connecting the drill bit linkage section of churning drilling rod 42.
Wherein, according to sequencing from left to right in Fig. 6, after plasma discharge section is connected in whitewashing section, after drill bit linkage section is connected in plasma discharge section.
In Fig. 6, jet channel 442 and whitewashing passage 441 that whitewashing section is provided with whitewashing section body, is arranged at the gas slurry coaxial nozzle 440 of whitewashing section body 4 sidewalls and is connected with 440 conductings of gas slurry coaxial nozzle respectively.
In Fig. 6, plasma discharge section is provided with plasma discharge section sidewall, is opened in the plasma discharge mouth 448 of plasma discharge section sidewall, is arranged at water under high pressure passage 447 and plasma discharge passage 449 in plasma discharge section.
449 conductings of plasma discharge passage, 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.447 conductings of water under high pressure passage are to plasma discharge mouth 448 times, and connect water spout.
Sensing drive member comprises double rod cylinder 445, displacement transducer 444 and ground internal pressure detecting sensor 443.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 ground internal pressure detecting sensor 443, ground internal pressure detecting sensor 443 by signal transmssion line 8 be connected with technological parameter monitor 60.After gathering, the signal transmssion line 8 being connected with each sensor is merged into multi cord.
Completing after above structure assembling, is below the implementation process of high pressure jet grouting system of the present invention:
In conjunction with Fig. 2 and Fig. 3, first take out slurry process:
After assembling, be placed in the good cement hardener slurries of mixing in storage slurry device 10, high-pressure injection pump 14 is receiving taking out after slurry enabling signal that technological parameter monitor 60 sends, cement hardener slurries are extracted to slip casting passage, and the cement paste flow meter 12 of flowing through, form the cement grout with certain flow and pressure.Cement grout flow through grouting pressure sensor 16 and air deflector 7, enter 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 slurries pressure signal, and technological parameter monitor 60 constantly receives slurry flow signal and slurries pressure signal, to realize the real-time monitoring to taking out slurry.
In conjunction with Fig. 3 to Fig. 6, spray afterwards slip casting process:
When 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, formation has the Compressed Gas 24 of certain flow and pressure, and entering compressed air channel, Compressed Gas 24 enters 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.
Cement grout and Compressed Gas 24 enter after churning drilling rod 42; whitewashing passage 441 in churning drill bit 44 and jet channel 442 respectively; after starching coaxial nozzle 440 by gas at a high speed, also together spray the high pressure cement slurries 18 of protecting to be formed with Compressed Gas 24.These high pressure cement slurries 18 destroy the soil body, and constantly, in destructive process, churning drill bit 44 rotation limits, limit promote, and cement grout and the soil body are fully uniformly mixed, and form the cement-soil column induration of certain diameter in soil.And the verticality of churning drilling rod 42, rotating speed and hoisting velocity have demonstration on the operation board 462 of jet drill rig 46, and can adjust control.
In conjunction with Fig. 2 to Fig. 6, then carry out plasma discharge process:
In the process promoting on churning drill bit 44 rotation limits, limit, 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 water under high pressure flow meter 32, high-pressure hydraulic pump 36, forms the water under high pressure with certain flow.Water under high pressure, by water under high pressure pressure sensor 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, makes the unnecessary mud that churning produces suck 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 storages.
In this process, unnecessary mud discharge rate number, can cause the ground internal pressure fluctuation around of churning drill bit, therefore, particularly important.The amount of plasma discharge is sent ground internal pressure signal by ground internal pressure detecting sensor 444, so that in technological parameter monitor 60, shows and regulation and control.When local internal pressure value is less than setting value, technological parameter monitor 60, by controlling double rod cylinder 445, moves right plasma discharge valve 446, to reduce the size of opening of plasma discharge mouth 448, to reduce soakage and the plasma discharge amount of unnecessary mud, thereby make ground internal pressure value approach setting value; Otherwise local internal pressure value is greater than when setting value, increase the flow of water under high pressure or increase the size of opening of plasma discharge mouth 448, will increase soakage and the plasma discharge amount of unnecessary mud, thereby being approached, ground internal pressure value sets value.
With this, realize ground internal pressure controllable function.
