CN205262912U - Experimental device for it constructs sludge -biofilm formation to be used for simulating shield - Google Patents
Experimental device for it constructs sludge -biofilm formation to be used for simulating shield Download PDFInfo
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- CN205262912U CN205262912U CN201521047564.7U CN201521047564U CN205262912U CN 205262912 U CN205262912 U CN 205262912U CN 201521047564 U CN201521047564 U CN 201521047564U CN 205262912 U CN205262912 U CN 205262912U
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- mud
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- pipeline
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Abstract
The utility model discloses a PMMA pipe that experimental device for it constructs sludge -biofilm formation to be used for simulating shield, the device include the stratum simulation case, are used for to simulate the mud storehouse says and supplies the power loading system that the drive did all can for the mud of PMMA pipe in saying, one end that PMMA pipe said with the stratum simulation housing -case leads to in succession, power loading system says for PMMA pipe that interior mud provides drive power from the other end that PMMA pipe said. The utility model discloses respectively monitor the qualitative parameter of the parameter change rule and the mud infiltration condition and sludge -biofilm performance to the sludge -biofilm forming process and sum up the analysis, find out the principal element that influences mud balanced type shield and construct the formation of effective sludge -biofilm, stably provide reliable experiment foundation for the mud shield constructs construction excavation face.
Description
Technical field
The present invention relates to tunnel and underground engineering laboratory apparatus technical field, particularly relate to a kind of for simulating the film formed jacket casing cylinder of shield structure mud experimental provision.
Background technology
The construction of mud balanced shield method is built in subway, roads and tunnels or major diameter cross-river tunnel engineering over strait and is widely adopted in shallow embedding soft soil layer. Due to soft soil layer and the rivers bottom general stability of the soil body very poor, geological environment is very complicated, the environment that causes mud shield tunneling face is more and more severeer, problem new in Practical Project continues to bring out, construction safety is subject to serious threat. A large amount of engineering practice and theories show: in excavation face, forming the effective mud film of one deck is the key of guaranteeing that it is stable as support medium, about problems such as the formation mechanism of mud film, formation condition, validity evaluation indexs, domestic and international many scholars have carried out some significant trials, obtain certain achievement in research, for good reference function has been played in our follow-up research. But the stable mechanism of mud shield tunneling face is very complicated, just affect the interaction relationship between the film formed factor of mud and each factor effect and rule and formation parameter, construction parameter, characteristics of mud, there is no understanding clearly, the research of these problems, majority need to be by having tested.
Effectively the formation of mud film is the prerequisite that excavation face is stable, and mud film is as a kind of water proof material, for the balance of mud effective pressure and groundwater pressure and earth lateral pressure provides interaction medium. There is very large security risk and uneconomical owing to doing field experiment, experimental study for mud shield tunneling face stability nearly all adopts laboratory experiment method, therefore, the development of indoor experimental apparatus and relevant device is one of key work of mud shield tunneling face stability research.
Summary of the invention
The problem existing for solving prior art, the present invention adopts following technical proposals:
One is used for simulating the film formed experimental provision of shield structure mud, and this device comprises stratum simulation box, for simulating the lucite pipeline in mud storehouse and for the mud in lucite pipeline is for the power loading system of driving force;
The socket of one end of described lucite pipeline and described stratum simulation box is communicated with, and described power loading system provides driving force from the other end of lucite pipeline for the mud in lucite pipeline.
Preferably, in the simulation box of described stratum, in case, be furnished with at least one group of soil pressure cell, interstitial hydraulic pressure and temperature sensor by simulation demand.
Preferably, on the simulation box of described stratum, be further provided with multiple through holes;
A through hole in described multiple through hole is as seepage discharge measured hole, for being connected with external container or pipeline;
At least one through hole in described multiple through hole except seepage discharge measured hole is used to soil pressure cell, interstitial hydraulic pressure meter and the temperature sensor in the simulation box of stratum to provide and be connected with external data harvester;
On the inwall that is provided with seepage discharge measured hole on the simulation box of described stratum, be further equipped with permeable stone.
Preferably, described lucite pipeline comprises slurry chamber and is arranged on mud grout, steam vent and the mud round on lucite pipeline.
