CN102221474A - Muddy water balance type shield simulation testing system - Google Patents

Muddy water balance type shield simulation testing system Download PDF

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Publication number
CN102221474A
CN102221474A CN2011100476692A CN201110047669A CN102221474A CN 102221474 A CN102221474 A CN 102221474A CN 2011100476692 A CN2011100476692 A CN 2011100476692A CN 201110047669 A CN201110047669 A CN 201110047669A CN 102221474 A CN102221474 A CN 102221474A
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CN
China
Prior art keywords
shield machine
casing
muddy water
soil
links
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CN2011100476692A
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Chinese (zh)
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CN102221474B (en
Inventor
何川
方勇
夏炜洋
汪波
齐春
吴林
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西南交通大学
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Priority to CN 201110047669 priority Critical patent/CN102221474B/en
Publication of CN102221474A publication Critical patent/CN102221474A/en
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Publication of CN102221474B publication Critical patent/CN102221474B/en

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Abstract

The invention relates to a muddy water balance type shield simulation testing system. In the structure of the system, a model box for holding soil is fixed on a base; a refrigeration freezing device is communicated with a freezing pipe in the model box; the front part of a shield machine enters the model box through a guide sleeve on the side of the model box; a cutter disk at the front part of the shield machine is connected with the output shaft of a gearbox of a hydraulic power system through a main shaft; jacks at the left and right sides of the shield machine are connected between the model box and the gearbox; a space between a partition plate behind the cutter disk of the shield machine and the cutter disk forms a muddy water cabin; and an injection pipe of a muddy water pot, which is connected with an air pressure boosting device, penetrates into the shield machine from the tail part of the shell of the shield machine. The system provided by the invention can simulate the tunneling process of the muddy water shield machine in a submerged tunnel construction with high water pressure and can synchronously record soil pressure, water pressure, displacement and the tunneling parameters of the shield machine, thereby finding out and analyzing the mechanism and conditions of muddy water pressure balance country rock and providing more reliable experiment basis for submerged tunnel construction and the design of a muddy water shield machine.

