An underwater cross-fault tunnel multi-power disaster simulation test device

Abstract

The application relates to the field of test simulation devices, and particularly discloses a multi-power disaster simulation test device for an underwater cross-fault tunnel, which comprises the following components: a multi-field coupling box body arranged above a base, wherein the multi-field coupling box body is spliced by a left box body and a right box body, and the left box body is connected to a rotary locking mechanism; sliding coupling connecting rods are distributed on the front and rear sidewalls of the multi-field coupling box body, the sliding coupling connecting rods pass through the through holes on the outer sidewalls of the left box body and the right box body in sequence, and the splicing surfaces of the left box body and the right box body are tightly extruded, and gaps exist between the sliding coupling connecting rods and the through holes; a load applicator is arranged on the sidewall of the multi-field coupling box body; a strike-slip dislocation driver is arranged below the right box body and perpendicular to the bottom surface of the right box body; and a dip-slip dislocation driver is arranged perpendicular to the front wall surface or the rear wall surface of the right box body. The simulation test device can realize stepless adjustment of the dip angle of a fracture surface, and can more truly simulate the fracture surface slip composite environment under actual working conditions.

Description

Technical Field

[0001] This invention relates to the field of experimental simulation devices, and in particular to an underwater multi-dynamic disaster simulation experimental device for cross-fault tunnels. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] Underwater tunnels, characterized by all-weather accessibility, concealed underground environments, minimal impact on the ecological environment, and significant strategic importance, serve as crucial channels connecting key nodes such as urban clusters, continents, islands, and straits, and have experienced rapid development in recent years. However, underwater tunnels, especially those spanning seas, face extremely complex geological conditions, such as the effects of unlimited seawater cover, frequent earthquakes, and highly corrosive environments, leading to frequent disasters during construction and operation, and even catastrophic accidents such as water inrush and sudden water surges. Therefore, in-depth research into the mechanisms of dynamic disasters in underwater tunnels spanning fault lines and the corresponding prevention and control measures is of great significance.

[0004] Physical model testing offers advantages such as controllable parameters, repeatable processes, and intuitive observation, making it a crucial method for studying this challenging problem. Currently, extensive research has been conducted on physical model tests targeting the mechanical characteristics of tunnels under complex stress states and complex fault slip coupling effects, as exemplified by patent documents CN108663180A and CN206540677U. Another example is patent document CN112858003A, which discloses a test device and method for simulating tunnel instability mechanisms caused by fault slippage, capable of simulating the three-dimensional static and dynamic loads and multi-fault bidirectional slip composite environment of tunnels under actual working conditions. However, existing test devices generally suffer from limitations in adapting to simulation requirements under different dip angle fracture surface conditions. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes an underwater multi-dynamic disaster simulation test device for cross-fault tunnels, which can achieve stepless adjustment of the fracture surface dip angle and more realistically simulate the complex environment of fracture surface slippage under actual working conditions. Specifically, the technical solution of this invention is as follows.

[0006] An underwater multi-dynamic disaster simulation test device for cross-fault tunnels includes: a base, a multi-field coupling box, sliding coupling rods, a load applicator, a slip-slip actuator, a tilt-slip actuator, and a rotation locking mechanism. The multi-field coupling box is positioned above the base and is a split structure composed of a left and a right box. Sliding coupling rods are distributed on the front and rear side walls of the multi-field coupling box, and these rods pass through through holes on the outer side walls of the left and right boxes, causing the joint surfaces of the two boxes to be tightly pressed together. There is a gap between any position on the side wall of the sliding coupling rod and the through hole. The load applicator is located on the side wall of the multi-field coupling box and is used to apply loads to the simulated specimen inside. The slip-slip actuator is located below the right box and perpendicular to its bottom surface, while the tilt-slip actuator is vertically positioned on the front or rear wall of the right box. The rotation locking mechanism is connected to the left housing, and it can drive the multi-field coupling housing to rotate in the vertical plane and stop locking in the rotated position.