Preferably, described power loading system comprises force-transmitting piston and has the loading air bag that charges and discharge gas port;
The power that described force-transmitting piston and loading air bag are successively set on mud in lucite pipeline applies direction.
Preferably, described power loading system further comprises the air compressor being connected with described loading air bag by connecting pipe and is arranged on the pressure regulator valve in connecting pipe.
Preferably, this experimental provision further comprise the end part seal plate of the one end that deviates from stratum simulation box for sealing organic glass pipe and be arranged on end part seal plate and lucite pipeline end face between sealing gasket;
Described end part seal plate is fixed on the simulation box of described stratum by least two shanks of bolt;
Described end part seal plate is provided with and holds the through hole that loads the connecting pipe that is connected with external device (ED) of air bag.
Preferably, this experimental provision further comprises the mud film freezing plant with inlet end and outlet side.
Preferably, this experimental provision further comprises the liquid nitrogen storage device being connected with the inlet end of described mud film freezing plant by connecting pipe and the globe valve that is arranged on inlet end and outlet side.
Preferably, this experimental provision further comprises the bearing for supporting organic glass pipe.
Beneficial effect of the present invention is as follows:
Technical scheme of the present invention is compared with prior art:
1, can simulate mud infiltration in two kinds of situations and form experiment with mud film, while being combined to form jacket casing barrel structure with soil layer simulation box and lucite cylinder, be that soil layer does not enter lucite cylinder inside, soil sample filling interface 7 as shown in Figure 1, can carry out diffused mud permeability test, when by a part of lucite cylinder when the soil layer simulation box, when soil sample filling interface 8 as shown in Figure 1, can carry out orthotype mud permeability test, be conducive to experimental result contrast;
2, adopt and load air bag, by force-transmitting piston, mud is exerted pressure, in more realistic engineering, cutter head of shield machine is to the mud situation of exerting pressure;
3, adopt jacket casing barrel structure, form at lucite tube end and soil layer contact-making surface simulation mud film, lucite tube plays mounted section of jurisdiction in practice of construction and acts on, and mud can be to scattering and permeating in soil layer, allows simulated experiment closing to reality operating mode more;
4, adopt automaticdata sampling device, can synchronous recording experimentation in, the Changing Pattern of soil pressure, interstitial hydraulic pressure in soil layer;
5, use mud film freezing plant, can, after experimental situation is cancelled, mud film form be preserved, can carry out the performance of mud film and carry out qualitative and quantitative analysis.
Brief description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail;
Fig. 1 illustrates the schematic diagram of experimental provision of the present invention;
Fig. 2 illustrates the profile of the stratum simulation box of experimental provision of the present invention.
Drawing reference numeral
1, stratum simulation box, 2, soil pressure cell, 3, interstitial hydraulic pressure meter, 4, temperature sensor, 5, lucite pipeline, 6, mud film freezing plant, 7, soil sample filling interface in the first experiment situation, 8, soil sample filling interface in the second experiment situation;
11, through hole, 12, seepage discharge measured hole;
50, bearing, 51, force-transmitting piston, 52, load air bag, 53, slurry chamber, 54, connecting pipe, 55, air compressor, 56, outside slush pump, 57, pressure regulator valve, 58, shank of bolt, 59, end part seal plate;
53-1, globe valve, 53-2, globe valve; 61, globe valve, 61-1, globe valve, 61-2, globe valve, 62, liquid nitrogen storage device;
Detailed description of the invention
In order to be illustrated more clearly in the present invention, below in conjunction with preferred embodiments and drawings, the present invention is described further. Parts similar in accompanying drawing represent with identical Reference numeral. It will be appreciated by those skilled in the art that specifically described content is illustrative and nonrestrictive below, should not limit the scope of the invention with this.
