CN101881173A - Synchronous grouting simulation test platform of shield tunneling machine - Google Patents
Synchronous grouting simulation test platform of shield tunneling machine Download PDFInfo
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- CN101881173A CN101881173A CN 201010134780 CN201010134780A CN101881173A CN 101881173 A CN101881173 A CN 101881173A CN 201010134780 CN201010134780 CN 201010134780 CN 201010134780 A CN201010134780 A CN 201010134780A CN 101881173 A CN101881173 A CN 101881173A
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Abstract
The invention relates to a synchronous grouting simulation test platform of a shield tunneling machine, comprising a soil tank, a simulation tube piece, a simulation shield tail, a propelling hydraulic cylinder, a guiding barrel, a transparent outer barrel, a soil pressure sensor, a camera and a grouting pump, wherein the axis of the guiding barrel is horizontally and fixedly connected to the left side wall of the soil tank, one end of the transparent outer barrel is coaxially and fixedly connected with the guiding barrel, the other end is fixedly connected with the right side wall of the soil tank, the transparent simulation tube piece is coaxially sleeved in the transparent outer barrel and is fixedly connected with the right side wall of the soil tank, the camera is arranged in an inner cavity of the simulation tube piece, the soil pressure sensor is arranged on the barrel wall of the simulation tube piece, the simulation shield tail is coaxially sleeved in the periphery of the simulation tube piece and can axially slide along the inner barrel wall of the guiding barrel and the outer barrel wall of the simulation tube piece, a grouting hole is arranged in the barrel wall of the simulation shield tail and is communicated with the grouting pump, and the propelling hydraulic cylinder can drive the simulation shield tail to do reciprocating motion. The invention can dynamically simulate and directly observe the whole process of synchronous grouting of the shield tunneling machine under different working conditions, thereby providing conditions for the test and the theoretical study of a synchronous grouting technique of the tunneling machine.
Description
Technical field:
The present invention relates to be used for the simulation test device of tunneling shield development machine construction, what be specifically related to is a kind of synchronous grouting simulation test platform of shield tunneling machine, belongs to the tunnel construction field of engineering technology.
Background technology:
For the construction of underground tunnel Study on Technology a lot of modes are arranged, as theory analysis etc., and test method also is a kind of very important scientific method, for example studies characteristic, the characteristic of the soil body and interaction relationship machine soil between of shield excavation machine in the construction of underground tunnel process by the method for simulated test.At present more domestic and international enterprises, scientific research institution and university all set up relevant laboratory and carry out this specific engineering simulation test with the corresponding simulator stand of design-build, have just developed large shield tunnelling analogue test platform to carry out the shield excavation machine construction test as Shanghai Tunnel Engineering stock Co., Ltd.
Adopting the shield excavation machine drivage method to carry out in the work progress of subterranean tunnel, the head of one side shield excavation machine is the soil layer driving forwards, within the shield driving drive end unit, finish the lining-up in tunnel on one side with the moulding section of jurisdiction, when shield excavation machine was pushed ahead, the shield tail was just preceding simultaneously and then stayed the building gap between the soil body and section of jurisdiction lining-up.For distortion and the surface settlement of controlling surrounding soil effectively, guarantee the stable of tunnel, at this moment after will adopting slurries to inject the section of jurisdiction wall equably synchronously according to predetermined pressure and grouting amount, the filling shield excavation machine advances the building gap that produces at shield tail rear side, promptly carries out synchronous grouting.Synchronous grouting is one important procedure in the construction of tunneling shield development machine, it be reduce the section of jurisdiction skew, prevent soil deformation, the important means of controlling ground settlement and the distortion of minimizing tunnel later stage, so synchronous grouting should reach in time, the requirement of even, capacity.The quality of synchronous grouting is subjected to all multifactor impacts such as slurries kind, grouting pressure, flow rate of grouting, how to adopt suitable technological parameter to reach best synchronous grouting effect, it is the important topic in the tunneling shield technical field of construction, this important function for of research is not enough by theoretical analysis method merely only, and experimental study is the requisite important method that solves this technical task.
