CN108951718A - The physical experiments device and method of simulating excavation - Google Patents

The physical experiments device and method of simulating excavation Download PDF

Info

Publication number
CN108951718A
CN108951718A CN201810589682.2A CN201810589682A CN108951718A CN 108951718 A CN108951718 A CN 108951718A CN 201810589682 A CN201810589682 A CN 201810589682A CN 108951718 A CN108951718 A CN 108951718A
Authority
CN
China
Prior art keywords
air bag
liquid capsule
lining component
liquid
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810589682.2A
Other languages
Chinese (zh)
Other versions
CN108951718B (en
Inventor
杜广印
王坤
王磊
郭云峰
谢任飞
武军
夏涵
覃达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
63926 Troops Of Pla
Southeast University
Original Assignee
63926 Troops Of Pla
Southeast University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 63926 Troops Of Pla, Southeast University filed Critical 63926 Troops Of Pla
Priority to CN201810589682.2A priority Critical patent/CN108951718B/en
Publication of CN108951718A publication Critical patent/CN108951718A/en
Application granted granted Critical
Publication of CN108951718B publication Critical patent/CN108951718B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00Testing foundations or foundation structures

Abstract

The invention discloses a kind of physical experiments device and method thereof of simulating excavation, which includes: including model casing, lining component, liquid capsule, air bag.It is buried inside model casing and fills out cast material, and the foundation pit that there is size to be suitable for putting lining component for cast material upper surface;Lining component is arranged in inner concavity, and recess is placed in upward in the foundation pit of model casing;Liquid capsule is placed in the inner cavity of lining component, and has air bag between liquid capsule and lining component;Air bag is inner concavity structure, and the shape of air bag outer rim is adapted to the cavity shape of lining component, and the outer rim shape of liquid capsule then with the inner edge shape adaptation of air bag;When liquid capsule is hydraulically full by inlet tube, the entire interior concave space of air bag can be filled up;When air bag passes through air inlet pipe gassy, it can uniformly be covered with the entire gap between liquid capsule and lining component.Using the present apparatus, has and indoor pit Excavation simulation can be achieved, strong testing tool is provided for geotechnical engineering indoor model test.