As shown in Figure 1, the invention discloses a kind ofly for simulating the film formed experimental provision of shield structure mud, this device comprises stratum simulation box 1, for simulating the lucite pipeline 5 in mud storehouse and for the mud in lucite pipeline 5 is for the power loading system of driving force; 1 socket of one end of described lucite pipeline 5 and described stratum simulation box is communicated with, and described power loading system provides driving force from the other end of lucite pipeline 5 for the mud in lucite pipeline 5. According to the needs of analog case in experimentation, in the simulation box of described stratum, be furnished with at least one group of soil pressure cell 2, interstitial hydraulic pressure meter 3 and temperature sensor 4, actual quantity is as the criterion to meet requirement of experiment. On described stratum simulation box 1, be further provided with multiple through holes; A through hole in described multiple through hole is as seepage discharge measured hole 12, for being connected with external container or pipeline; The through hole being connected with seepage discharge measured hole in described multiple through hole is for water filling in casing; At least one through hole in described multiple through hole except seepage discharge measured hole 12 is used to soil pressure cell 2, interstitial hydraulic pressure meter 3 and the temperature sensor 4 in stratum simulation box 1 to provide and be connected with external data harvester; On the inwall that is provided with seepage discharge measured hole 12 on the simulation box of described stratum, be further equipped with permeable stone. In this programme, seepage discharge measured hole 12 has two kinds of purposes, and the one, for water filling in casing, the 2nd, measure for seepage discharge. In this programme, in described lucite pipeline, be provided with a slurry chamber 53 and be arranged on lucite pipeline for slurry chamber pour into mud mud grout, get rid of the steam vent of slurry chamber air and the mud round for slurry chamber discharge mud; Wherein, steam vent place is provided with globe valve 53-1, and mud round place is provided with globe valve 53-2. In this programme, slurry chamber 53 essence are the mud packing space that carries mud in lucite pipeline 5, the capacity in this space can increase to some extent or reduce according to the difference of experiment method, forms experiment and carry out needs in diffused mud permeability test to meet mud infiltration and mud film the needs that inject mud amount. In this programme, described power loading system comprises force-transmitting piston 51 and has the loading air bag 52 that charges and discharge gas port; The power that described force-transmitting piston 51 and loading air bag 52 are successively set on lucite pipeline 5 interior mud applies direction. Described power loading system further comprises the air compressor 55 being connected with described loading air bag 52 by connecting pipe 54 and is arranged on the pressure regulator valve 57 in connecting pipe 54, pressurizeed or reduces pressure and realize the inflation/deflation of air bag loading air bag by this pressure regulator valve 57. This experimental provision further comprise the end part seal plate 59 of the one end that deviates from stratum simulation box 1 for sealing organic glass pipe 5 and be arranged on end part seal plate 59 and lucite pipeline 5 end faces between sealing gasket; Described end part seal plate 59 is fixed on described stratum simulation box 1 by least two shanks of bolt 58; Described end part seal plate 59 is provided with pressurization hole, loads air bag 52 and utilizes connecting pipe 54 to be connected with air compressor 55 by this pressurization hole. As shown in Figure 2, for the mud film after simulation is remained, this programme is further provided with the mud film freezing plant 6 with inlet end and outlet side in experimental provision, inlet end and the outlet side of described mud film freezing plant are respectively equipped with globe valve 61-1 and 61-2, and the inlet end of described mud film freezing plant is connected with outside liquid nitrogen storage device 62 by connecting pipe. In this programme, in order to increase the stability of lucite pipeline 5, in experimental provision, be further provided with the bearing 50 for supporting organic glass pipe 5.
Below by one group of embodiment, the present invention will be further described:
As depicted in figs. 1 and 2, in this example, provide a kind of for simulating the film formed experimental provision of shield structure mud, this device comprises a tubular steel stratum simulation box 1, in stratum simulation box 1, be embedded with soil pressure cell 2, interstitial hydraulic pressure 3 and temperature sensor 4 by both allocations, soil pressure cell 2, interstitial hydraulic pressure meter 3 and temperature sensor 4 are connected with external data harvester by the reserved through hole 11 of sidewall of stratum simulation box 1, and the sidewall of stratum simulation box 1 is also provided with seepage discharge measured hole 12 and is connected with graduated cylinder or external pipeline. The sidewall of stratum simulation box 1 is provided with a reserved pilot tunnel, and the one end of simulating the lucite pipeline 5 in mud storehouse in the experiment of simulation mud shield structure packs in stratum simulation box 1 by this reserved pilot tunnel, and the other end of lucite pipeline 5 is provided with power loading system. Power loading system comprises the force-transmitting piston 51 being arranged in lucite pipeline 5, and the arranged outside of force-transmitting piston 51 has the air bag 52 of loading, and the inner side of force-transmitting piston 51 is slurry chamber 53; Loading air bag 52 is connected with outside air compressor 55 by pipeline 54; Slurry chamber 53 is connected with outside slush pump 56 by mud import; The upper and lower parts of slurry chamber 53 are respectively equipped with globe valve 53-1,53-2. Load air bag 52 and be provided with pressure regulator valve 57 with the connecting pipe 54 of outside air compressor 55.