[0007] Furthermore, the left side wall of the left housing and / or the right side wall of the right housing have construction openings to excavate channels in the simulated specimens therein to simulate tunnels. Optionally, the construction openings have covers that can be closed and opened.

[0008] Furthermore, a sliding sealing layer is provided between the splicing interface of the left and right boxes, which is fixed to the box wall surface of the left or right box.

[0009] Furthermore, the sliding sealing layer is composed of a flexible matrix and lubricating powder particles dispersed in the matrix. Optionally, the flexible matrix is ​​made of any one of rubber, silicone, etc. The lubricating powder is made of at least one of polytetrafluoroethylene, polyimide, polyetheretherketone, graphite, etc.

[0010] Furthermore, the left end of the sliding coupling rod is constrained at a through hole on the outer wall of the left housing, so that the two are connected. Optionally, the left end of the sliding coupling rod has a limiting member larger than the through hole, which is tightly pressed against the outer wall of the through hole.

[0011] Furthermore, the right end of the sliding coupling rod is connected to a fastener, and the fastener tightly presses the splicing surfaces of the left and right housings together.

[0012] Furthermore, it also includes a longitudinal and transverse coupling sliding component disposed at the right end of the sliding coupling link, comprising: a longitudinal slide rail, a longitudinal and transverse coupling slider, and a transverse slide rail. Specifically: the longitudinal slide rail is longitudinally fixed to the outer wall of the through hole on the outer wall of the right housing; the longitudinal groove on the left side wall of the longitudinal and transverse coupling slider is slidably connected to the longitudinal slide rail; and the transverse slide rail is slidably connected to the transverse groove on the right side wall of the longitudinal and transverse coupling slider. The right end of the sliding coupling link passes sequentially through the longitudinal slide rail, the longitudinal and transverse coupling slider, and the transverse slide rail before connecting to the fastener, causing the fastener to be pressed tightly against the right side wall of the transverse slide rail.

[0013] Furthermore, the rotary locking mechanism includes: a rotary support frame, an annular internal gear ring, a gear, and a drive motor. Specifically: two sets of rotary support frames are respectively disposed on the front and rear side walls of the left housing, and the rotary support frames are rotatably connected to the corresponding side walls to allow the left housing to rotate. Two sets of annular internal gear rings are respectively vertically fixed outside the front and rear side walls of the multi-field coupling housing. The gear is fixed to the left housing and meshes with the annular internal gear ring. The drive motor is connected to the gear and drives the gear to rotate, thereby moving it along the annular internal gear ring, thus causing the multi-field coupling housing to rotate.

[0014] Furthermore, it also includes an electromagnetic plate disposed on the front or rear wall of the right housing, wherein an electromagnet is provided, and the telescopic head of the tilting and sliding actuator contacts the electromagnetic plate. When energized, the electromagnet can be attracted and connected to the telescopic head.

[0015] Furthermore, it also includes a frame, which is fixed on the base, and the annular internal gear ring is vertically fixedly connected to the frame.

[0016] Furthermore, the base has a groove corresponding to the bottom of the multi-field coupling housing. The sliding misalignment actuator is located in this groove. Optionally, the sliding misalignment actuator is fixed to an "L"-shaped support plate located in the groove, and the upper end face of the support plate is fixedly connected to the left housing.

[0017] Furthermore, the sliding misalignment actuator and the tilting misalignment actuator can be devices capable of linear reciprocating motion, such as hydraulic cylinders and electric cylinders.

[0018] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0019] (1) The underwater cross-fault tunnel multi-dynamic disaster simulation test device of the present invention can enable the box to rotate at any angle through the cooperation between the rotation locking mechanism and the multi-field coupling box, so that the angle of the splicing surface (simulating the fault formed by displacement) between the left box and the right box (simulating the fault formed by displacement) relative to the horizontal plane can be adjusted at any angle. Thus, it can simulate faults under various working conditions without affecting the simulation test of the right box to achieve fault slip, thereby achieving the purpose of more realistically simulating the composite environment of fracture surface slip under actual working conditions.

