A prefabricated anti-deformation seepage circulation device for large-scale geotechnical model tests

Abstract

This utility model relates to a prefabricated anti-deformation seepage circulation device for large-scale geotechnical model tests, belonging to the technical field of geotechnical engineering model testing equipment. It includes a model box body for filling simulated soil media, a seepage regulating water tank detachably installed on the inner wall of the model box body, an external circulation system for water delivery, and an overall tilt adjustment system installed on the outer bottom surface of the model box body for achieving overall unilateral lifting of the model box body. The overall tilt adjustment system includes a hinged support installed on the model box body, a support base rotatably connected to the hinged support, and a hydraulic jack installed on the support base for driving the model box body to adjust its tilt angle. This utility model has the effect of simulating slope infiltration and is suitable for the needs of large-size, high earth pressure, and high-precision geotechnical model tests.

Description

Technical Field

[0001] This utility model relates to the technical field of geotechnical engineering model testing equipment, and in particular to a prefabricated anti-deformation seepage circulation device for large-scale geotechnical model testing. Background Technology

[0002] Currently, in large-scale indoor model tests for geotechnical engineering, accurate simulation of the groundwater seepage field is a key condition for evaluating soil mechanical response, seepage characteristics, and structural stability.

[0003] Existing large-scale geotechnical model test chambers have limited application range and limited testing conditions when conducting high earth pressure and large-scale seepage tests. Moreover, most existing model chambers are fixed horizontal structures, which cannot simulate real geological conditions such as slope infiltration, inclined aquifers, and monoclinic structures, making it difficult to meet the testing needs of complex engineering problems.

[0004] In response to the aforementioned technologies, there is an urgent need to develop a deformation-resistant seepage circulation device that can simulate slope infiltration and is suitable for use in large-scale, high-earth-pressure, and high-precision geotechnical model tests. Utility Model Content

[0005] In order to simulate slope infiltration and meet the requirements of large-scale, high earth pressure, and high-precision geotechnical model tests, this utility model provides a prefabricated anti-deformation seepage circulation device for large-scale geotechnical model tests.

[0006] This utility model provides a prefabricated anti-deformation seepage circulation device for large-scale geotechnical model tests, which adopts the following technical solution:

[0007] An assembled anti-deformation seepage circulation device for large-scale geotechnical model tests includes a model box body for filling simulated soil medium, a seepage regulating water tank detachably installed on the inner wall of the model box body, an external circulation system for water conveyance, and an overall tilt angle adjustment system installed on the outer bottom surface of the model box body for realizing the overall unilateral lifting of the model box body.

[0008] The overall tilt adjustment system includes a hinged support mounted on the main body of the model box, a support base rotatably connected to the hinged support, and a hydraulic jack mounted on the support base for driving the main body of the model box to adjust the tilt angle.

[0009] The seepage regulating water tank includes an internal pressure-resistant support frame for reinforcing the seepage regulating water tank and an active compression sealing mechanism for sealing the bottom of the seepage regulating water tank.

[0010] By adopting the above technical solutions, the main body of the model box can achieve overall unilateral lifting and angle adjustment through the overall tilt adjustment system, thereby simulating various real geological conditions such as slope infiltration, inclined aquifers, and monoclinic structures, broadening the scope of application of the test and meeting the needs of complex engineering tests.

[0011] Optionally, the top of the seepage regulating water tank is an open structure, and there are two seepage regulating water tanks symmetrically arranged on the main body of the model box;

[0012] The seepage regulating water tank also includes a tank shell and a permeable panel; the tank shell is installed on the inner wall of the model tank body, the permeable panel is installed on the tank shell, and the pressure-resistant support frame is installed between the tank shell and the permeable panel to reinforce and ensure stability.

[0013] By adopting the above technical solution, two symmetrically arranged seepage regulating water tanks can form a stable seepage field inside the model box. At the same time, the open top facilitates observation, water replenishment and dredging, and the internal installation of a pressure-resistant support frame can effectively resist high lateral earth pressure, thereby ensuring that the water tanks do not deform and the water flow channels are unobstructed.