The surrounding of the reserved pilot tunnel of stratum simulation box 1 sidewall is fixed with shank of bolt 58, by shank of bolt 58 and end part seal plate 59, lucite pipeline 5 is fixed on stratum simulation box 1 sidewall, the seam crossing of lucite pipeline 5 and reserved pilot tunnel and lucite pipeline 5 and the seam crossing of end part seal plate 59 are provided with sealing ring guarantees the air-tightness of lucite tube, and the outboard end of lucite pipeline 5 is placed on bearing 50.
Mud film freezing plant 6 has also been installed in stratum simulation box 1, and mud film freezing plant 6 is connected with the liquid nitrogen storage device 62 of stratum simulation box 1 outside by globe valve 61.
The concrete operations mode that uses this experimental provision to test is as follows:
One, preparation before experiment: the auxiliary material such as preparing experiment mud used, soil sample, liquid nitrogen, soil pressure cell, interstitial hydraulic pressure meter, temperature sensor, whether the each parts of checking experiment instrument are normal, and especially whether the air-tightness of device is good;
Two, experiment material is prepared and is loaded: after the soil that scene is fetched is dried, screen out the soil particle that does not meet requirement of experiment according to requirement of experiment, to choose again to such an extent that stratum simulation box 1 compacting are inserted in soil sample layering, lay interstitial hydraulic pressure 3 and soil pressure cell 2, temperature sensor 4 in default position by position as shown in Figure 2, wire is drawn from the reserved through hole 11 of sidewall, mud film freezing plant 6 is installed, liquid nitrogen carrier pipe one end is connected with liquid nitrogen storage device 62, be connected with the inlet end of freezing plant by connecting pipe, the other end of freezing plant is connected with atmosphere, simultaneously in the time that soil sample is filled into the reserved pilot tunnel lower edge of reserved lucite pipeline 5, lucite pipeline 5 is imported in stratum simulation box 1, and its other end is placed on support 50. this device can be simulated mud infiltration at least two kinds of situations and be formed experiment with mud film, while being combined to form jacket casing barrel structure with soil layer simulation box 1 and lucite pipeline 5, be that soil layer does not enter lucite cylinder inside, soil sample filling interface 7 as shown in Figure 1, and can carry out diffused mud permeability test, when by a part of lucite pipeline 5 and coating simulation case 1 together when taking up soil sample, when soil sample filling interface 8 as shown in Figure 1, can carry out orthotype mud permeability test, be conducive to experimental result contrast. therefore, in this example, need first to use the cylindrical stopper identical with lucite pipeline 5 internal diameters to import lucite pipeline 5 from the right side of lucite tube as shown in Figure 1, ensure that this stopper can be in the interior movement of lucite pipeline 5, and shift stopper onto glass pipe leftmost side soil sample filling interface 7 as shown in Figure 1 or stopper is shifted onto to the position of glass pipe soil sample filling interface 8 as shown in Figure 1, the demand that forms experiment and carry out diffused mud permeability test to meet mud infiltration and mud film, then, to continue soil sample fills, until concordant with the case mouth upper limb of stratum simulation box 1, add upper plate and top board sealing ring, and case lid and bottom half are fixed with shank of bolt. in this programme, for preventing that the valve arranging on the seepage discharge measured hole 12 on native case from being stopped up by soil particle, on casing, seepage discharge measured hole 12 correspondences are provided with on the cabinet wall of valve one side and are equipped with one deck permeable stone, open the valve that casing seepage discharge measured hole 12 places arrange, seepage discharge measured hole 12 is connected with external water source pipeline, to the interior slow injected water of stratum simulation box 1, in the time having water to flow out from seepage discharge measured hole, prove that soil layer is in rich water state, then valve-off, in stage on-test, allow water progressively upwards soak into soil layer from native case bottom, can fully get rid of like this air in soil layer, until with the nearest through hole of the case mouth upper limb of stratum simulation box 1 in there are flowing out time, illustrate that soil layer is all flooded, soil layer is in rich water state, at mud penetration stage, disconnect the external water source being connected with seepage discharge measured hole 12, change graduated cylinder into and be attached thereto, now, seepage discharge measured hole 12 is converted to measurement seepage discharge.