[0020] (2) The underwater cross-fault tunnel multi-dynamic disaster simulation test device of the present invention utilizes the cooperation between the sliding coupling rod and the left and right boxes to enable the two boxes to both dock and slide relative to each other in the horizontal and vertical directions. This is because the present invention connects the two boxes together in series by utilizing the cooperation between the sliding coupling rod and the through holes on the side walls of the two boxes, while also creating a gap between the sliding coupling rod and the through holes. This gap can be cleverly used to provide space for the movement of the sliding coupling rod when the right box carries the sliding coupling rod in a misaligned motion, thus well meeting the technical requirements for the sliding coupling rod to perform reciprocating sliding misalignment in the horizontal and vertical directions. This allows the two boxes to maintain a good docking state while also conducting misalignment simulation experiments. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1 This is a front view of the underwater cross-fault tunnel multi-dynamic disaster simulation test device in the following embodiments.

[0023] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 3 This is a left view of the underwater cross-fault tunnel multi-dynamic disaster simulation test device in the following embodiments.

[0025] Figure 4 The following is a bottom view of the underwater cross-fault tunnel multi-dynamic disaster simulation test device in the embodiments below.

[0026] Figure 5 The following is a schematic diagram of the internal structure of the simulation test device in its usage state in the embodiments below.

[0027] The numbers in the above figures represent: 1-base, 2-multi-field coupling box, 3-sliding coupling link, 4-load applicator, 5-sliding misalignment actuator, 6-tilting misalignment actuator, 7-simulated specimen, 8-rotating support frame, 9-ring internal gear ring, 10-gear, 11-drive motor, 12-frame, 101-groove, 102-support plate, 201-left box, 202-right box, 203-through hole, 204-gap, 205-construction opening, 206-simulated tunnel, 207-fracture surface, 301-limiting component, 302-fastener, 303-longitudinal slide rail, 304-transverse and longitudinal coupling slider, 305-transverse slide rail. Detailed Implementation

[0028] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves. They do not limit the structure and are merely for the purpose of facilitating the description of this invention and simplifying the description. They do not indicate or imply that the device or component referred to needs to have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] The underwater multi-dynamic disaster simulation test device for cross-fault tunnels of the present invention will now be further described with reference to the accompanying drawings. Specifically, refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 The simulation test device includes: a base 1, a multi-field coupling box 2, a sliding coupling link 3, a load applicator 4, a slip-slip actuator 5, a tilt-slip actuator 6, and a rotation locking mechanism. The base 1 is horizontally positioned, and the multi-field coupling box 2 is positioned above the base 1. The multi-field coupling box 2 is a split structure composed of a left box 201 and a right box 202. The sliding of the joint surface between the two boxes allows for the construction of a simulated fault in the simulated specimen 7 within the multi-field coupling box 2, facilitating the simulation test of multi-dynamic disasters in cross-fault tunnels.

[0032] In this embodiment, both the left housing 201 and the right housing 202 adopt a detachable frame structure, with through holes 203 on their outer walls for engaging with the sliding coupling rod 3. The sliding coupling rod 3 is horizontally positioned (i.e., perpendicular to the splicing surfaces of the left housing 201 and the right housing 202). The sliding coupling rod 3 passes sequentially through the through holes 203 on the left housing 201 and the right housing 202, connecting them in series. The left end of the sliding coupling rod 3 has an integrated limiting member 301, the size of which is larger than the diameter of the through hole 203, so as to restrict the left end of the sliding coupling rod 3 to the leftmost through hole 203 on the outer wall of the left housing 201. The limiting member 301 is attached to the outer wall of the through hole 203, so that when the sliding coupling rod 3 is tightened, it exerts a pulling force on the left housing 201, bringing it into contact with the splicing surfaces of the right housing 202, facilitating sliding and shifting. Several layers of sliding coupling rods 3 are distributed on the front and rear side walls of the multi-field coupling box 2 to ensure the connection stability and balance of the left box 201 and the right box 202.