Description

The physical experiments device and method of simulating excavation
Technical field
The present invention relates to a kind of physical experiments equipment of simulating excavation, belong to a kind of energy in geotechnical engineering field The physical model test device of structural internal force variation and soil deformation when enough real simulation excavation of foundation pit.
Background technique
With China's rapid development of economy, highway in China, building and water conservancy construction cause also flourish therewith, foundation pit Engineering is that all engineerings require to pay attention to, because the unstable of supporting construction usually can be to the consequence of bringing on a disaster property of construction. The construction of engineering be unable to do without laboratory test, especially indoor model test can be by reducing the scale bar of component come model engineering Construction and stress condition and deformation in use, this, which builds up later stability and applicability for engineering project, has very Big directive significance.Most distinct issues are native in simulation of excavation process well can not to answer during Base Pit Excavation Simulation The ess-strain of stress-strain and inner lining structure, because model casing internal model material will appear model stress after model reduces Field is more much smaller than the stress field of Practical Project, and the internal lateral pressure coefficient for filling out solid and external lateral pressure coefficient are inconsistent, interior Situations such as portion and inconsistent external density, and will cause in previous model test digging process compared with large disturbances, make in the soil body The data inaccuracy that portion's monitoring device obtains.
Summary of the invention
Technical problem: the purpose of the present invention is disturb greatly and be unable to real simulation for existing Base Pit Excavation Simulation to excavate Process and design one kind being capable of real simulation excavation of foundation pit equipment.The present invention can need to realize the true of excavation of foundation pit according to test Real simulation, and this device fabrication is simple, cheap, is a kind of economic, practical physical experiments in geotechnical engineering field Equipment.
Technical solution: for achieving the above object, the present invention is used for a kind of physical experiments of simulating excavation Following technical solution can be used in equipment:
A kind of physical experiments equipment of simulating excavation, including model casing (12), lining component (13), liquid capsule (2), gas Capsule (7), in which:
It buries and fills out cast material (9) inside model casing (12), and there is size to be suitable for putting lining component for cast material (9) upper surface Foundation pit;
The lining component (13) is arranged in inner concavity, and recess is placed in upward in the foundation pit of model casing (12);
Liquid capsule is placed in the inner cavity of lining component, and has air bag between liquid capsule and lining component;
Air bag has air inlet and air outlet;The air inlet of air bag is equipped with air inlet pipe, and the gas outlet of air bag is equipped with escape pipe;Air inlet Air-stopping valve is mounted on pipe, escape pipe;
Liquid capsule has inlet and liquid outlet;The inlet of liquid capsule is equipped with inlet tube, and the liquid outlet of liquid capsule is located at the lower end of liquid capsule, And equipped outlet tube;Water check valve is mounted on inlet tube, outlet tube;
Air bag is inner concavity structure, and the shape of air bag outer rim is adapted to the cavity shape of lining component, and the outer rim shape of liquid capsule Shape then with the inner edge shape adaptation of air bag;
When liquid capsule is hydraulically full by inlet tube, the entire interior concave space of air bag can be filled up;
When air bag passes through air inlet pipe gassy, it can uniformly be covered with the entire gap between liquid capsule and lining component;
When the liquid of therein filling is discharged by outlet tube for liquid capsule, it is filled with the constant gas of pressure always in air bag.
As the further improvement of invention, air bag be connected to by air inlet pipe with the high-voltage end of pulsometer, by escape pipe and The low-pressure end of pulsometer is connected to.
As the further improvement of invention, air bag (7) is plastics or rubber material, with a thickness of 0.0075mm ~ 0.15mm; Gap between liquid capsule and lining component is 1 ~ 2cm;The gas of inside air bag is air.
As the further improvement of invention, lining component (13) is pasted with foil gauge.
As the further improvement of invention, liquid capsule (2) is plastics and rubber material, with a thickness of 0.0075mm ~ 0.15mm;.
As the further improvement of invention, inlet tube (6) is set to liquid capsule (2) top, and outlet tube (10) is set to liquid capsule (2) lower part.