Description

A kind of slurry-water balance type shield simulation test system
Technical field
The present invention relates to a kind of slurry-water balance type shield simulation test system.
Background technology
Proportion will be increasing in the field of traffic of China for submerged tunnel version, and the slurry-water balance type shield machine is the major equipment of submerged tunnel shield construction.The slurry shield machine is under water during constructing tunnel, by in the muddy water cabin, forming the muddy water loop of specified pressure, concentration, form the mud film at cutterhead excavation face, and the back pressure differential remains in the scope of setting in face of making excavation, shield machine can be tunneled smoothly at the underwater environment of high hydraulic pressure, and the balance mechanism of cutterhead excavation face cutting mud film has significant effects to the stable and dynamic tunneling process of excavation face.By tunneling process is simulated, shield machine, the soil body and phreatic correlation parameter are tested, can determine the mud and water balance mechanism of shield machine, determine the relation of influencing each other between shield machine in the tunneling process and the excavation face balance, for the design and the construction of shield tunnel under water provides reference, for the type selecting of shield machine provides foundation.
More representative both at home and abroad at present shield structure testing equipment device has: the miniature slurry-water balance type shield machine simulation test device of Waseda University's development, utilize this micro-test device that the driving mechanism aspect of early stage slurry-water balance type shield machine is studied, but its simulation to the slurry-water balance type shield machine is too simple, a lot of conditions all can't be set, and especially tunneling process and the balance mechanism for (100 meters heads) slurry shield machine under the higher condition of hydraulic pressure is difficult to research.
Summary of the invention
Purpose of the present invention just provides a kind of slurry-water balance type shield simulation test system, the tunneling process that adopts the slurry shield machine in the submerged tunnel construction of high hydraulic pressure can be simulated by this system, and the boring parameter of synchronous recording soil pressure, hydraulic pressure, displacement and shield machine, thereby find out and analyze mechanism and condition that muddy water flattens the weighing apparatus country rock, for the construction of submerged tunnel and the design of slurry shield machine provide more reliable experimental evidence.
The present invention realizes that the technical scheme that its goal of the invention adopts is: a kind of slurry-water balance type shield simulation test system, and it consists of:
Place the Soil Model case and be fixed on the base, the interior freezing pipe of refrigeration freezing plant and model casing is communicated with;
The front portion of shield machine enters model casing through the orienting sleeve on the model casing side, and the cutterhead of shield machine front portion links to each other by the output shaft of main shaft with the gear case of hydraulic power system; Be positioned at the lifting jack of the shield machine left and right sides, be connected between model casing and the gear case;
The cutterhead rear of shield machine is provided with dividing plate, and the space between dividing plate and the cutterhead constitutes the muddy water cabin; The Grouting Pipe of the muddy water jar that links to each other with the air pressure pressue device penetrates shield machine inside at the afterbody of shield machine casing, and the end is fixed on the dividing plate; The muddy water cabin is stretched in the import of the soil output of bottom in the shield machine, and outlet links to each other with the sediment jar of shield machine lower rear; The sediment jar then links to each other with the muddy water jar by force pipe;
The top of model casing links to each other with the air pressure pressue device by forcing pipe;
The soil body in the model casing is embedded with temperature sensor, pore pressure gauge, displacement meter, soil pressure cell; Temperature sensor, pore pressure gauge, displacement meter, soil pressure cell all are connected with data collector.
The concrete principle of the present invention and the course of work are:
In placing the Soil Model case, place the soil body, with the simulation different surrounding rock by the ratio of similitude configuration.The air pressure pressue device is pressed into model casing by the forcing pipe at model casing top with air pressure, and the control atmospheric pressure can be simulated the different ground water pressures that country rock bears.The oil cylinder turnover oil of control lifting jack by lifting jack driven gear case and the motion of whole shield machine, is realized retreating and tunneling of shield machine, and shield machine speed in the may command tunneling process; Hydraulic power system is by gear case, the rotation of main shaft drives cutterhead, the soil body in the cutting mould molding box simultaneously; The cutter of cutterhead can be adjusted according to different surrounding rock categories with aperture opening ratio.The air pressure pressue device is also exerted pressure to the muddy water jar simultaneously, make the muddy water in the muddy water jar in the muddy water cabin, pour into mud by Grouting Pipe, enter cutterhead place, shield machine the place ahead, when the knife cutting soil body with specific pressure, concentration, form the mud film, balance is excavated the stable of face; The soil body that cuts then together with mud, through cutterhead panel opening, enters bottom, muddy water cabin, again by the rotation of the screw axis in the soil output, promotes the soil body and moves backward, is drained in the sediment jar.Muddy water in the sediment jar is back in the muddy water jar again, forms circulating of muddy water.The driving of slurry shield machine and the simulation of working angles have so promptly been realized.
When waiting to tunnel certain position, stop the running of shield machine and cutterhead, start the refrigeration freezing plant, the freezing pipe input liquid nitrogen in model casing freezes the mud film on country rock and the face of tool rapidly; Open country rock and mud film that model casing takes out frozen curing then; Thereby can obtain parameters such as the formation scope of mud film, thickness by the method for probing, cutting.