[0033] Furthermore, the diameter of the sliding coupling rod 3 is smaller than the diameter of the through hole 203. In this embodiment, while the sliding coupling rod 3 passes through the through hole 203, a gap 204 is maintained between any position of the side wall of the sliding coupling rod 3 and the through hole 203. The size of this gap 204 matches the amplitude / displacement of the sliding misalignment. The right end of the sliding coupling rod 3 is connected to a fastener 302. The fastener 302 can be a nut or an internally threaded cylinder, etc., which is fitted onto the right end of the sliding coupling rod 3 and the two are threaded together. Thus, the fastener 302 tightly presses the splicing surfaces of the left housing 201 and the right housing 202 together.

[0034] The multi-field coupling chamber 2 has several uniformly distributed load applicators 4 on each of its six side walls. These applicators apply loads to the simulated specimen 7 within the chamber, simulating the ground stress experienced by a cross-fault tunnel in actual engineering. The slip-slip actuator 5 is positioned below and perpendicular to the bottom surface of the right chamber 202. The slip-slip actuator 5 rotates synchronously with the multi-field coupling chamber 2, maintaining their perpendicular relative position. The slip-slip actuator 5 drives the left and right chambers 201 and 202 to reciprocate longitudinally along their joint surface. The tilt-slip actuator 6 is mounted on a support on the front or rear wall of the right chamber 202, with its telescopic head perpendicular to the wall surface. The tilt-slip actuator 6 drives the right chamber 202 to reciprocate laterally relative to the left chamber 201 along its joint surface, thus meeting the requirements for bidirectional slip simulation tests. Specifically, the sliding misalignment actuator 5 and the tilting misalignment actuator 6 can be devices capable of linear reciprocating motion, such as hydraulic cylinders, electric cylinders, or any other suitable devices.

[0035] The rotating locking mechanism includes: a rotating support frame 8, an annular internal gear ring 9, a gear 10, and a drive motor 11. Specifically, there are two sets of rotating support frames 8, respectively fixed to the base 1 on the front and rear side walls of the left housing 201. The upper ends of both sets of rotating support frames 8 are rotatably connected to the front and rear side walls of the left housing 201 via rotating shafts (see reference). Figure 4 The left housing 201 is supported in the air, facilitating the rotation of the multi-field coupling housing 2, thereby changing the angle between the splicing surface / or the fracture surface formed by the misalignment between the left housing 201 and the right housing 202 relative to the horizontal reference plane / the base 1. The annular internal gear ring 9 is a circular structure with tooth grooves distributed on its inner sidewall. There are two sets of the annular internal gear ring 9, which are vertically fixed on the base 1 outside the front and rear sidewalls of the multi-field coupling housing 2, and are parallel to the sidewalls. Gears 10 are connected to the lower left corner and the upper left corner of the front and rear sidewalls of the left housing 201, and the gears 10 mesh with the tooth grooves on the inner sidewall of the annular internal gear ring 9. The drive motor 11 is connected to the gears 10, thereby driving the gears 10 to rotate, and then moving along the annular internal gear ring 9, causing the multi-field coupling housing 2 to rotate. The aforementioned rotation locking mechanism not only enables the drive multi-field coupling box 2 to rotate in the vertical plane, but also stops and locks it in the rotated position, realizing the instantaneous adjustment and synchronous locking of the rotation angle of the drive multi-field coupling box 2.