As the further improvement of invention, liquid capsule is connected to by inlet tube (6) with the high-voltage end of hydraulic pump, and by going out liquid Pipe (10) is connected to the low-pressure end of hydraulic pump.
Another technical purpose of the invention is to provide a kind of physical experiments equipment of above-mentioned simulating excavation Application method, comprising the following steps:
(1), testing equipment assembles
1.1, model casing (12) are placed in testing position, are needed to pay attention in middle addition cast material (9) of model casing (12), addition Layered rolling guarantees the compactness of cast material (9), and compactness is determined according to the practical soil body density simulated, while should also be infused Meaning landfill soil pressure cell, pore pressure meter;Addition cast material (9) needs the shallow storage space of reserved lining component (13);
1.2, the lining component (13) made according to Practical Project is placed in model casing (12), lining component (13) is in inner concavity Setting, recess is upward when placement;, inner concavity air bag (7) are laid in the cavity of lining component, and liquid capsule is placed in the inside of air bag (7) (2), liquid capsule (2) can fill up the entire inner space of air bag;
(2) prepare before test
2.1, the air-stopping valve (4) of escape pipe (11) is closed, the motor of pulsometer (1) is opened, motor rotation makes supercharge cylinders, pressure It is transmitted in air bag (7) by air inlet pipe (3), inflates air bag (7), close air inlet pipe after inflating the pressure value for reaching needs (3) motor of air-stopping valve (4) and pulsometer (1);
2.2, the water check valve (5) of outlet tube (10) is closed, the motor of hydraulic pump (8) is opened, motor rotation is pressurized hydraulic cylinder, presses Power is transmitted in liquid capsule (2) by inlet tube (6), keeps liquid capsule (2) hydraulically full, filling liquid reach close after the pressure values of needs into The water check valve (5) of liquid pipe (6) and the motor of hydraulic pump (8);
(3) simulating excavation
3.1, data collection system is opened, the water check valve (5) in the middle part of outlet tube (10) is opened, opens the motor in hydraulic pump (8), The liquid for being filled with liquid capsule (2) gradually flows back into hydraulic cylinder, until liquid is completely exhausted out, indicates that excavation of foundation pit is completed;
3.2, the air-stopping valve (4) in the middle part of escape pipe (11) is opened, the motor of pulsometer (1), the gas being filled in air bag (2) are opened It is gradually drawn into cylinder, until gas is fully entrained in cylinder, closes motor;Liquid capsule (2) and air bag (7) are taken out, it is continued His monitoring test, until off-test.
The utility model has the advantages that compared with conventional testing techniques, the present invention:
1, the present invention puts the liquid capsule filled with liquid in lining component, by gradually discharging the liquid filled in liquid capsule, simulates The process of excavation of foundation pit passes through sensing it follows that being not easy the cast material in Disturbance Model case in digging process of the present invention The data of device detection can reflect substantially due to caused by liquid discharge in liquid capsule, so more can truly react Practical digging process;
2, the present invention arranges air bag between liquid capsule and lining component, so that the pressure change generated after liquid discharge in liquid capsule, It is transferred to lining component by the air bag filled with pressure constant gas, it follows that air bag of the present invention, can alleviate liquid The hydraulic acute variation generated when liquid is discharged in capsule to lining component, especially lining component side wall, substantially eliminates model Case is influenced relative to the stress variation amplification that practice of construction place reduces, and is actually excavated so more can truly react Journey;
3, the present invention is used in indoor physical model test, can adjust lateral pressure size according to Practical Project, and can be with Adjustment a rate of advance and excavation stepping as needed, the feature of economical, reliability and repeatability.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for a kind of physical experiments equipment of simulating excavation.
Wherein have: baric systerm 1, liquid capsule 2, air inlet pipe 3, air-stopping valve 4, water check valve 5, inlet tube 6, air bag 7, hydraulic system 8, cast material 9, outlet tube 10, escape pipe 11, model casing 12, lining component 13.
Specific embodiment
With reference to the accompanying drawing and specific example, the present invention is furture elucidated, it should be understood that these examples are merely to illustrate this hair Bright rather than limit the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention various etc. The modification of valence form falls within the application range as defined in the appended claims.