In process of the test, buried temperature sensor, pore pressure gauge, soil pressure cell and displacement meter in the model casing in advance underground, can test the correlation parameter of the soil body respectively: temperature sensor can be tested the freezing temperature of the mud film and the soil body; Pore pressure gauge is used to test the water pressure of the soil body, and compares with the data that add pneumatic shuttle; Soil pressure cell is used to test the soil pressure of excavation soil body periphery; Displacement meter is used for the vertical displacement of formation testing.In process of the test, note the boring parameter of each corresponding model shielding machine constantly simultaneously, comprise jack thrust, cutterhead rotating speed, soil output rotating speed, mud hydraulic pressure, mud amount etc.By analyzing the relation to draw these data and mud film shape, thickness; And then obtain the suitable boring parameter of slurry shield machine, to instruct the type parameter optimization of tunnel site operation and shield machine.
Compared with prior art, the invention has the beneficial effects as follows:
The simulation of the soil layer face of tool excavation of realization slurry shield machine that can be complete, mud membrane equilibrium excavation face, propelling, process such as be unearthed; Can simulate and measure in real time groundwater pressure, soil pressure, mud hydraulic pressure, mud amount, the shield machine driving thrust of the soil body, parameter conditions such as cutterhead rotating speed; And the mode by freezing dexterously, can observe the shape and the thickness of the face of tool mud film that forms under given conditions, and then can draw mechanism and the formation condition and the influence factor of mud and water balance, draw the suitable boring parameter of slurry shield machine, can provide more true and reliable experimental basis for the type parameter optimization of tunnel site operation and shield machine.
Air pressure pressue device of the present invention can apply the water pressure of 100 meters heads, model casing, muddy water jar, soil output, cutterhead etc. are metalwork and constitute, intensity is big, thereby can realize the simulation of the launching stress truly in tunnel under 100 meters heads, satisfy the constructing tunnel condition of most groundwater environment, the construction at scene is had directive significance widely.
The input shaft of above-mentioned gear case links to each other with the oil motor of hydraulic power system; The shared hydraulic reservoir of oil motor and lifting jack, the screw axis of soil output links to each other with micro-machine.
This dynamic structure and transfer mode can guarantee effective transmission of power, and control is accurately convenient, and its compact conformation, and volume is little.
Three sides that above-mentioned model casing is not connected with shield machine all have the side door hole, and the side door hole is connected with the side door lid by bolt; The top of model casing has the roof door hole, and the roof door hole is connected with the roof door lid by bolt.
After stopping test, the soil body freezes, looser a bolt and open side door lid and roof door lid like this, can observe and analyze the country rock soil body and mud film thickness thereof easily.
The inside surface of the orienting sleeve of above-mentioned model casing is provided with O-ring seal.
Can guarantee shield machine like this along orienting sleeve lengthwise movement smoothly, can effectively guarantee model casing and shield machine and extraneous sealing simultaneously again, make that the pressure in muddy water cabin and the model casing keeps constant.
The top of above-mentioned model casing is equipped with tensimeter; The top of muddy water jar also is equipped with tensimeter.
Tensimeter can be measured the actual pressure in model casing and the muddy water jar like this, thereby conveniently the output pressure of air pressure pressue device is proofreaied and correct.
The present invention is described in further detail below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Fig. 1 is the structural representation of facing of the embodiment of the invention.
Fig. 2 is the amplification sectional structure synoptic diagram of the model casing of the embodiment of the invention.
Embodiment
Fig. 1 illustrates, and a kind of embodiment of the present invention is, a kind of slurry-water balance type shield simulation test system, and its composition is:
Place Soil Model case 1 and be fixed on the base 2, refrigeration freezing plant 4 and model casing 1 interior freezing pipe 5 is communicated with;
The front portion of shield machine 6 enters model casing 1 through the orienting sleeve 7 on model casing 1 side, and the cutterhead 9 of shield machine 6 front portions links to each other with the output shaft of the gear case 12 of hydraulic power system 10 by main shaft 8; Be positioned at the lifting jack 11 of shield machine 6 left and right sides, be connected between model casing 1 and the gear case 12;
Cutterhead 9 rears of shield machine 6 are provided with dividing plate 31, and the space between dividing plate 31 and the cutterhead 9 constitutes the muddy water cabin; The Grouting Pipe 14 of the muddy water jar 13 that links to each other with the air pressure pressue device penetrates shield machine 6 inside at the afterbody of shield machine 6 casings, and the end is fixed on the dividing plate 31; The muddy water cabin is stretched in the import of the soil output 17 of bottom in the shield machine 6, and outlet links to each other with the sediment jar 18 of shield machine 6 lower rear; 18 in sediment jar passes through force pipe 37 and links to each other with muddy water jar 13;
The top of model casing 1 links to each other with the air pressure pressue device by forcing pipe 38;
Fig. 2 illustrates, and the soil body in the model casing 1 is embedded with temperature sensor 19, pore pressure gauge 20, displacement meter 21, soil pressure cell 22; Temperature sensor 19, pore pressure gauge 20, displacement meter 21, soil pressure cell 22 all are connected with data acquisition and control device.
Fig. 1 also illustrates, and the input shaft of this routine gear case 12 links to each other with the oil motor 35 of hydraulic power system 10; Oil motor 35 and lifting jack 11 shared hydraulic reservoirs 34, the screw axis of soil output 17 links to each other with micro-machine 32.
Three sides that model casing 1 is not connected with shield machine 6 all have the side door hole, and the side door hole is connected with side door lid 24 by bolt; The top of model casing 1 has the roof door hole, and the roof door hole is connected with roof door lid 26 by bolt.
The inside surface of the orienting sleeve 7 of model casing 1 is provided with O-ring seal.
The top of model casing 1 is equipped with tensimeter 36; The top of muddy water jar 13 also is equipped with tensimeter 36.