[0014] Optionally, the active pressing and sealing mechanism includes a cantilevered load-bearing lug, a vertical threaded pressure rod, a rigid pressure base plate, and a flexible sealing gasket;

[0015] The rigid pressure base plate is located at the inner bottom of the seepage regulating water tank, the flexible sealing gasket is located at the bottom of the rigid pressure base plate, the cantilever bearing lug is installed on the side wall of the tank shell, the upper end of the vertical threaded pressure rod passes through and is threaded to the cantilever bearing lug, and the lower end of the vertical threaded pressure rod is equipped with a pressure plate for squeezing the rigid pressure base plate.

[0016] By adopting the above technical solution, the vertical threaded pressure rod can be twisted from the top of the water tank to drive the pressure plate to descend, thereby applying active mechanical pre-tightening force to the bottom rigid pressure plate and flexible sealing gasket for sealing. This overcomes the problems of bottom lifting and leakage caused by high water head and soil settlement, achieves highly reliable bottom sealing, and prevents piping and leakage.

[0017] Optionally, the cantilevered load-bearing ear plate is provided with a locking component for locking the vertical threaded pressure bar;

[0018] The locking assembly includes a locking block, a locking half-ring, a moving block, and a compression spring; the moving block is slidably mounted on the cantilevered bearing lug, the locking half-ring is mounted on the moving block, the locking block is mounted on the locking half-ring and used to lock the vertical threaded pressure rod, and the compression spring is disposed between the moving block and the cantilevered bearing lug; the compression spring drives the locking block to always have a tendency to insert into the vertical threaded pressure rod for locking.

[0019] By adopting the above technical solution, the locking block, locking half ring and compression spring can lock and position the vertical threaded rod, preventing the vertical threaded rod from rotating and loosening during the test, thereby effectively maintaining a constant bottom sealing pressure and improving the long-term operational stability of the device.

[0020] Optionally, a rotating wheel is mounted on the top of the vertical threaded pressure bar, and a handle is detachably mounted on the top of the rotating wheel.

[0021] By adopting the above technical solution, operators can use the handle to rotate the vertical threaded pressure rod more effortlessly, thereby achieving rapid adjustment of the sealing pressure. At the same time, the detachable handle makes it easier to store and use.

[0022] Optionally, the seepage regulating water tank has a flat rectangular structure, the height of the seepage regulating water tank is adapted to the height of the model box body, and the thickness of the seepage regulating water tank is less than the length and height of the model box body; the surface of the permeable panel is covered with a geotextile filter.

[0023] By adopting the above technical solutions, the flat structure significantly reduces the space occupied in the test and improves the effective utilization rate of the model box. At the same time, the geotextile filter can effectively block soil particles from entering the water tank, prevent channel blockage, and ensure water permeability and reverse filtration effects.

[0024] Optionally, the length of the seepage regulating water tank is less than the internal width of the model box body, and a side sealing structure is provided between the two vertical edges of the seepage regulating water tank and the side wall of the model box body.

[0025] By adopting the above technical solution, the installation gap between the water tank and the side wall of the model box can be filled, the short-circuit channel of water flow along the wall can be blocked, and the water flow can be forced to pass through the soil medium evenly, ensuring that the seepage field is real and reliable.

[0026] Optionally, the side sealing structure includes any one of a rigid filler block, an elastic waterstop strip, and an inflatable rubber sealing bladder to fill the gap and block the water flow short circuit.

[0027] By adopting the above technical solution, the sealing form can be flexibly selected according to the test conditions. The combination of rigid and flexible sealing provides a stable sealing effect, completely eliminates boundary seepage short circuits, and improves the accuracy of test data.

[0028] Optionally, the seepage regulating water tank includes an inlet water tank and an outlet water tank; the external circulation system includes a high-level water supply device connected to the inlet water tank and a low-level drainage device connected to the outlet water tank.

[0029] By adopting the above technical solutions, a stable water circulation system is formed between the upstream and downstream, which can control the water level and hydraulic gradient, and meet the seepage test requirements of different groundwater levels and different hydraulic gradients.

[0030] Optionally, the back and sides of the seepage regulating water tank are provided with several inlet and outlet ports, which pass through the reserved holes of the model box body and are connected to the high-level water supply device and the low-level drainage device.

[0031] By adopting the above technical solution, the pipeline connection is firm and easy to disassemble and assemble, which can ensure stable connection between the external circulation system and the internal water tank, thereby ensuring smooth water supply and drainage and maintaining long-term stability of the seepage field.