[0036] When conducting a simulation test using the above-described device in this embodiment, the gear 10 is first driven to rotate the multi-field coupling box 2 until the left side wall of its left box 201 faces upward and is in a horizontal state. Then, the left side wall is removed and a similar material (i.e., the material used to simulate the rock mass where the tunnel is located in the actual project) is poured into it to fill the inner cavity of the multi-field coupling box 2. After the similar material solidifies and hardens, the left side wall of the left box 201 is reattached to the left box 201. After completion, the multi-field coupling box 2 is rotated again to the set tilt angle. Then, the cover on the construction port 205 on the left side wall of the left box 201 is opened, and a channel is drilled from the construction port 205 into the similar material inside as a simulated tunnel 206. The simulated specimen 7 for testing is formed in the multi-field coupling box 2. Then, the slip-slip actuator 5 is started to perform longitudinal reciprocating slip (e.g., Figure 5 (As indicated by the middle arrow). After completion, the sliding misalignment actuator 5 stops moving, and the tilting misalignment actuator 6 is activated to drive the right box 202 to reciprocate laterally relative to the left box 201, simulating the slippage and misalignment of a tunnel under ground stress in actual engineering, so as to provide theoretical guidance for actual engineering and prevent possible problems in advance. The sequence of longitudinal and lateral reciprocating misalignment can be changed as needed. During the test, the load applicator 4 synchronously applies a set load to the simulated specimen 7 to simulate the ground stress experienced by a cross-fault tunnel in actual engineering. Alternatively, the construction port 205 can be set on the right side wall of the right box 202, and the simulated tunnel 206 can be drilled from the right box 202.

[0037] The underwater cross-fault tunnel multi-dynamic disaster simulation test device of this embodiment utilizes the cooperation between the rotary locking mechanism and the multi-field coupling box 2 to achieve stepless adjustment of the inclination angle of the fracture surface 207. This more realistically simulates the composite environment of fracture surface slippage under actual working conditions, while avoiding the problem of affecting the right box 202's misalignment and thus preventing fault slippage simulation tests. On the other hand, through the special cooperation between the sliding coupling rod 3 and the left box 201 and right box 202, and by utilizing the gap 204 set between the sliding coupling rod 3 and the through hole 203, space is provided for the movement of the sliding coupling rod 3 when the right box 202 carries the sliding coupling rod 3 in misalignment. Moreover, it can well meet the technical requirements of the sliding coupling rod 3 to perform reciprocating sliding misalignment in both the horizontal and vertical directions, realizing that the two boxes can maintain a good docking state while also being able to misalign.

[0038] In another implementation, refer to Figure 1The base 1 of the underwater cross-fault tunnel multi-dynamic disaster simulation test device in the above embodiment also has a groove 101, which corresponds to the bottom of the multi-field coupling box 2, so that the slippage drive 5 can be set in the groove 101, making the structure of the test device more compact and helping to reduce the overall volume and cost of the test device.

[0039] In another implementation, refer to Figure 1 and Figure 4 The underwater multi-dynamic disaster simulation test device for cross-fault tunnels in the above embodiment also includes an "L"-shaped support plate 102 composed of a longitudinal plate and a transverse plate. The upper end of the longitudinal plate is fixed to the bottom surface of the left box 201, and the transverse plate is located below the bottom surface of the right box 202. The sliding misalignment actuator 5 is fixed to the transverse plate, and the telescopic head of the sliding misalignment actuator 5 is aligned with the bottom surface of the right box 202 but the two are not connected, so that the sliding misalignment actuator 5 can move synchronously with the multi-field coupling box 2, ensuring that the relative position of the two remains unchanged, while not affecting the transverse reciprocating misalignment of the right box 202.