Three, stopper is extracted out carefully from lucite pipeline 5, guarantee that soil layer does not collapse to non-soil sample fill area, in organic pipe, pack force-transmitting piston 51, loading air bag 52 into successively, end part seal plate 59 is fixed on by shank of bolt 58 on the casing that utilizes steel plate support of stratum simulation box 1, between end part seal plate 59 and lucite pipeline 5, there is sealing ring, load air bag 52 and be connected with air compressor 55 by the pressurization hole on end part seal plate 59 by connecting pipe 54;
Four, experiment starts, by globe valve 61-1, 61-2 closes, soil pressure cell 2 wires are reserved through hole 11 by sidewall and are derived, and be connected with data acquisition unit, close globe valve 53-1, open globe valve 53-2, pass through injected hole, mud is injected to slurry chamber 53, open air compressor 55 simultaneously, regulate pressure regulator valve 57 to inflate loading air bag 52, provide certain thrust by loading air bag 52 to force-transmitting piston 51, in slip casting process, guarantee that piston is motionless, when mud, to be injected into the slurry chamber 53 of lucite pipeline 5 interior during without air, slip casting is complete, close injected hole and globe valve 53-2, open infiltration capacity measured hole 12, the outlet that keeps the silicone tube that is connected with infiltration capacity measured hole 12 together the mud liquid level of noting mutually concordant,
Five, according to the force value of experimental design, by adjustable pressure valve 57 and loading air bag 52, force-transmitting piston 51 is moved and loaded to slurry chamber direction, be formed with pressure mud, interstitial hydraulic pressure, soil pressure and seepage discharge in synchro measure soil layer, and Changing Pattern in time and between on-load pressure value;
Six, when measured value no longer includes after significant change, illustrate that mud film is completed into, record each measured value, now, keep air pressure valve 57 force value constant, open globe valve 61-1,61-2, pass into liquid nitrogen to mud film freezing plant 6, in the time that temperature sensor 4 shows that freezing plant surrounding soil temperature drops to below zero degrees celsius, then continue to pass into nitrogen and stop after 5 minutes, guarantee that mud film is thoroughly freezed;
Seven, stop pressurization, and progressively little pressure, open stratum simulation box 1 top board, the slowly excavation soil body, until mud film forming surface, to mud seepage distance, shape, carry out record to index, phenomenons such as side, lucite tube end range of scatter, mud film thickness, the filling absorption situation of mud to soil layer, open globe valve 53-2, mud is discharged to slurry chamber;
Eight, change respectively soil properties, characteristics of mud, on-load pressure etc., repeat above-mentioned steps, carry out many group experiments.
In sum, technical scheme of the present invention can be simulated in slurry shield work progress, mud infiltrates stratum and forms mud membrane process, can monitor soil layer internal pore water pressure Changing Pattern, mud infiltration capacity, mud film formational situation etc. in mud process of osmosis, and simple and convenient, the present invention brings complicated engineering problem into laboratory, carries out system research, for the stability that improves slurry shield excavation face in Practical Project provides foundation.
Obviously; the above embodiment of the present invention is only for example of the present invention is clearly described; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give all embodiments exhaustively, everyly belong to apparent variation or the still row in protection scope of the present invention of variation that technical scheme of the present invention extends out.
Claims (10)
1. for simulating the film formed experimental provision of shield structure mud, it is characterized in that, this device comprises stratum simulation box, for simulating the lucite pipeline in mud storehouse and for the mud in lucite pipeline is for the power loading system of driving force;
The socket of one end of described lucite pipeline and described stratum simulation box is communicated with, and described power loading system provides driving force from the other end of lucite pipeline for the mud in lucite pipeline.