[0032] In summary, this utility model has at least one of the following beneficial technical effects:

[0033] 1. The main body of the model box can be raised and adjusted on one side as a whole through the overall tilt adjustment system, thereby simulating various real geological conditions such as slope infiltration, inclined aquifer, and monoclinic structure, broadening the scope of application of the test and meeting the needs of complex engineering tests;

[0034] 2. The vertical threaded rod can be twisted from the top of the water tank to drive the pressure plate to descend, thereby applying active mechanical pre-tightening force to the rigid pressure plate and flexible sealing gasket at the bottom for sealing. This overcomes the problems of bottom lifting and leakage caused by high water head and soil settlement, achieving a highly reliable bottom seal and preventing piping and leakage.

[0035] 3. The locking block, locking half ring, and compression spring can lock and position the vertical threaded rod, preventing the vertical threaded rod from rotating and loosening during the test, thereby effectively maintaining a constant bottom sealing pressure and improving the long-term operational stability of the device. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a seepage circulation system;

[0037] Figure 2 This is a schematic diagram of a prefabricated anti-deformation seepage circulation device used for large-scale geotechnical model tests;

[0038] Figure 3 This is a cross-sectional view of a prefabricated anti-deformation seepage circulation device used for large-scale geotechnical model tests;

[0039] Figure 4 yes Figure 3 A magnified view of part A in the middle.

[0040] The parts referred to by the numbers in the attached diagrams are as follows: 1. Model box body; 2. Seepage regulating water tank; 21. Box shell; 22. Permeable panel; 23. Pressure-resistant support frame; 24. Replaceable filter layer; 25. Inlet water tank; 26. Outlet water tank; 3. Side sealing structure; 4. External circulation system; 41. High-level water supply device; 42. Low-level drainage device; 5. Active pressing sealing mechanism; 51. Cantilevered load-bearing ear plate; 52. Vertical threaded pressure rod; 53. Rigid pressure base plate; 54. Flexible sealing gasket; 55. Rotating wheel; 56. Handle; 57. Pressure plate; 6. Locking assembly; 61. Locking block; 62. Locking half ring; 63. Moving block; 64. Compression spring; 65. Moving groove; 66. Locking groove; 7. Overall tilt adjustment system; 71. Hinge support; 72. Support base; 73. Hydraulic jack; 74. Connecting support. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0042] This utility model discloses an assembled anti-deformation seepage circulation device for large-scale geotechnical model tests.

[0043] Reference Figure 1 as well as Figure 2 An assembled anti-deformation seepage circulation device for large-scale geotechnical model tests includes a model box body 1, a seepage regulating water tank 2, an external circulation system 4, and an overall tilt angle adjustment system 7.

[0044] The model box body 1 is used to fill simulated soil media. Two seepage regulating water tanks 2 are symmetrically arranged on the model box body 1, and both seepage regulating water tanks 2 are detachable and installed on the inner wall of the model box body 1. An external circulation system 4 connects to the seepage regulating water tanks 2 and is used for water supply and drainage. An overall tilt adjustment system 7 is fixedly installed on the outer bottom surface of the model box body 1 and is used to achieve overall unilateral lifting of the model box body 1.

[0045] The main body of the model box 1 is a large rigid model box with internal net dimensions of 2.45m (length) × 2.45m (width) × 2.0m (height). To simulate groundwater seepage within the main body of the model box 1, seepage tanks are installed on two opposite side walls (upstream and downstream) using locking bolts. Additionally, the main body of the model box 1 has perforated plates with several 4mm diameter holes and nylon mesh for filtration.

[0046] Reference Figure 2The seepage regulating water tank 2 includes a tank shell 21, a permeable panel 22, and a pressure-resistant support frame 23. The tank shell 21 is fixedly installed on the inner wall of the model box body 1, the permeable panel 22 is fixedly installed on the tank shell 21, and the pressure-resistant support frame 23 is installed between the tank shell 21 and the permeable panel 22 to reinforce and ensure stability. The seepage regulating water tank 2 has external dimensions of 2.3m (length) × 0.1m (thickness) × 1.98m (height) and is equipped with a replaceable filter layer 24 inside.

[0047] The outer shell 21 is made of 0.5mm thick steel plate welded into a flat box-shaped structure with a closed back panel and an open front. The upper part of the back panel is welded with hanging ears for easy hoisting and disassembly.