[0040] In another embodiment, the underwater cross-fault tunnel multi-dynamic disaster simulation test device of the above embodiment further includes a sliding sealing layer disposed between the splicing interface of the left box 201 and the right box 202, which is fixed to the box wall surface of the left box 201 or the right box 202. The sliding sealing layer is composed of a flexible matrix and lubricating powder particles dispersed in the matrix. The flexible matrix can be made of materials such as rubber and silicone. The lubricating powder can be made of materials such as polytetrafluoroethylene, polyimide, polyetheretherketone, and graphite. The sliding sealing layer with these characteristics not only provides a good seal between the splicing interface of the left box 201 and the right box 202, but also effectively reduces the resistance to sliding and misalignment between them, avoiding wear on the left box 201 and the right box 202 and preventing jamming that may occur during sliding and misalignment.

[0041] In another implementation, refer to Figure 2The underwater cross-fault tunnel multi-dynamic disaster simulation test device of the above embodiment also includes a longitudinal and transverse coupling sliding component, including: a longitudinal slide rail 303, a longitudinal and transverse coupling slider 304, and a transverse slide rail 305. Specifically: the longitudinal slide rail 303 is longitudinally fixed to the outer wall of the rightmost through hole 203 on the outer wall of the right housing 202; the longitudinal groove on the left side wall of the longitudinal and transverse coupling slider 304 is slidably connected to the longitudinal slide rail 303; and the transverse slide rail 305 is slidably connected to the transverse groove on the right side wall of the longitudinal and transverse coupling slider 304. The right end of the sliding coupling link 3 passes sequentially through the longitudinal slide rail 303, the longitudinal and transverse coupling slider 304, and the transverse slide rail 305, and then connects to the fastener 302, causing the fastener 302 to be pressed tightly against the right side wall of the transverse slide rail 305. In this embodiment, the longitudinal and transverse coupling sliding component ensures that the sliding coupling link 3 does not move with the movement of the right housing 202 during the aforementioned longitudinal and transverse reciprocating motions. This cleverly avoids the problem of the sliding coupling link 3 needing to bend repeatedly due to the motion, thus preventing potential damage to the sliding coupling link 3.

[0042] In another embodiment, the underwater multi-dynamic disaster simulation test device for fault-crossing tunnels described above further includes an electromagnetic plate disposed on the front or rear wall of the right chamber 202, wherein an electromagnet is provided, and the telescopic head of the tilting and sliding actuator 6 contacts the electromagnetic plate. When the multi-field coupling chamber 2 needs to rotate, disconnecting the power supply to the electromagnet allows the tilting and sliding actuator 6 to move relative to the electromagnetic plate. When the right chamber 202 needs to perform lateral reciprocating sliding, turning on the power supply to the electromagnet allows the telescopic head to be attracted and connected to the electromagnetic plate, thus ensuring lateral reciprocating sliding while avoiding the problem of the multi-field coupling chamber 2 being unable to rotate due to the tilting and sliding actuator 6 being in a fixed state. Furthermore, a connecting plate can be fixed to the telescopic head of the tilting and sliding actuator 6 to increase the contact area with the electromagnetic plate, allowing for better attraction and connection when the power is turned on.

[0043] In another implementation, refer to Figure 1 and Figure 3 The underwater cross-fault tunnel multi-dynamic disaster simulation test device of the above embodiment also includes a frame 12, which is vertically fixed on the base 1, and the annular internal gear ring 9 is vertically fixedly connected to the frame 12.

[0044] Finally, it should be noted that any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention. Although specific embodiments of this invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this invention are still within the scope of protection of this invention.