Claims (5)

1. slurry-water balance type shield simulation test system, its composition is:
Place Soil Model case (1) and be fixed in (2) on the base, the interior freezing pipe (5) of refrigeration freezing plant (4) and model casing (1) is communicated with;
The front portion of shield machine (6) enters model casing (1) through the orienting sleeve (7) on model casing (1) side, and the anterior cutterhead (9) of shield machine (6) links to each other with the output shaft of the gear case (12) of hydraulic power system (10) by main shaft (8); Be positioned at the lifting jack (11) of shield machine (6) left and right sides, be connected between model casing (1) and the gear case (12);
Cutterhead (9) rear of shield machine (6) is provided with dividing plate (31), and the space between dividing plate (31) and the cutterhead (9) constitutes the muddy water cabin; The Grouting Pipe (14) of the muddy water jar (13) that links to each other with the air pressure pressue device penetrates shield machine (6) inside at the afterbody of shield machine (6) casing, and the end is fixed on the dividing plate (31); The muddy water cabin is stretched in the import of the soil output (17) of the interior bottom of shield machine (6), and outlet links to each other with the sediment jar (18) of shield machine (6) lower rear; Sediment jar (18) then links to each other with muddy water jar (13) by force pipe (37);
The top of model casing (1) links to each other with the air pressure pressue device by forcing pipe (38);
Be embedded with temperature sensor (19), pore pressure gauge (20), displacement meter (21), soil pressure cell (22) in the soil body in the model casing (1); Temperature sensor (19), pore pressure gauge (20), displacement meter (21), soil pressure cell (22) all are connected with data acquisition and control device.
2. a kind of slurry-water balance type shield simulation test as claimed in claim 1 system, it is characterized in that: the input shaft of described gear case (12) links to each other with the oil motor (35) of hydraulic power system (10); Oil motor (35) and the shared hydraulic reservoir of lifting jack (11) (34), the screw axis of soil output (17) links to each other with micro-machine (32).
3. a kind of slurry-water balance type shield simulation test as claimed in claim 1 system, it is characterized in that: three sides that described model casing (1) is not connected with shield machine (6) all have the side door hole, and the side door hole is connected by bolt and side door lid (24); The top of model casing (1) has the roof door hole, and the roof door hole is connected with roof door lid (26) by bolt.
4. a kind of slurry-water balance type shield simulation test as claimed in claim 1 system, it is characterized in that: the inside surface of the orienting sleeve (7) of described model casing (1) is provided with O-ring seal (27).
5. a kind of slurry-water balance type shield simulation test as claimed in claim 1 system, it is characterized in that: the top of described model casing (1) is equipped with tensimeter (36); The top of muddy water jar (13) also is equipped with tensimeter (36).
CN 201110047669 2011-02-28 2011-02-28 Muddy water balance type shield simulation testing system CN102221474B (en)

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Application Number Priority Date Filing Date Title
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CN102221474B CN102221474B (en) 2013-10-16