[0048] Permeable panel 22: Made of 5mm thick perforated stainless steel plate, welded and fixed to the front opening of the box, with a hole diameter of 4mm, a hole spacing of 5mm, and a plum blossom pattern, with a water permeability of more than 30%.

[0049] The compressive strength support frame 23 is made of hollow square steel pipes with a cross-section of 30mm×30mm×3mm, welded into a grid structure with vertical ribs spaced at 532mm and horizontal ribs spaced at 457mm. The rear end of the compressive strength support frame 23 is fully welded to the inner wall of the water tank back plate, and the front end is in close contact with the inner side of the permeable panel 22 and spot-welded for fixation. When lateral soil pressure acts on the permeable panel 22, it is transmitted through the compressive strength support frame 23 to the back plate and the main body of the model box 1, thus ensuring a constant water tank thickness and unobstructed internal water flow.

[0050] Replaceable filter layer 24: Double layer of 300g / m² is laid on the inner side of the perforated plate. 2 The long-filament nonwoven geotextile is secured at the edges with stainless steel strips and bolts to prevent it from falling off under high water pressure and to effectively block soil particles from entering the water tank.

[0051] Reference Figure 3 Meanwhile, since the length of the seepage regulating water tank 2 is less than the inner width of the model box, and there are installation and operation gaps on both sides, this embodiment adopts the following connection and sealing method: the inlet and outlet pipes (equipped with flanges) on the back of the water tank pass directly through the reserved holes on the wall of the model box, and are locked with nuts on the outside of the model box body 1 to achieve the initial positioning and fixation of the seepage regulating water tank 2. The side sealing structure 3 is used to seal and prevent water flow from short-circuiting along the gaps on both sides. The side sealing structure 3 includes any one of rigid filler blocks, elastic waterstop strips, and inflatable rubber sealing bladders to fill the gaps and block the water flow from short-circuiting.

[0052] In this embodiment, the side sealing structure 3 consists of a rigid PVC pad (75mm×100mm×1980mm) and a water-swellable sealing strip. During the backfilling and compaction process, the sealing strip expands under pressure, completely sealing the lateral gaps and forcing water to flow only vertically through the permeable panel 22 into the soil.

[0053] Reference Figure 1 The seepage regulating water tank 2 also includes an inlet water tank 25 and an outlet water tank 26. The external circulation system 4 includes a high-level water supply device 41 and a low-level drainage device 42. The high-level water supply device 41 is the high-level water tank, and the low-level drainage device 42 is the low-level water tank. The inlet water tank 25 has an inlet on one side, and the outlet water tank 26 has an outlet on one side. The high-level water supply device 41 is connected to the inlet water tank 25 by connecting PVC water pipes, and the low-level drainage device 42 is connected to the outlet water tank 26 to realize water supply and drainage. At the same time, the high-level water supply device 41 is an adjustable-height high-level water tank, and is connected to the downstream inlet of the upstream seepage water tank by a DN32 steel wire reinforced hose. The upstream drainage interface of the downstream seepage water tank is connected to the ground low-level drainage device 42. At the same time, the outflow is controlled by a valve, thereby forming a stable hydraulic gradient in the soil of the model box, thus constructing a planar seepage field with a stable structure and tight boundary sealing.

[0054] Furthermore, in response to the problems of piping and leakage at the bottom under high water pressure and the obstruction of observation by the traditional closed top cover of the water tank, this embodiment uses an active compression sealing mechanism 5 to achieve compression sealing.

[0055] Reference Figure 3 The active pressing sealing mechanism 5 includes a cantilevered load-bearing ear plate 51, a vertical threaded pressure rod 52, a rigid pressure base plate 53, and a flexible sealing gasket 54.

[0056] A flexible sealing gasket 54 is fixedly installed on the inner bottom wall of the seepage regulating water tank 2. A rigid pressure base plate 53 is located above the flexible sealing gasket 54. A cantilevered load-bearing ear plate 51 is fixedly installed on the side wall of the tank shell 21. The upper end of the vertical threaded pressure rod 52 passes through and is threadedly connected to the cantilevered load-bearing ear plate 51. A pressure plate 57 for pressing the rigid pressure base plate 53 is fixedly installed at the lower end of the vertical threaded pressure rod 52. The rigid pressure base plate 53 is made of 10mm thick stainless steel, and the flexible sealing gasket 54 is made of 5mm thick neoprene rubber. A rotating wheel 55 is installed on the top of the vertical threaded pressure rod 52. A handle 56 is fixedly installed on the top of the rotating wheel 55 by a locking bolt. The handle 56 is designed based on the lever principle, making it easy for the operator to rotate the vertical threaded pressure rod 52.