Shown in Fig. 2, the slurry that finally gives up is processed:
The discarded slurry of interim storage in useless slurry case 50, sends into useless slurry processor 52 and dewaters, and forms clear water and dregs, and clear water can reuse, and dregs moisture content, can be directly with a cubic metre of earth car outward transport between 34% and 43%.The dehydrating amount of mud can reach 2/3, reaches the zero-emission of high pressure jet grouting construction discarded slurry, has avoided past high pressure jet grouting construction speed to be subject to the impact of mud emission.
As shown in Figure 7, high pressure jet grouting construction method of the present invention mainly comprises:
Step S1, transfer assembling churning plasma discharge assembly 4 location;
Step S2, installs air deflector 7 and is connected with 4 conductings of churning plasma discharge assembly;
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, installs monitor component 6 and is connected with each device in step S3 by signal transmssion line 8;
Step S5, sprays slip casting, and progressively promotes churning plasma discharge assembly 4;
Step S6, by the monitor component 6 whole injection slip casting process of monitoring in real time;
Step S7, injection slip casting is complete, and each assembly and air deflector 7 are cleaned.
Comparatively preferred, can carry out following further enforcement:
Before step S1, increase the step of prebored hole, and increase the step that each assembly in step S3 is debugged.
Whole injection slip casting process in step S6 comprises: spray slip casting process and plasma discharge process.
After step S6, also comprise by plasma discharge processing components 5 and give up and starch the step of processing.
Be below the process that practices of construction technology method of the present invention:
First, carry out prebored hole.
Utilize general geology to bore spray rig 46, on the high pressure jet grouting construction location of design, hole and reach 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 that bores spray rig 46 connects, electrical wiring, control box access power supply etc.
Again, carry out the debugging of churning relevant device.
The grout mixer of automatic weighing and material loading, storage slurry device 10, high-pressure injection pump 14, high-pressure hydraulic pump 36 work well with air compressor 20 hot-line tests, and meet the requirements of running parameter.
Afterwards, churning drill bit 44, churning drilling rod 42 are installed, and transfer to desired depth.
Churning drill bit 44, churning drilling rod 42 are installed section by section, and connect ground internal pressure detecting sensor 443 and signal transmssion line 8 in churning drill bit 44, after completing, transfer to desired depth.
Then, air deflector 7 is installed, the line pipe of going forward side by side road connects.
Further 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 and be 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 be monitored each parameters of construction technology value, and according to churning drill bit 42 ground, the place internal pressures that record, adjusts plasma discharge mouth size and water under high pressure flow, and ground internal pressure is controlled in scope of design.In the time that 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 processing simultaneously.
Ejection water under high pressure makes plasma discharge mouth produce pressure differential, makes the unnecessary mud that churning produces suck 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 storages.
Finally, slip casting is complete, exits and bores spray drilling rod 44.
Until rotary jet grouting finishes, 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 to position, aperture.
After rotary jet grouting, rinse related device, jet drill rig 46 moves to the rotary-spraying construction of next position, hole.Open jetting machine, with grouting pipe in clear water flushing churning drilling rod, then jet drill rig 46 is displaced to position, next mortar depositing construction hole, in order to the high pressure jet grouting construction of next position, hole.
In high pressure jet grouting work progress, the work for the treatment of that the discarded slurry of discharging is carried out in time.
The discarded slurry of interim storage in useless slurry case 50, sends into useless slurry processor 52 and dewaters, and forms clear water and dregs, and clear water can reuse, and dregs moisture content, can be directly with a cubic metre of earth car outward transport between 34% and 43%.
Complete after high pressure jet grouting system of the present invention setting and implementation method, reflect following beneficial effect:
1) spray verticality, rotating speed and the hoisting velocity of in slip casting process, boring spray drilling rod 42 by the joystick control 462 of jet drill rig 46 effectively to control to adjust;
2) by setting up inductor and connect monitor component 6 real-time monitoring in churning drill bit 44, spray the plasma discharge amount in slip casting process with effective ACTIVE CONTROL, impel unnecessary mud successfully to discharge;
3) by monitor component 6 process of monitoring in real time, to guarantee ground internal pressure balance and soil stabilization, avoid earth heaving phenomenon;
4), by setting and the enforcement of churning plasma discharge assembly 4, to guarantee the diameter of grouting pile-forming, guarantee construction quality and progress;
5) by useless slurry processing components 5 is set, useless slurry is dewatered and form dregs, reduce the pollution of construction environment.