2. experimental provision according to claim 1, is characterized in that, in the simulation box of described stratum, is furnished with at least one group of soil pressure cell, interstitial hydraulic pressure and temperature sensor by simulation demand in case.
3. experimental provision according to claim 2, is characterized in that, on described stratum simulation box (1), is further provided with multiple through holes;
A through hole in described multiple through hole is as seepage discharge measured hole, for being connected with external container or pipeline;
At least one through hole in described multiple through hole except seepage discharge measured hole is used to soil pressure cell, interstitial hydraulic pressure meter and the temperature sensor in the simulation box of stratum to provide and be connected with external data harvester;
On the inwall that is provided with seepage discharge measured hole on the simulation box of described stratum, be further equipped with permeable stone.
4. experimental provision according to claim 1, is characterized in that, described lucite tube stage property is useful on the slurry chamber of carrying mud and is arranged on mud grout, steam vent and the mud round on lucite pipeline.
5. experimental provision according to claim 4, is characterized in that, described power loading system comprises force-transmitting piston and has the loading air bag that charges and discharge gas port;
The power that described force-transmitting piston and loading air bag are successively set on mud in lucite pipeline applies direction.
6. experimental provision according to claim 5, is characterized in that, described power loading system further comprises the air compressor being connected with described loading air bag by connecting pipe and is arranged on the pressure regulator valve in connecting pipe.
7. experimental provision according to claim 1, it is characterized in that, this experimental provision further comprise the end part seal plate of the one end that deviates from stratum simulation box for sealing organic glass pipe and be arranged on end part seal plate and lucite pipeline end face between sealing gasket;
Described end part seal plate is fixed on the simulation box of described stratum by least two shanks of bolt;
Described end part seal plate is provided with and holds the pressurization hole that loads the connecting pipe that is connected with external device (ED) of air bag.
8. experimental provision according to claim 1, is characterized in that, this experimental provision further comprises having inlet end and outlet side mud film freezing plant.
9. experimental provision according to claim 8, is characterized in that, this experimental provision further comprises the liquid nitrogen storage device being connected with the inlet end of described mud film freezing plant by connecting pipe and is arranged on the globe valve of inlet end and outlet side.
10. experimental provision according to claim 1, is characterized in that, this experimental provision further comprises the bearing for supporting organic glass pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521047564.7U CN205262912U (en) | 2015-12-16 | 2015-12-16 | Experimental device for it constructs sludge -biofilm formation to be used for simulating shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521047564.7U CN205262912U (en) | 2015-12-16 | 2015-12-16 | Experimental device for it constructs sludge -biofilm formation to be used for simulating shield |
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| CN205262912U true CN205262912U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521047564.7U Expired - Fee Related CN205262912U (en) | 2015-12-16 | 2015-12-16 | Experimental device for it constructs sludge -biofilm formation to be used for simulating shield |
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| CN (1) | CN205262912U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334142A (en) * | 2015-12-16 | 2016-02-17 | 北京交通大学 | Experiment device for simulating shield mud membrane formation |
| CN108007827A (en) * | 2017-12-29 | 2018-05-08 | 上海三瑞高分子材料股份有限公司 | Slurry balance shield slurry penetration film forming experimental provision and method |
| CN108489892A (en) * | 2018-03-29 | 2018-09-04 | 华东交通大学 | Seabed Shield Tunneling experimental rig and method under the conditions of a kind of seepage flow |
-
2015
- 2015-12-16 CN CN201521047564.7U patent/CN205262912U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334142A (en) * | 2015-12-16 | 2016-02-17 | 北京交通大学 | Experiment device for simulating shield mud membrane formation |
| CN108007827A (en) * | 2017-12-29 | 2018-05-08 | 上海三瑞高分子材料股份有限公司 | Slurry balance shield slurry penetration film forming experimental provision and method |
| CN108489892A (en) * | 2018-03-29 | 2018-09-04 | 华东交通大学 | Seabed Shield Tunneling experimental rig and method under the conditions of a kind of seepage flow |
| CN108489892B (en) * | 2018-03-29 | 2020-06-05 | 华东交通大学 | Submarine shield tunnel excavation test device and method under seepage condition |
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