The data that retrieves synchronous grouting simulation test device in the relevant shield-tunneling construction is not arranged in the prior art as yet.We have found Chinese patent ZL200810162251.4 " a kind of novel slurry filling imitation device " for slurry filling imitation device, the described slurry filling imitation device of this patent mainly comprises air compressor, pressure regulator valve, pressure vessel, test mould etc., grouting serous fluid is placed in the pressure vessel, the pressure vessel top is connected with air compressor, go into air and slurries are extruded also injection test mould to vessel internal pressure by air compressor, simulation test procedure can be regulated grouting pressure by pressure regulator valve, this slurry filling imitation device can only simulating chamber in the compaction grouting and the fracture grouting process of the various soil bodys.
For the shield excavation machine synchronous grouting simulation test, above-mentioned existing slurry filling imitation device has following deficiency:
1, can't simulate shield excavation machine synchronous grouting process---this slurry filling imitation device can only simulating chamber in the compaction grouting and the fracture grouting process of the various soil bodys, its test mould can't be simulated the synchronous grouting process of shield excavation machine.
2, simulated test facility can not be controlled flow rate of grouting---and this slip casting analog machine extrudes slurries by air compressor, it can only control grouting pressure by pressure regulator valve, and do not have corresponding device thereof to control flow rate of grouting, thereby can't investigate the influence of flow rate of grouting to the synchronous grouting effect.
Summary of the invention:
Technical problem to be solved by this invention is to overcome the defective that existing slurry filling imitation device can't carry out the shield excavation machine synchronous grouting simulation test, a kind of synchronous grouting simulation test platform of shield tunneling machine is provided, it can simulate the process of carrying out synchronous grouting in the shield excavation machine progradation at the shield tail, simultaneously can simulate process conditions such as different fltting speeds, flow rate of grouting, grouting pressure, thus study between each technological parameter correlation and to the influence of slip casting effect.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of synchronous grouting simulation test platform of shield tunneling machine, it comprises native case, simulation section of jurisdiction, simulation shield tail, PF cylinder pressure, orientation barrel, transparent outer bucket, soil pressure case, camera and grouting pump; Described native case is the square box structural member, is placed on more than the ground, and the soil body can filling be tested in its inside; Described orientation barrel is a pipe shape member, is arranged to its axis horizontal among this soil case, and an end of this orientation barrel is fixedlyed connected with the left side wall of described native case; Described transparent outer bucket be a pipe shape member, and the one end is fixedly connected with the other end of described orientation barrel coaxially, and other end of this transparent outer bucket is fixedlyed connected with the right side wall of described native case; Described simulation section of jurisdiction is transparent cylindrical structural member, it is placed among the transparent outer bucket coaxially, one end of this simulation section of jurisdiction is fixedlyed connected with the right side wall of described native case, and described camera is arranged in the inner chamber of simulation section of jurisdiction, and described soil pressure case is arranged on the barrel of simulation section of jurisdiction; Described simulation shield tail is the cylindrical structural member of end sealing, it is arranged between described orientation barrel and the simulation section of jurisdiction coaxially, the barrel of this simulation shield tail is placed on the periphery of simulation section of jurisdiction, and can carry out axial slip along the inner tubal wall of orientation barrel and the outer tube wall of simulation section of jurisdiction, be provided with the injected hole that connects these barrel front and back in the barrel of described simulation shield tail; Described grouting pump is a screw metering pump, and it is communicated with this injected hole; Described PF cylinder pressure is arranged on the described native case coaxially with simulation shield tail, and its cylinder body is fixed on the left side wall of described native case, and the top of its cylinder bar is fixed on the blind end of simulation shield tail, and this PF cylinder pressure can drive simulation shield tail and move back and forth.
Synchronous grouting simulation test platform of shield tunneling machine of the present invention also comprises left tube connector, right tube connector, left end cap and right end cap; Described left tube connector and right tube connector are short tube shape member, and this left side tube connector and right tube connector transverse uniaxial ground connect respectively and are fixed on the left side wall and right side wall of described native case; Described left end cap fixed cap places the outer end of this left side tube connector, and the cylinder body of described PF cylinder pressure places and is fixed on this left end cap, and described orientation barrel is fixedlyed connected with the inner of this left side tube connector coaxially; Described right end cap fixed cap places the outer end of this right side tube connector, and an end of described simulation section of jurisdiction is fixedlyed connected with this right end cap, and described transparent outer bucket is fixedlyed connected with the inner of this right side tube connector coaxially; Be provided with sealing ring between described simulation shield tail and the simulation section of jurisdiction, the manufactured materials of described transparent outer bucket and simulation section of jurisdiction is an organic glass, the quantity of described soil pressure case and the quantity of camera are a plurality of, the quantity of described injected hole is a plurality of, and its circumference along described simulation shield tail pipe wall evenly distributes.