Below embodiment has been described in detail the present invention 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.Thereby some details in embodiment should not form limitation of the invention, the present invention by the scope defining using appended claims as protection domain.
Claims (10)
1. ground internal pressure is controlled and without the high pressure jet grouting system of mud emission, it is characterized in that, comprising:
High pressure cement stock pump sending component, the mud liquid of mixing for high pressure pumping system;
Air ejection assemblies, carries when whitewashing compressed air to form air jet stream;
High-pressure hydraulic pump sending component, forms water under high pressure during for plasma discharge;
Churning plasma discharge assembly, for spraying the mud liquid of being protected by described air jet stream to destroy the soil body in the time whitewashing, and the described water under high pressure that ejection is formed by described high-pressure hydraulic pump sending component in the time of plasma discharge is to discharge unnecessary cement grout;
Plasma discharge processing components, for reclaiming the described unnecessary cement grout that described churning plasma discharge assembly discharges and recycling processing;
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;
In described churning plasma discharge assembly and in described air deflector, be provided with: for the jet channel of whitewashing and whitewashing passage, for the water under high pressure passage of plasma discharge and plasma discharge passage and for the monitor channel of signal transmission;
Monitor component, receive by signal transmssion line 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, and export corresponding feedback command according to described detection signal respectively, to control in real time the start of above-mentioned each assembly.
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 the conducting of described whitewashing passage by slip casting passage;
Described cement paste flow meter, described high-pressure injection pump and described grouting pressure sensor are arranged at respectively on described slip casting passage; Described cement paste flow meter is connected with described monitor component by described signal transmssion line respectively with described grouting pressure sensor, receives for described monitor component the slurries pressure signal that slurry flow signal that described cement paste flow meter sends and described grouting pressure sensor send;
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, water under high pressure flow meter, high-pressure hydraulic pump and water under high pressure pressure sensor;
Described water tank is connected with described high-pressure hydraulic pump by low-pressure water passage; Described water under high pressure flow meter and described water under high pressure pressure sensor are arranged at respectively on the low-pressure water passage and described water under high pressure passage of described high-pressure hydraulic pump both sides;
Described water under high pressure pressure sensor is not connected with described monitor component by described signal transmssion line with the score of described water under high pressure flow, receives for described monitor component the water under high pressure transducing signal that water under high pressure flow signal that described water under high pressure flow meter sends and described water under high pressure pressure sensor send;
Described plasma discharge processing components comprises: treatment channel, useless slurry case and useless slurry processor;
Described treatment channel is connected with the conducting of described plasma discharge passage, 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,
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 the first drilling rod link, and described air deflector is arranged at described the 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 in described whitewashing section, after described drill bit linkage section is connected in described plasma discharge section;
Described jet drill rig is arranged at needs the prebored hole of high pressure jet grouting position on ground, described churning drilling rod and described churning drill bit interconnect 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.
5. high pressure jet grouting system according to claim 4, is characterized in that,
The drilling rod shaft of described churning drilling rod comprises: three sections of linkage sections that connect successively;
In described three sections of linkage sections, include described jet channel, described whitewashing passage, described water under high pressure passage, described plasma discharge passage and described monitor channel.
6. high pressure jet grouting system according to claim 4, is characterized in that,
The whitewashing section of described churning drill bit comprises: whitewashing section sidewall, the described jet channel and the described whitewashing passage that are arranged at the gas slurry coaxial nozzle of described whitewashing section sidewall and are connected with the conducting of described gas slurry coaxial nozzle respectively;
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;
The conducting of described plasma discharge passage is under described plasma discharge mouth, and offers 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 by the keying of plasma discharge valve described in the control of described sensing drive member.
7. high pressure jet grouting system according to claim 6, is characterized in that,
Described plasma discharge section also comprises: described water under high pressure passage and water spout;
The conducting of described water under high pressure passage is to described plasma discharge mouth;
Described water spout is connected with the conducting of described water under high pressure passage;
Described sensing drive member comprises: double rod cylinder, displacement transducer and ground internal pressure detecting sensor;
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 described displacement transducer is arranged at the telescopic location of described the second piston rod;
Described displacement transducer is connected with described ground internal pressure detecting sensor;
Described ground internal pressure detecting sensor coordinates described monitor channel to be connected with described monitor component by described signal transmssion line, and the ground internal pressure detection signal sending for described ground of described monitor component reception internal pressure detecting sensor is also exported plasma discharge valve start instruction to described double rod cylinder accordingly.