Refering to Figure 1, the present invention discloses a kind of physical experiments equipment of simulating excavation, the equipment is main It is divided into following three parts: external pneumatic compression devices, trial body, external hydraulic device, in which:
The trial body, including model casing, cast material, lining component, air bag, liquid capsule:
Lining component is made according to actual condition, and the sensors such as foil gauge are made and pasted according to actual requirement of engineering;Liner Component is test model component, is in inner concavity structure.Buried in model casing again and fill out cast material, buried when filling out, need it is to be simulated The reserved foundation pit for putting lining component in position.The recess of lining component is placed on upward needs position to be simulated, liner structure It is laid with the air bag in inner concavity setting on the inside of part, is laid with liquid capsule on the inside of air bag, liquid capsule should have sufficiently large, can fill up the interior of air bag Portion space.
Air bag and liquid capsule can select plastics or rubber material, wall thickness 0.0075mm ~ 0.15mm, air bag thickness according to demand Degree should be in 1cm ~ 2cm.
Gap between liquid capsule and lining component is 1 ~ 2cm;In other words, the whole thickness of the air bag after gassy For 1 ~ 2cm.
Inside air bag gas can select air or other not liquescent gases.Air inlet is arranged in the top of air bag, Gas outlet is arranged in lower part.
Liquid capsule internal liquid can choose water, also can choose and configures other solution.Inlet is arranged in the top of liquid capsule, under Liquid outlet is arranged in portion.
The external pneumatic compression devices, including baric systerm, air inlet pipe, escape pipe, air-stopping valve;
Baric systerm uses electropneumatic pump, including motor and pneumatic cylinder;The high-voltage end of pneumatic cylinder passes through air inlet pipe and air bag Air inlet connection, and the low-pressure end of pneumatic cylinder then passes through exhaust pipe and is connected to the gas outlet of air bag.And air inlet pipe, exhaust pipe Middle part is respectively mounted air-stopping valve.
By starting motor, pneumatic cylinder can be pressurized.
The external hydraulic device, including hydraulic system, inlet tube, outlet tube, water check valve;
Hydraulic system uses electrohydraulic cylinder, including motor and hydraulic cylinder;It, being capable of pressurizing hydraulic cylinder by starting motor;Liquid The high-voltage end of cylinder pressure is connected to by inlet tube with the inlet of liquid capsule, and the low-pressure end of hydraulic cylinder then passes through outlet tube and liquid capsule Liquid outlet connection.And only liquid valve is respectively mounted in the middle part of inlet tube, outlet tube.
Illustrate a kind of physical experiments equipment of simulating excavation of the present invention below by specific test example Application method:
Model casing is placed in testing position, adds cast material in model casing, when addition need to pay attention to layered rolling guarantee it is close Solidity, compactness are determined according to the practical soil body density simulated, while should also be noted that the sensings such as landfill soil pressure cell, pore pressure meter Device equipment.Addition cast material needs the space of reserved lining component, then places lining component.Lining component can be according to reality The production of border engineering, lining component another side need to lay air bag, and liquid capsule is placed on the inside of air bag, and liquid capsule should fill up entire internal empty Between.When on-test, the air-stopping valve of escape pipe is closed, opens the motor of baric systerm, motor rotation makes supercharge cylinders, and pressure is logical Cross air inlet pipe to be transmitted in air bag, inflate air bag, inflation reach close after the pressure values of needs air inlet pipe air-stopping valve it is gentle The motor of pressure system.It is then switched off the water check valve of outlet tube, opens the motor of hydraulic system, motor rotation is pressurized hydraulic cylinder, Pressure is transmitted in liquid capsule by inlet tube, keeps liquid capsule hydraulically full, and filling liquid closes inlet tube after reaching the pressure values of needs The motor of water check valve and hydraulic system.When simulating excavation, data collection system is opened, opens the sealing in the middle part of outlet tube Valve opens the motor in hydraulic system, and the liquid for being filled with liquid capsule gradually flows back into hydraulic cylinder, can be according to practical a rate of advance Back-flow velocity is adjusted, until liquid excludes to indicate that excavation of foundation pit is completed completely.The air-stopping valve in the middle part of baric systerm is opened, is opened The motor of baric systerm, the gas being filled in air bag are gradually drawn into cylinder, can according to need and regulate the speed, until gas It is fully entrained in cylinder, closes motor.Liquid capsule and air bag are taken out, other monitoring tests are continued, until off-test.