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102721604A (en) * 2012-06-28 2012-10-10 中国地质科学院地质力学研究所 Device and method for physical simulation test of stability of deep tunnel surrounding rock
CN102901805A (en) * 2012-09-28 2013-01-30 中国地质大学(武汉) Strain type double-faced drainage squeezing instrument for pore water of ground
CN102901685A (en) * 2012-10-23 2013-01-30 中南大学 Cutter friction abrasion testing machine for simulating shield construction conditions, testing cutter and testing method
CN103206229A (en) * 2013-04-23 2013-07-17 上海盾构设计试验研究中心有限公司 Working well-free heading machine synchronous grouting simulation test platform
CN103437771A (en) * 2013-07-29 2013-12-11 同济大学 Indoor model test device capable of simulating slurry balance shield construction and use method thereof
CN104034550A (en) * 2014-06-24 2014-09-10 同济大学 Multifunctional slurry shield test system for teaching
CN103852574B (en) * 2012-11-28 2015-11-18 中国石油天然气集团公司 A kind of shield tunnel back of the body fills in analogue means and the using method thereof of slurry experiment
CN105334142A (en) * 2015-12-16 2016-02-17 北京交通大学 Experiment device for simulating shield mud membrane formation
CN105716895A (en) * 2016-04-07 2016-06-29 中铁工程装备集团有限公司 Testing device for muddy water tube push bench
CN106226497A (en) * 2016-08-17 2016-12-14 上海交通大学 Simulation shield tunnel synchronous grouting is to the assay device of stratum settlement influence and method
CN106908260A (en) * 2017-01-17 2017-06-30 同济大学 A kind of multifunction micro tunnel piercing model assay systems
CN107328861A (en) * 2017-08-11 2017-11-07 江苏省宏源电力建设监理有限公司 A kind of multi-functional physical parameter change modeling device in shield launching termination
CN108181087A (en) * 2018-02-01 2018-06-19 中南大学 A kind of slurry shield machine scouring experiment system and its analogue experiment installation of application
CN108489745A (en) * 2018-03-11 2018-09-04 北京工业大学 A kind of variable cross-section soil pressure balancing type tunnel shielding simulation experiment system
CN108506008A (en) * 2018-03-09 2018-09-07 义乌工商职业技术学院 A kind of model test apparatus of simulation shield machine driving
CN108506005A (en) * 2018-03-11 2018-09-07 北京工业大学 A kind of earth pressure balance model shield testing machine of achievable cutterhead pressure monitoring function
CN109406092A (en) * 2018-09-26 2019-03-01 中南大学 A kind of slurry shield machine circulation system simulated experiment platform
CN110346163A (en) * 2019-07-18 2019-10-18 重庆大学 A kind of pusher experimental rig and method for shield model test
CN110397443A (en) * 2019-07-18 2019-11-01 重庆大学 A kind of pilot system and method for slurry shield model test
CN112228089A (en) * 2020-12-14 2021-01-15 北京建工土木工程有限公司 Bottom sealing method in model test of shield method main tunnel inner pump room mechanized construction

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CN101705827A (en) * 2009-10-21 2010-05-12 上海隧道工程股份有限公司 Muddy water and air balance shield pressure control method and device
CN202041394U (en) * 2011-02-28 2011-11-16 西南交通大学 Testing device for mud-water balanced type model shield