Compare with existing slurry filling imitation device, the present invention has obtained following beneficial technical effects:
1, the present invention is provided with the simulation section of jurisdiction of simulation tunnel lining-up, simulation shield tail and injected hole, the grouting pump of simulation synchronous grouting and the PF cylinder pressure that the simulation shield excavation machine advances of simulation shield driving drive end unit, thereby realized in the shield excavation machine progradation simulation to shield tail rear side building gap synchronous grouting process, and be the simulation of a dynamic process, and the simulation of nonstatic.
2, the present invention is provided with camera so that the synchronous grouting overall process is taken, thereby can observe the flow phenomenon of slurries in the synchronous grouting process more intuitively, for the mechanism research of synchronous grouting provides more advanced equipment.
3, the present invention is provided with soil pressure case to measure the grouting pressure of slurries, and set grouting pump is a screw metering pump, it can regulate the flow that injects slurries, simultaneously the PF cylinder pressure can realize simulating the different fltting speeds of shield tail, thereby provides condition for the pressure in the research slurries process of setting changes and studies technological parameters such as different fltting speeds, grouting pressure, flow rate of grouting to the influence of synchronous grouting effect.
4, the present invention can realize the synchronous grouting simulation test of two kinds of operating modes, i.e. synchronous grouting simulation test and the synchronous grouting simulation test in fixed building gap of shield excavation machine in soil by the transparent outer bucket of dismounting.
In a word, the overall process of synchronous grouting when synchronous grouting simulation test platform of shield tunneling machine of the present invention can dynamically be simulated the shield excavation machine propelling, can directly observe simultaneously the experimental phenomena of simulation synchronous grouting process, and realized simulation by regulating and changing test conditions, for the research different technical parameters provides condition to the influence of synchronous grouting effect to different operating mode synchronous grouting processes.Result of the test of the present invention can provide test basis and data reference for the theoretical research of shield excavation machine synchronous grouting technology.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of A portion among Fig. 1.
The specific embodiment:
Below in conjunction with specific embodiments and the drawings the present invention is described in further detail.
See also Fig. 1 structural representation of the present invention, the diagram synchronous grouting simulation test platform of shield tunneling machine comprises native case 9, left tube connector 91, right tube connector 92, left end cap 1, right end cap 7, simulation section of jurisdiction 5, simulation shield tail 3, PF cylinder pressure 8, orientation barrel 2, transparent outer bucket 4, soil pressure case 11, camera 6 and grouting pump 10.
Described native case 9 is the square box structural member of steel, is placed on more than the ground, and this soil case 9 is of a size of long 2.5m, wide 2.5m, dark 3m, and its inside can the filling test soil body.Described left tube connector 91 and right tube connector 92 are the short tube shape member of steel, and this left side tube connector 91 and right tube connector 92 are weldingly fixed on respectively on the left side wall and right side wall of described native case 9 coaxially, and the sidewall at lateral direction penetrating place separately.Described left end cap 1 lid is put and by the outer end of bolt in described left tube connector 91, and described right end cap 7 lids are put and by the outer end of bolt in described right tube connector 92.
The steel pipe shape member that described orientation barrel 2 is a both ends open, be arranged to its axis horizontal among the described native case 9, described orientation barrel 2 is bolted to connection with the inner of described left tube connector 91 (stretching into the end in the native case 9) coaxially, and promptly an end (left end) of orientation barrel 2 is fixedlyed connected with the left side wall of described native case 9 by left tube connector 91.Described transparent outer bucket 4 is the pipe shape member of both ends open, its manufactured materials is an organic glass, one end (left end) of this transparent outer bucket 4 joins by bolt with the other end (right-hand member) of described orientation barrel 2, and both are flatly coaxial, the other end (right-hand member) of this transparent outer bucket 4 is bolted to connection with the inner of described right tube connector 92 (stretching into the end in the native case 9), and coaxial with it, promptly transparent outer bucket 4 is fixedlyed connected with the right side wall of described native case 9 by right tube connector 92.So described left tube connector 91, orientation barrel 2, transparent outer bucket 4 and right tube connector 92 couple together to axis horizontal successively, form a horizontal circular channel in native case 9, with the driving path of simulate formation shield excavation machine.