[0057] Reference Figure 3 as well as Figure 4A locking assembly 6 for locking the vertical threaded rod 52 is provided on the cantilevered support plate 51. The locking assembly 6 includes a locking block 61, a locking half-ring 62, a moving block 63, and a compression spring 64. A moving groove 65 is provided on the cantilevered support plate 51, and the moving block 63 is slidably installed in the moving groove 65. The locking half-ring 62 is fixedly installed on the moving block 63, and the locking block 61 is fixedly installed on the side of the locking half-ring 62 near the vertical threaded rod 52. A locking groove 66 is provided on the vertical threaded rod 52, and the locking block 61 is movably inserted into the locking groove 66. One end of the compression spring 64 is fixedly connected to the side wall of the moving groove 65, and the other end of the compression spring 64 is fixedly connected to the moving block 63. The compression spring 64 drives the locking block 61 to always have the tendency to insert into the locking groove 66 to lock the vertical threaded rod 52.

[0058] Meanwhile, in order to simulate the working conditions of inclined aquifers such as monoclinic structures and slope groundwater, this embodiment can use an overall tilt angle adjustment system 7 to meet the working conditions.

[0059] Reference Figure 2 The overall tilt adjustment system 7 includes a hinged support 71, a support base 72, and a hydraulic jack 73. The hinged support 71 is fixedly installed on the model box body 1, and the support base 72 is rotatably connected to the hinged support 71. The hydraulic jack 73 is hinged to the support base 72, and a connecting support 74 is hinged to the output end of the hydraulic jack 73. The connecting support 74 is fixedly installed on the model box body 1.

[0060] The implementation principle of the prefabricated anti-deformation seepage circulation device for large-scale geotechnical model testing according to this utility model embodiment is as follows: During operation, two seepage regulating water tanks 2 are symmetrically hoisted into the inner wall of the model box body 1. Then, the inlet and outlet interfaces are locked and fixed from the outside, and the side sealing structure 3 is filled. Then, by pulling the moving block 63, it moves along the moving groove 65. At this time, the moving block 63 compresses the compression spring 64, which drives the locking half ring 62 and the locking block 61 to move along the moving groove 65 as well. This causes the locking block 61 to exit the locking groove 66, so that the locking block 61 no longer locks the vertical threaded pressure rod 52. Then, the detachable handle 56 drives the vertical threaded pressure rod 52 to drive the pressure plate 57 to descend, so that the pressure plate 57 presses the bottom flexible sealing gasket 54. Then, the moving block 63 is released. At this time, the compression spring 64 pushes the locking block 61 to insert into the new locking groove 66 to lock the vertical threaded pressure rod 52, thereby forming a full boundary seal and preventing leakage and water flow short circuit.

[0061] Then, the soil is filled into the main body 1 of the model box. At this time, the hydraulic jack 73 is lowered to keep the model box horizontal. The soil is filled and compacted in layers. During the test, the hydraulic jack 73 is activated to raise the model box to the set tilt angle. The external circulation system 4 is turned on, the high-level water supply device 41 supplies water, and the low-level drainage device 42 drains water, forming a stable seepage field in the soil. After the test, the locking and sealing are released, and the seepage regulating water tank 2 is lifted out as a whole for cleaning and replacing the filter screen. In addition, the internal compressive support frame 23 of the seepage regulating water tank 2 transmits and resists lateral soil pressure, ensuring that the thin-walled box does not deform.