Claims (14)

1. a kind of physical experiments equipment of simulating excavation, it is characterised in that: including model casing (12), lining component (13), liquid capsule (2), air bag (7), in which:
It buries and fills out cast material (9) inside model casing (12), and there is size to be suitable for putting lining component for cast material (9) upper surface Foundation pit;
The lining component (13) is arranged in inner concavity, and recess is placed in upward in the foundation pit of model casing (12);
Liquid capsule is placed in the inner cavity of lining component, and has air bag between liquid capsule and lining component;
Air bag has air inlet and air outlet;The air inlet of air bag is equipped with air inlet pipe, and the gas outlet of air bag is equipped with escape pipe;Air inlet Air-stopping valve is mounted on pipe, escape pipe;
Liquid capsule has inlet and liquid outlet;The inlet of liquid capsule is equipped with inlet tube, and the liquid outlet of liquid capsule is located at the lower end of liquid capsule, And equipped outlet tube;Water check valve is mounted on inlet tube, outlet tube;
Air bag is inner concavity structure, and the shape of air bag outer rim is adapted to the cavity shape of lining component, and the outer rim shape of liquid capsule Shape then with the inner edge shape adaptation of air bag;
When liquid capsule is hydraulically full by inlet tube, the entire interior concave space of air bag can be filled up;
When air bag passes through air inlet pipe gassy, it can uniformly be covered with the entire gap between liquid capsule and lining component;
When the liquid of therein filling is discharged by outlet tube for liquid capsule, it is filled with the constant gas of pressure always in air bag.
2. the physical experiments equipment of simulating excavation according to claim 1, it is characterised in that: air bag by into Tracheae is connected to the high-voltage end of pulsometer, is connected to by escape pipe with the low-pressure end of pulsometer.
3. the physical experiments equipment of simulating excavation according to claim 1 or 2, it is characterised in that: air bag (7) For plastics or rubber material, with a thickness of 0.0075mm ~ 0.15mm;Gap between liquid capsule and lining component is 1 ~ 2cm;Air bag Internal gas is air.
4. the physical experiments equipment of simulating excavation according to claim 3, it is characterised in that: lining component (13) it is pasted with foil gauge.
5. the physical experiments equipment of simulating excavation according to claim 1, it is characterised in that: liquid capsule (2) is Plastics and rubber material, with a thickness of 0.0075mm ~ 0.15mm.
6. the physical experiments equipment of simulating excavation according to claim 1, it is characterised in that: inlet tube (6) It is set to liquid capsule (2) top, outlet tube (10) is set to the lower part of liquid capsule (2)).
7. the physical experiments equipment of simulating excavation according to claim 1, it is characterised in that: liquid capsule by into Liquid pipe (6) is connected to the high-voltage end of hydraulic pump, and is connected to by outlet tube (10) with the low-pressure end of hydraulic pump.
8. a kind of application method of the physical experiments equipment of simulating excavation as described in claim 1, feature exist In, comprising the following steps:
(1), testing equipment assembles
1.1, model casing (12) are placed in testing position, are needed to pay attention in middle addition cast material (9) of model casing (12), addition Layered rolling guarantees the compactness of cast material (9), and compactness is determined according to the practical soil body density simulated, while should also be infused Meaning landfill soil pressure cell, pore pressure meter;Addition cast material (9) needs the shallow storage space of reserved lining component (13);
1.2, the lining component (13) made according to Practical Project is placed in model casing (12), lining component (13) is in inner concavity Setting, recess is upward when placement;, inner concavity air bag (7) are laid in the cavity of lining component, and liquid capsule is placed in the inside of air bag (7) (2), liquid capsule (2) can fill up the entire inner space of air bag;
(2) prepare before test
2.1, the air-stopping valve (4) of escape pipe (11) is closed, the motor of pulsometer (1) is opened, motor rotation makes supercharge cylinders, pressure It is transmitted in air bag (7) by air inlet pipe (3), inflates air bag (7), close air inlet pipe after inflating the pressure value for reaching needs (3) motor of air-stopping valve (4) and pulsometer (1);
2.2, the water check valve (5) of outlet tube (10) is closed, the motor of hydraulic pump (8) is opened, motor rotation is pressurized hydraulic cylinder, presses Power is transmitted in liquid capsule (2) by inlet tube (6), keeps liquid capsule (2) hydraulically full, filling liquid reach close after the pressure values of needs into The water check valve (5) of liquid pipe (6) and the motor of hydraulic pump (8);
(3) simulating excavation
3.1, data collection system is opened, the water check valve (5) in the middle part of outlet tube (10) is opened, opens the motor in hydraulic pump (8), The liquid for being filled with liquid capsule (2) gradually flows back into hydraulic cylinder, until liquid is completely exhausted out, indicates that excavation of foundation pit is completed;
3.2, the air-stopping valve (4) in the middle part of escape pipe (11) is opened, the motor of pulsometer (1), the gas being filled in air bag (2) are opened It is gradually drawn into cylinder, until gas is fully entrained in cylinder, closes motor;Liquid capsule (2) and air bag (7) are taken out, it is continued His monitoring test, until off-test.
CN201810589682.2A 2018-06-08 2018-06-08 Physical model test equipment and method for simulating foundation pit excavation Active CN108951718B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810589682.2A CN108951718B (en) 2018-06-08 2018-06-08 Physical model test equipment and method for simulating foundation pit excavation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810589682.2A CN108951718B (en) 2018-06-08 2018-06-08 Physical model test equipment and method for simulating foundation pit excavation

Publications (2)