8. the high pressure jet grouting construction method based on high pressure jet grouting system as described in any one in claim 1 to 7, is characterized in that, comprises the following steps:
Assemble churning plasma discharge assembly and position and transfer;
Air deflector is installed and is connected with the conducting of described churning plasma discharge assembly;
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;
Spray slip casting, and progressively promote churning plasma discharge assembly;
By the monitor component whole injection slip casting process of monitoring in real time;
Injection slip casting is complete, respectively each assembly and air deflector is cleaned.
9. high Pressure Grouting Construction Method according to claim 8, 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 the step of each Self-debugging;
Described whole injection slip casting process comprises: spray slip casting process and plasma discharge process;
After plasma discharge, also comprise by described plasma discharge processing components and give up and starch the step of processing.
10. high Pressure Grouting Construction Method according to claim 9, is characterized in that,
Described whitewashing process comprises:
Form high pressure cement slurries by described high pressure cement stock pump sending component; Form air jet stream by described air ejection assemblies; There are the high pressure cement slurries of air jet stream protection by described churning plasma discharge assembly ejection, and adjust in real time verticality, rotating speed and the hoisting velocity of described churning drilling rod;
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, the discarded slurry that enters described useless slurry processor is carried out to processed, to form clear water and dregs.
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| CN105257276A (en) * | 2015-11-18 | 2016-01-20 | 中国华冶科工集团有限公司 | Grouting monitoring system and monitoring method thereof |
| CN105350518A (en) * | 2015-10-27 | 2016-02-24 | 南阳市水利建筑勘测设计院 | Novel concrete grout spraying equipment |
| CN106381871A (en) * | 2016-08-31 | 2017-02-08 | 西安长庆科技工程有限责任公司 | Anchor cable secondary grouting control system and method |
| CN106759299A (en) * | 2017-02-26 | 2017-05-31 | 北京中岩大地科技股份有限公司 | A kind of controllable churning technique in stake footpath |
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| CN111058450A (en) * | 2019-12-31 | 2020-04-24 | 江苏省无锡探矿机械总厂有限公司 | Grouting control method, device and system |
| CN113062690A (en) * | 2021-03-31 | 2021-07-02 | 江苏省送变电有限公司 | High-pressure jet grouting drilling machine based on Internet of things and intelligent construction method thereof |
| ES2937336A1 (en) * | 2021-09-24 | 2023-03-27 | Terratest Group S L | PRESSURE INJECTION DRILLING SYSTEM (Machine-translation by Google Translate, not legally binding) |
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| CN105350518B (en) * | 2015-10-27 | 2018-01-23 | 南阳市水利建筑勘测设计院 | A kind of concrete spraying equipment |
| CN105257276A (en) * | 2015-11-18 | 2016-01-20 | 中国华冶科工集团有限公司 | Grouting monitoring system and monitoring method thereof |
| CN106381871A (en) * | 2016-08-31 | 2017-02-08 | 西安长庆科技工程有限责任公司 | Anchor cable secondary grouting control system and method |
| CN106759299A (en) * | 2017-02-26 | 2017-05-31 | 北京中岩大地科技股份有限公司 | A kind of controllable churning technique in stake footpath |
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| CN108661566A (en) * | 2018-07-18 | 2018-10-16 | 浙江省地矿建设有限公司 | A kind of RJP techniques and the general drill bit of MJS techniques and its construction technology |
| CN108661566B (en) * | 2018-07-18 | 2024-01-16 | 浙江省地矿建设有限公司 | RJP (reactive JP) process and MJS (MJS) process universal drill bit and construction process thereof |
| CN111058450A (en) * | 2019-12-31 | 2020-04-24 | 江苏省无锡探矿机械总厂有限公司 | Grouting control method, device and system |
| CN111058450B (en) * | 2019-12-31 | 2022-02-11 | 江苏省无锡探矿机械总厂有限公司 | Grouting control method, device and system |
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| ES2937336A1 (en) * | 2021-09-24 | 2023-03-27 | Terratest Group S L | PRESSURE INJECTION DRILLING SYSTEM (Machine-translation by Google Translate, not legally binding) |
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