[0062] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An assembled anti-deformation seepage circulation device for large geotechnical model test, characterized in that: It includes a model box body (1) for filling simulated soil medium, a seepage regulating water tank (2) that can be detachably installed on the inner wall of the model box body (1), an external circulation system (4) for water conveyance, and an overall tilt adjustment system (7) installed on the outer bottom surface of the model box body (1) for realizing the overall unilateral lifting of the model box body (1). The overall tilt adjustment system (7) includes a hinged support (71) installed on the model box body (1), a support base (72) rotatably connected to the hinged support (71), and a hydraulic jack (73) installed on the support base (72) and used to drive the model box body (1) to adjust the tilt angle. The seepage regulating water tank (2) includes an internal pressure-resistant support frame (23) for reinforcing the seepage regulating water tank (2) and an active compression sealing mechanism (5) for sealing the bottom of the seepage regulating water tank (2). 2.The assembled anti-deformation seepage circulation device for large geotechnical model test of claim 1, wherein: The top of the seepage regulating water tank (2) is an open structure, and there are two seepage regulating water tanks (2) symmetrically arranged on the main body of the model box (1). The seepage regulating water tank (2) also includes a tank shell (21) and a permeable panel (22); the tank shell (21) is installed on the inner wall of the model box body (1), the permeable panel (22) is installed on the tank shell (21), and the pressure-resistant support frame (23) is installed between the tank shell (21) and the permeable panel (22) to reinforce and ensure stability.

3. The assembled anti-deformation seepage circulation device for large geotechnical model test according to claim 2, characterized in that: The active pressing and sealing mechanism (5) includes a cantilevered load-bearing ear plate (51), a vertical threaded pressure rod (52), a rigid pressure base plate (53), and a flexible sealing gasket (54). The rigid pressure base plate (53) is located at the bottom of the seepage regulating water tank (2), the flexible sealing gasket (54) is located at the bottom of the rigid pressure base plate (53), the cantilever bearing ear plate (51) is installed on the side wall of the outer shell (21) of the tank, the upper end of the vertical threaded pressure rod (52) passes through and is threaded to the cantilever bearing ear plate (51), and the lower end of the vertical threaded pressure rod (52) is equipped with a pressure plate (57) for squeezing the rigid pressure base plate (53).

4. The assembled anti-deformation seepage circulation device for large geotechnical model test according to claim 3, characterized in that: The cantilevered load-bearing ear plate (51) is provided with a locking component (6) for locking the vertical threaded pressure bar (52). The locking assembly (6) includes a locking block (61), a locking half-ring (62), a moving block (63), and a compression spring (64); the moving block (63) is slidably mounted on the cantilevered load-bearing ear plate (51), the locking half-ring (62) is mounted on the moving block (63), the locking block (61) is mounted on the locking half-ring (62) and is used to lock the vertical threaded pressure rod (52), and the compression spring (64) is disposed between the moving block (63) and the cantilevered load-bearing ear plate (51); the compression spring (64) drives the locking block (61) to always have the tendency to insert into the vertical threaded pressure rod (52) for locking.

5. The assembled anti-deformation seepage circulation device for large geotechnical model test according to claim 4, characterized in that: The top of the vertical threaded pressure bar (52) is equipped with a rotating wheel (55), and the top of the rotating wheel (55) is detachably equipped with a handle (56).

6. The assembled anti-deformation seepage circulation device for large geotechnical model test according to claim 2, characterized in that: The seepage regulating water tank (2) is a flat cuboid structure. The height of the seepage regulating water tank (2) is adapted to the height of the model box body (1). The thickness of the seepage regulating water tank (2) is less than the length and height of the model box body (1). The surface of the permeable panel (22) is covered with a geotextile filter.

7. The assembled anti-deformation seepage circulation device for large geotechnical model test according to claim 1, characterized in that: The length of the seepage regulating water tank (2) is less than the internal width of the model box body (1), and a side sealing structure (3) is provided between the two vertical edges of the seepage regulating water tank (2) and the side wall of the model box body (1). 8.The assembled anti-deformation seepage circulation device for large geotechnical model test of claim 7, characterized in that: The side sealing structure (3) includes any one of a rigid filler block, an elastic waterstop strip, and an inflatable rubber sealing bladder to fill the gap and block the water flow short circuit. 9.The assembled anti-deformation seepage circulation device for large geotechnical model test of claim 2, characterized in that: The seepage regulating water tank (2) includes an inlet water tank (25) and an outlet water tank (26); the external circulation system (4) includes a high-level water supply device (41) connected to the inlet water tank (25) and a low-level drainage device (42) connected to the outlet water tank (26).

10. A prefabricated anti-deformation seepage circulation device for large-scale geotechnical model tests according to claim 9, characterized in that: The back and sides of the seepage regulating water tank (2) are provided with several inlet and outlet interfaces. The inlet and outlet interfaces pass through the reserved holes of the model box body (1) and are connected to the high-level water supply device (41) and the low-level drainage device (42).

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