Described simulation section of jurisdiction 5 is transparent cylindrical structural member, and in order to the simulation tunnel lining-up, its manufactured materials is an organic glass; This simulation section of jurisdiction 5 is placed in the inner chamber of described transparent outer bucket 4 coaxially, and an end (right-hand member) of simulation section of jurisdiction 5 is fixedlyed connected with described right end cap 7 by bolt, and then fixedlys connected with the right side wall of described native case 9 by right tube connector 92 again.Described camera 6 is arranged in the inner chamber of this simulation section of jurisdiction 5, takes in order to the process of the test to synchronous grouting from inside to outside, and the quantity of this camera 6 has a plurality of, all is connected with testing circuit in order to record data.See also Fig. 2 structure partial enlarged drawing of the present invention again, described soil pressure case 11 is arranged on the barrel of this simulation section of jurisdiction 5, in order to measure the pressure in grouting pressure and the slurries later stage process of setting, the quantity of this soil pressure case 11 also has a plurality of, all is connected with testing circuit in order to record data.
Described simulation shield tail 3 is the steel cylindrical structural member of end sealing, and in order to the afterbody of simulation shield excavation machine, it is arranged between described orientation barrel 2 and the simulation section of jurisdiction 5 coaxially; The barrel of this simulation shield tail 3 is placed on the periphery of simulation section of jurisdiction 5, and can carry out axial slip along the inner tubal wall of orientation barrel 2 and the outer tube wall of simulation section of jurisdiction 5.See also Fig. 2, be provided with a plurality of injected holes 31 in the barrel of described simulation shield tail 3, this injected hole 31 connects rear end to this barrel by the front end of simulation shield tail 3 barrels always, be used for injecting slurries to the gap at simulation shield tail 3 rears, these a plurality of injected holes 31 evenly distribute along the circumferential section of described simulation shield tail 3 barrels.Be provided with sealing ring 32 between described simulation shield tail 3 and the simulation section of jurisdiction 5, in order to simulate the effect of true shield excavation machine shield tail sealing.
See also Fig. 1 again, described grouting pump 10 is a screw metering pump, can regulate the flow of slurries, and it is communicated with described a plurality of injected holes 31, in order to synchronous injection slurries.
Described PF cylinder pressure 8 is arranged on the described native case 9 coaxially with simulation shield tail 3, is to simulate the power that shield tail 3 advances, and it can drive simulation shield tail 3 and move back and forth within the orientation barrel 2 and outside the simulation section of jurisdiction 5.The cylinder body of this PF cylinder pressure 8 laterally is placed through the central authorities of described left end cap 1, and by being bolted on the left end cap 1, and then be fixed on the left side wall of described native case 9 by left tube connector 91; , move to simulate the driving motion of shield machine thereby can drive simulation shield tail 3 by the PF cylinder pressure 8 that hydraulic system drives on the blind end of simulation shield tail 3 by bolt on the top of these PF cylinder pressure 8 cylinder bars.
Using before synchronous grouting simulation test platform of shield tunneling machine of the present invention tests, at first want checkout facility whether normal, and will simulate shield tail 3 and return to initial position, promptly the cylinder bar of PF cylinder pressure 8 should be in elongation state.The process that the present invention tests can be consulted Fig. 1, the cylinder bar of PF cylinder pressure 8 is with certain speed retraction after on-test, and drive the 3 realization propellings of simulation shield tail, with the driving of this simulate formation shield machine, the fltting speed of simulation shield tail 3 can be regulated by PF cylinder pressure 8; Meanwhile, grouting pump 10 carries out synchronous grouting with the injection speed that is complementary with the simulation shield tail 3 fltting speeds injected hole 31 by simulation shield tail 3 to the building gap of rear side, the soil pressure case 11 that simulate on the section of jurisdiction 5 this moment can be measured grouting pressure, because grouting pump 10 is screw metering pumps, therefore the experimenter can regulate flow rate of grouting by grouting pump 10, thereby testing crew can be regulated PF cylinder pressure 8 and grouting pump 10 to realize the simulation to shield excavation machine synchronous grouting under the different operating modes; In to shield excavation machine synchronous grouting process simulation, the camera 6 in the simulation section of jurisdiction 5 sees through organic glass the flow process of slurries in the synchronous grouting is taken; When PF cylinder pressure 8 cylinder bars were withdrawn fully, simulation shield tail 3 advanced to finish to test and finishes.