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DE3446679A1 (en) * 1984-12-21 1986-06-26 Hochtief Ag Hoch Tiefbauten Method of driving and supporting a tunnel by means of a shield tunnelling machine
EP0402576B1 (en) * 1989-06-16 1995-10-11 Kubota Construction Co., Ltd. Shield machine for use in a shield tunneling method for constructing a small diameter tunnel
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CN1619281A (en) * 2004-12-09 2005-05-25 上海隧道工程股份有限公司 Analogue soil box for analogue shiold tunnelling machine testing
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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102721604A (en) * 2012-06-28 2012-10-10 中国地质科学院地质力学研究所 Device and method for physical simulation test of stability of deep tunnel surrounding rock
CN102721604B (en) * 2012-06-28 2013-12-11 中国地质科学院地质力学研究所 Method for physical simulation test of stability of deep tunnel surrounding rock
CN102901805A (en) * 2012-09-28 2013-01-30 中国地质大学(武汉) Strain type double-faced drainage squeezing instrument for pore water of ground
CN102901805B (en) * 2012-09-28 2015-07-22 中国地质大学(武汉) Strain type double-faced drainage squeezing instrument for pore water of ground
CN102901685A (en) * 2012-10-23 2013-01-30 中南大学 Cutter friction abrasion testing machine for simulating shield construction conditions, testing cutter and testing method
CN103852574B (en) * 2012-11-28 2015-11-18 中国石油天然气集团公司 A kind of shield tunnel back of the body fills in analogue means and the using method thereof of slurry experiment
CN103206229B (en) * 2013-04-23 2015-06-03 上海盾构设计试验研究中心有限公司 Working well-free heading machine synchronous grouting simulation test platform
CN103206229A (en) * 2013-04-23 2013-07-17 上海盾构设计试验研究中心有限公司 Working well-free heading machine synchronous grouting simulation test platform
CN103437771B (en) * 2013-07-29 2015-06-03 同济大学 Indoor model test device capable of simulating slurry balance shield construction and use method thereof
CN103437771A (en) * 2013-07-29 2013-12-11 同济大学 Indoor model test device capable of simulating slurry balance shield construction and use method thereof
CN104034550A (en) * 2014-06-24 2014-09-10 同济大学 Multifunctional slurry shield test system for teaching
CN105334142A (en) * 2015-12-16 2016-02-17 北京交通大学 Experiment device for simulating shield mud membrane formation
CN105716895B (en) * 2016-04-07 2017-12-19 中铁工程装备集团有限公司 A kind of slurry pipe-jacking machine experimental rig
CN105716895A (en) * 2016-04-07 2016-06-29 中铁工程装备集团有限公司 Testing device for muddy water tube push bench
CN106226497A (en) * 2016-08-17 2016-12-14 上海交通大学 Simulation shield tunnel synchronous grouting is to the assay device of stratum settlement influence and method
CN106226497B (en) * 2016-08-17 2020-05-22 上海交通大学 Test device and method for simulating influence of shield tunnel synchronous grouting on stratum settlement
CN106908260A (en) * 2017-01-17 2017-06-30 同济大学 A kind of multifunction micro tunnel piercing model assay systems
CN107328861A (en) * 2017-08-11 2017-11-07 江苏省宏源电力建设监理有限公司 A kind of multi-functional physical parameter change modeling device in shield launching termination
CN108181087A (en) * 2018-02-01 2018-06-19 中南大学 A kind of slurry shield machine scouring experiment system and its analogue experiment installation of application
CN108181087B (en) * 2018-02-01 2019-09-13 中南大学 A kind of slurry shield machine scouring experiment system and its imitative experimental appliance of application
CN108506008A (en) * 2018-03-09 2018-09-07 义乌工商职业技术学院 A kind of model test apparatus of simulation shield machine driving
CN108489745A (en) * 2018-03-11 2018-09-04 北京工业大学 A kind of variable cross-section soil pressure balancing type tunnel shielding simulation experiment system
CN108506005B (en) * 2018-03-11 2019-08-09 北京工业大学 A kind of earth pressure balance model shield testing machine of achievable cutterhead pressure monitoring function
CN108506005A (en) * 2018-03-11 2018-09-07 北京工业大学 A kind of earth pressure balance model shield testing machine of achievable cutterhead pressure monitoring function
CN109406092A (en) * 2018-09-26 2019-03-01 中南大学 A kind of slurry shield machine circulation system simulated experiment platform
CN109406092B (en) * 2018-09-26 2020-08-07 中南大学 Slurry shield machine circulation system simulation experiment table
CN110346163A (en) * 2019-07-18 2019-10-18 重庆大学 A kind of pusher experimental rig and method for shield model test
CN110397443A (en) * 2019-07-18 2019-11-01 重庆大学 A kind of pilot system and method for slurry shield model test
CN112228089A (en) * 2020-12-14 2021-01-15 北京建工土木工程有限公司 Bottom sealing method in model test of shield method main tunnel inner pump room mechanized construction
CN112228089B (en) * 2020-12-14 2021-03-09 北京建工土木工程有限公司 Bottom sealing method in model test of shield method main tunnel inner pump room mechanized construction

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