Claims

1. A multi-dynamic disaster simulation test device for underwater tunnels crossing fault lines, characterized in that, include: A multi-field coupling box is set above the base, and the multi-field coupling box is a split structure composed of a left box and a right box. A load applicator is installed on the side wall of the multi-field coupling box; The sliding coupling link is distributed on the front and rear side walls of the multi-field coupling box. The sliding coupling link passes through the through holes on the outer side walls of the left and right boxes in sequence, so that the splicing surfaces of the two are tightly pressed together. There is a gap between any position of the side wall of the sliding coupling link and the through hole. The sliding misalignment actuator is located below the right housing and perpendicular to its bottom surface; The tilting and sliding actuator is vertically installed on the front or rear wall of the right housing. A rotary locking mechanism, which is connected to the left housing, is used to drive the multi-field coupling housing to rotate in the vertical plane and stop locking in the rotated position; The rotating locking mechanism includes: a rotating support frame, an annular internal gear ring, a gear, and a drive motor; wherein: there are two sets of rotating support frames, respectively disposed on the front and rear side walls of the left housing, and the rotating support frames are rotatably connected to the corresponding side walls; there are two sets of annular internal gear rings, respectively vertically fixed outside the front and rear side walls of the multi-field coupling housing; the gear is fixed on the left housing and meshes with the annular internal gear ring; the drive motor is connected to the gear; The right end of the sliding coupling link is connected to a fastener, and the fastener tightly presses the splicing surfaces of the left and right housings together. It also includes a longitudinal and transverse coupling sliding component located at the right end of the sliding coupling link, comprising: a longitudinal slide rail, a longitudinal and transverse coupling slider, and a transverse slide rail. The longitudinal slide rail is longitudinally fixed to the outer wall of the through hole on the outer wall of the right housing. The longitudinal groove on the left side wall of the longitudinal and transverse coupling slider is slidably connected to the longitudinal slide rail. The transverse slide rail is slidably connected to the transverse groove on the right side wall of the longitudinal and transverse coupling slider. The right end of the sliding coupling link passes sequentially through the longitudinal slide rail, the longitudinal and transverse coupling slider, and the transverse slide rail before connecting to the fastener, which is pressed tightly against the right side wall of the transverse slide rail.

2. The underwater cross-fault tunnel multi-dynamic disaster simulation test device according to claim 1, characterized in that, The left side wall of the left housing and / or the right side wall of the right housing have construction openings, and the construction openings have covers that can be closed and opened.

3. The underwater cross-fault tunnel multi-dynamic disaster simulation test device according to claim 1, characterized in that, A sliding sealing layer is provided between the splicing interface of the left and right boxes, which is fixed to the box wall of the left or right box.

4. The underwater cross-fault tunnel multi-dynamic disaster simulation test device according to claim 3, characterized in that, The sliding sealing layer is composed of a flexible matrix and lubricating powder particles dispersed in the matrix; the flexible matrix is ​​made of any one of rubber and silicone; the lubricating powder is made of at least one of polytetrafluoroethylene, polyimide, polyetheretherketone, and graphite.

5. The underwater cross-fault tunnel multi-dynamic disaster simulation test device according to claim 1, characterized in that, The left end of the sliding coupling rod is restricted to the through hole on the outer side wall of the left housing.

6. The underwater cross-fault tunnel multi-dynamic disaster simulation test device according to claim 1, characterized in that, The left end of the sliding coupling link has a limiting member with a size larger than the through hole, which is tightly pressed against the outer wall of the through hole.

7. The underwater multi-dynamic disaster simulation test device for cross-fault tunnels according to any one of claims 1-6, characterized in that, It also includes an electromagnetic plate disposed on the front or rear wall of the right housing, wherein an electromagnet is disposed, and the telescopic head of the tilting and sliding actuator contacts the electromagnetic plate; the electromagnet can be attracted and connected to the telescopic head after being energized.

8. The underwater multi-dynamic disaster simulation test device for cross-fault tunnels according to any one of claims 1-6, characterized in that, The base has a groove corresponding to the bottom of the multi-field coupling box; the sliding misalignment actuator is located in the groove.

9. The underwater multi-dynamic disaster simulation test device for cross-fault tunnels according to any one of claims 1-6, characterized in that, The base has a groove corresponding to the bottom of the multi-field coupling box. The sliding misalignment actuator is fixed on an "L"-shaped support plate located in the groove, and the upper end face of the support plate is fixedly connected to the left box.

Images