Synchronous grouting simulation test platform of shield tunneling machine of the present invention can be realized the synchronous grouting test of two kinds of operating modes: when loading onto transparent outer barrel 4, the present invention can be implemented in the synchronous grouting simulation test in the fixed building gap, when unload transparent outside bucket 4 and native case 9 in during the filling test soil body, the present invention can be implemented in the interior synchronous grouting simulation test of soil.
By the shield excavation machine synchronous grouting test that the present invention carried out, the technician can observe with study different operating modes under the synchronous grouting process of shield machine, and study of the influence of different technical parameters such as fltting speed, flow rate of grouting, grouting pressure to the synchronous grouting effect, utilize the present invention to carry out the resulting result of simulated test test basis and data reference can be provided for the theoretical research of shield excavation machine synchronous grouting technology and mechanism.
Claims (6)
1. synchronous grouting simulation test platform of shield tunneling machine is characterized in that: described analogue test platform comprises native case, simulation section of jurisdiction, simulation shield tail, PF cylinder pressure, orientation barrel, transparent outer bucket, soil pressure case, camera and grouting pump; Described native case is the square box structural member, is placed on more than the ground, and the soil body can filling be tested in its inside; Described orientation barrel is a pipe shape member, is arranged to its axis horizontal among this soil case, and an end of this orientation barrel is fixedlyed connected with the left side wall of described native case; Described transparent outer bucket be a pipe shape member, and the one end is fixedly connected with the other end of described orientation barrel coaxially, and other end of this transparent outer bucket is fixedlyed connected with the right side wall of described native case; Described simulation section of jurisdiction is transparent cylindrical structural member, it is placed among the transparent outer bucket coaxially, one end of this simulation section of jurisdiction is fixedlyed connected with the right side wall of described native case, and described camera is arranged in the inner chamber of simulation section of jurisdiction, and described soil pressure case is arranged on the barrel of simulation section of jurisdiction; Described simulation shield tail is the cylindrical structural member of end sealing, it is arranged between described orientation barrel and the simulation section of jurisdiction coaxially, the barrel of this simulation shield tail is placed on the periphery of simulation section of jurisdiction, and can carry out axial slip along the inner tubal wall of orientation barrel and the outer tube wall of simulation section of jurisdiction, be provided with the injected hole that connects these barrel front and back in the barrel of described simulation shield tail; Described grouting pump is a screw metering pump, and it is communicated with this injected hole; Described PF cylinder pressure is arranged on the described native case coaxially with simulation shield tail, and its cylinder body is fixed on the left side wall of described native case, and the top of its cylinder bar is fixed on the blind end of simulation shield tail, and this PF cylinder pressure can drive simulation shield tail and move back and forth.
2. synchronous grouting simulation test platform of shield tunneling machine as claimed in claim 1 is characterized in that: described analogue test platform also comprises left tube connector, right tube connector, left end cap and right end cap; Described left tube connector and right tube connector are short tube shape member, and this left side tube connector and right tube connector transverse uniaxial ground connect respectively and are fixed on the left side wall and right side wall of described native case; Described left end cap fixed cap places the outer end of this left side tube connector, and the cylinder body of described PF cylinder pressure places and is fixed on this left end cap, and described orientation barrel is fixedlyed connected with the inner of this left side tube connector coaxially; Described right end cap fixed cap places the outer end of this right side tube connector, and an end of described simulation section of jurisdiction is fixedlyed connected with this right end cap, and described transparent outer bucket is fixedlyed connected with the inner of this right side tube connector coaxially.
3. synchronous grouting simulation test platform of shield tunneling machine as claimed in claim 1 or 2 is characterized in that: be provided with sealing ring between described simulation shield tail and the simulation section of jurisdiction.
4. synchronous grouting simulation test platform of shield tunneling machine as claimed in claim 1 or 2 is characterized in that: the manufactured materials of described transparent outer bucket and simulation section of jurisdiction is an organic glass.
5. synchronous grouting simulation test platform of shield tunneling machine as claimed in claim 1 or 2 is characterized in that: the quantity of described soil pressure case and the quantity of camera are a plurality of.
6. synchronous grouting simulation test platform of shield tunneling machine as claimed in claim 1 or 2 is characterized in that: the quantity of described injected hole is a plurality of, and its circumference along described simulation shield tail pipe wall evenly distributes.
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| CN2010101347800A CN101881173B (en) | 2010-03-29 | 2010-03-29 | Synchronous grouting simulation test platform of shield tunneling machine |
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