Publication Number Publication Date
CN108951718A true CN108951718A (en) 2018-12-07
CN108951718B CN108951718B (en) 2021-06-22

Family

ID=64488067

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810589682.2A Active CN108951718B (en) 2018-06-08 2018-06-08 Physical model test equipment and method for simulating foundation pit excavation

Country Status (1)

Country Link
CN (1) CN108951718B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113960696A (en) * 2021-09-22 2022-01-21 山东大学 Method for burying field bad geologic body by comprehensive geophysical prospecting and test method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63300104A (en) * 1987-05-29 1988-12-07 Nippon Kokudo Kaihatsu Kk Judgment of bearing force of ground
CN104914231A (en) * 2015-05-20 2015-09-16 上海理工大学 Model test device for testing foundation pit group excavation sequence and support case-caused influence on stratum
CN105862874A (en) * 2016-04-14 2016-08-17 浙江科技学院 Protection method for controlling deformation of building structure close to foundation pit
CN205712219U (en) * 2016-04-01 2016-11-23 浙江大学 A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63300104A (en) * 1987-05-29 1988-12-07 Nippon Kokudo Kaihatsu Kk Judgment of bearing force of ground
CN104914231A (en) * 2015-05-20 2015-09-16 上海理工大学 Model test device for testing foundation pit group excavation sequence and support case-caused influence on stratum
CN205712219U (en) * 2016-04-01 2016-11-23 浙江大学 A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test
CN105862874A (en) * 2016-04-14 2016-08-17 浙江科技学院 Protection method for controlling deformation of building structure close to foundation pit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113960696A (en) * 2021-09-22 2022-01-21 山东大学 Method for burying field bad geologic body by comprehensive geophysical prospecting and test method

Also Published As

Publication number Publication date
CN108951718B (en) 2021-06-22

Similar Documents

Publication Publication Date Title
CN106442258B (en) A kind of detachable lining cutting seepage flow test device and its test method
CN105334142B (en) A kind of experimental provision formed for simulating shield mud film
CN104749081B (en) Hypotonic soil body hydraulic pressure transfer law test device and its method of testing
CN201241707Y (en) Tunnel upward floating model trial apparatus
CN106525526B (en) A kind of measuring method of the high pressure water injection of raw coal containing gas and radial gas permeation rate
CN206862784U (en) A kind of indoor Triaxial tester for testing sand slip casting setting strength
CN106840977A (en) Slurry filling imitation device
CN204924802U (en) Simple and easy consolidation test device that clay layer warp is sent to indoor simulation extraction pressure -bearing water
CN206431022U (en) The side wall sealing device of concrete permeability test
CN107290222A (en) A kind of rock triaxial test device and method
CN107436140A (en) The settling column test instrument and test method that vacuum preloading and piling prepressing are combined
CN106769500A (en) A kind of ground permeates the test method of gas pressure consolidation
CN109323902A (en) A kind of experimental rig and test method of microorganism gelling Stabilization of Loess sample
CN106198890A (en) A kind of indoor grouting simulation test device and using method thereof
CN109870364A (en) Stress-seepage coupling acts on the experimental rig and method of lower Rock And Soil
CN112781976A (en) Large-scale triaxial test instrument of coarse-grained soil with seepage pressure control
CN108951718A (en) The physical experiments device and method of simulating excavation
CN107165204B (en) Testing method considering horizontal bearing characteristic of single pile under action of confined water
CN206459930U (en) One kind infiltration gas pressure consolidation instrument
CN104730223B (en) Volume change considering expansive soil SWCC curve testing apparatus and volume change considering expansive soil SWCC curve testing method
CN205262912U (en) Experimental device for it constructs sludge -biofilm formation to be used for simulating shield
CN206920249U (en) Interior Water hydraulic static pressure loading equipment for water tunnel structural model test
CN105067221A (en) Dynamic induction simulation device for broken surrounding rock grouting reinforcement, and testing method therefor
CN107703031A (en) A kind of air pressure driving loose media grouting simulation test device and test method
CN112161908A (en) Triaxial apparatus continuous seepage test device and use method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant