Simulation test device and test method for wave load fatigue failure of coast rock landslide slip zone

Abstract

The invention discloses a coast rock landslide slip zone wave load fatigue failure simulation test device and method in the technical field of ocean engineering geology, the coast rock landslide slip zone wave load fatigue failure simulation test device comprises a bearing table and a computer, a model box is arranged at the top of the bearing table, and a wave control system is arranged on the left side in the model box; a landslide model system and a data acquisition system are arranged on the inner right side of the model box, and the wave control system and the data acquisition system are connected with a computer. According to the invention, a simulation test is carried out by controlling conditions and parameters such as wave parameters, a landslide slope angle, landslide dead weight, a slip band angle, slip band roughness, slip band filling material types and the like, and relative vertical and horizontal displacement and stress conditions of a slip band are monitored in real time; the deformation failure process rule and stress strain parameters of the landslide slip zone under the continuous wave load effect are obtained, and then theoretical and technical support is provided for stability evaluation, prediction and prevention and control engineering design of coast rock landslide.

Description

Technical Field

[0001] This invention relates to the field of marine engineering geology, specifically to a simulation test device and method for wave load fatigue failure of coastal rock landslide slip zone. Background Art

[0002] Coastal rock landslides refer to the phenomenon where rock masses with weak structural planes on the coast slide along these weak structural planes under the influence of waves, water pressure, and gravity. Under long-term and frequent wave impact loads, the weak structural planes of coastal rock landslides will suffer fatigue damage. Once this damage occurs, a complete landslide will take place, characterized by high sliding speed, long sliding distance, and strong destructive power, and is difficult to predict and prevent. Therefore, it is necessary to study the fatigue failure process and mechanism of coastal rock landslide slip zones under wave loads. However, currently, there is no dedicated device for conducting wave load fatigue failure simulation tests on coastal rock landslide slip zones. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems in the prior art and provide a simulation test device and test method for fatigue failure of coastal rock landslide slip zone under wave load, which facilitates the acquisition of deformation and failure process law and stress-strain parameters of landslide slip zone under continuous wave load, thereby providing theoretical and technical support for stability evaluation, prediction and prevention engineering design of coastal rock landslides.

[0004] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0005] A simulation test device for wave load fatigue failure of coastal rock landslide slip zone includes a support platform and a computer. A model box is set on the top of the support platform. A wave control system is set on the inner left side of the model box. A landslide model system and a data acquisition system are set on the inner right side of the model box. The wave control system and the data acquisition system are connected to the computer.

[0006] Based on the above technical features, wave load parameters are controlled according to the experimental design scheme and test data is collected in real time.

[0007] Preferably, the model box includes a left part box, a right part box, a jack and a small flexible waterstop, the left part box is fixed on the support platform, and the right part box is rotatably connected to the left part box through a rotating shaft;

[0008] The right-side box includes a model box side plate, a model box bottom plate, and a reaction beam. The model box bottom plate is connected to the bottom of the model box side plate, and the reaction beam is located above the model box bottom plate and is fixedly connected to the middle position of the model box side plate.

[0009] The landslide model system includes a landslide model base plate, a landslide model panel, a sliding belt, and stacked weights. The landslide model base plate is located between the reaction beam and the model box base plate.

[0010] The data acquisition system includes stress-strain sensors and slope load sensors;

[0011] The telescopic end of the jack is rotatably connected to the bottom plate of the model box, and the tail end of the jack is rotatably connected to the support platform.

[0012] Based on the above technical features, the jack is used for telescopic operation to adjust the different sliding belt angles required for the test.

[0013] Preferably, the small flexible waterstop is located at the top of the pivot connecting the left and right parts of the box, and the left end of the small flexible waterstop is fixedly connected to the left part of the box, and the right end of the small flexible waterstop is fixedly connected to the right part of the box.

[0014] Based on the above technical features, a small flexible waterstop is used to seal the joint and prevent leakage.

[0015] Preferably, the wave control system includes a CNC cylinder and a wave-making plate. The CNC cylinder is fixedly installed on the inner left side wall of the model box, and the wave-making plate is fixed on the telescopic end of the CNC cylinder.

[0016] Based on the above technical features, the computer connected to the system adjusts the different working frequencies of the CNC cylinders, causing the wave-making plate to repeatedly push the liquid in the model box to create waves of different wavelengths, heights, and frequencies, thereby simulating the effect of ocean waves hitting a rock landslide.

[0017] Preferably, the end of the landslide model base plate away from the side plate of the model box is rotatably connected to the landslide model panel via another pivot. Slope adjustment devices are provided on both the front and rear sides between the landslide model panel and the landslide model base plate. The number of stacked weights is nine sets, and the nine sets of stacked weights are arranged in a rectangular array on the landslide model base plate. The stacked weights are composed of several weights stacked from top to bottom. Weight buckles are provided on the top of the weights and the top of the landslide model base plate, and weight slots are provided on the bottom of the weights.

[0018] Based on the above technical features, it is convenient to place stacked weights at different positions on the base plate of the landslide model. The weights and the base plate of the landslide model, as well as the weights themselves, are fixed together by weight buckles and weight slots to control the weight of the landslide model.

[0019] Preferably, the side walls of the landslide model base plate and the landslide model panel that are close to each other are fixed with sliding plates, and the slope angle adjustment device includes a limiting pin and a first adjusting rod, and the two ends of the first adjusting rod are respectively connected to a second adjusting rod through a rotating positioning component;

[0020] The rotating positioning component includes a rotating shaft and a knob. The knob is threadedly connected to the rotating shaft. The rotating shaft is fixedly connected to the second adjusting rod. The two ends of the first adjusting rod are respectively movably sleeved on the corresponding rotating shaft and located between the corresponding knob and the second adjusting rod.

[0021] The end of the second adjusting rod away from the first adjusting rod is fixedly connected to a sliding seat. The sliding plate has a sliding groove that matches the sliding seat. The side wall of the sliding plate close to the slope adjustment device has a number of positioning holes that match the limiting pins. The sliding seat has pin holes that match the limiting pins.

[0022] Based on the above technical features, the slope angle adjustment device adjusts the slope angle required for the test by sliding the slider and adjusting itself.

[0023] Preferably, the sliding band includes an upper sliding panel and a lower sliding panel, and the space between the upper and lower sliding panels is filled with a sliding band filler; the upper and lower sliding panels are respectively fixedly connected to the landslide model base plate and the model box base plate by screws.

[0024] Based on the above technical features, different materials of sliding zone filling material are placed between the upper sliding panel and the lower sliding panel according to the test requirements, so as to simulate the filling material in the sliding zone of a rock landslide.

[0025] Preferably, the number of stress and strain sensors is six, of which three stress and strain sensors are fixedly installed on the reaction beam, and the other three stress and strain sensors are distributed and fixedly installed on the side plate of the model box and in contact with the rear edge of the upper sliding panel; the slope load sensor is installed on the front of the landslide model panel.

[0026] Based on the above technical features, the stress on the slope under wave action is monitored by a slope load sensor.

[0027] Preferably, large flexible waterstops are fixedly connected to both the front and rear sides of the left and right box sections, and the front and rear ends of the small flexible waterstops are respectively sealed to the corresponding large flexible waterstops; baffles are fixedly connected to both the front and rear sides of the left box section.

[0028] Based on the above technical features, the large flexible waterstop is blocked and protected at the side, which facilitates the contraction and extension of the large flexible waterstop when the right part of the box rotates.

[0029] A test method for a wave load fatigue failure simulation test device for coastal rock landslide slip zone includes the following steps:

[0030] S1. Fabrication of sliding panels: Obtain the roughness undulation morphology of the actual coastal rock landslide slip zone to be simulated using 3D laser scanning. Fabricate upper and lower sliding panels for simulation experiments using 3D carving or 3D printing methods. Based on the physical and mechanical properties of the actual coastal rock landslide slip zone material and the size ratio between the landslide model and the actual landslide, prepare slip zone filling material that meets the similarity ratio of the model test, and fill it between the upper and lower sliding panels according to the designed thickness.

[0031] S2. Install the landslide model: Fix the lower sliding panel to the bottom plate of the model box, and fix the landslide model panel and the bottom plate of the landslide model to the upper sliding panel. Adjust the jacks at the bottom of the model box and the slope adjustment device inside the landslide model to make the inclination angle of the landslide slip zone and the slope angle of the landslide consistent with the test design value. Install stacked weights on the bottom plate of the landslide model to make the self-weight of the landslide model consistent with the design value.

[0032] S3. Install stress and strain sensors: Install three stress and strain sensors on the reaction beam. The measuring points of these three stress and strain sensors are respectively connected to three evenly distributed positions on the upper surface of the landslide model bottom plate. Install another three stress and strain sensors on the right side plate of the model box. The measuring points of the other three stress and strain sensors are respectively connected to three evenly distributed positions on the side of the landslide model bottom plate. Fix the slope load sensor on the landslide model panel.

[0033] S4. Wave generation: The motion parameters of the CNC cylinder are set by computer to make the wave-generating plate move according to the designed frequency, stroke and speed to generate waves that continuously impact the landslide model panel; at the same time, the data of the slope load sensor and stress strain sensor are continuously collected in real time until the surface model slides and fails, and the test is stopped.

[0034] S5. Conduct experimental research under different working conditions: According to the experimental design requirements, set up different parameters for landslide model slip surface roughness, slip surface filling material, slip surface inclination angle, landslide slope angle, landslide self-weight and wave load, and conduct repeated tests. Based on the data collected during the test, analyze the deformation and failure process law and stress-strain parameters of the slip surface under different wave loads and different landslide model parameters.

[0035] In summary, the present invention has at least one of the following beneficial effects:

[0036] This invention provides a simulation test device and method for wave load fatigue failure of coastal rock landslide slip zone. By controlling wave parameters, landslide slope angle, landslide self-weight, slip zone angle, slip zone roughness, and slip zone filling material type, simulation tests are conducted. The relative vertical and horizontal displacement and stress of the slip zone are monitored in real time to obtain the deformation and failure process law and stress-strain parameters of the landslide slip zone under continuous wave load. This provides theoretical and technical support for the stability evaluation, prediction, and prevention engineering design of coastal rock landslides. Attached Figure Description

[0037] Figure 1 This is a side view of the test apparatus provided by the present invention;

[0038] Figure 2 This is a partially enlarged side view of the landslide model system and data acquisition system of the experimental apparatus provided by the present invention;

[0039] Figure 3 A partial top view of the landslide model system and data acquisition system of the experimental apparatus provided by the present invention;

[0040] Figure 4 This is a schematic diagram of the slope angle adjustment mechanism of the test apparatus provided by the present invention;

[0041] Figure 5 A schematic diagram of a single weight structure for the experimental apparatus provided by the present invention;

[0042] Figure 6 The present invention provides Figure 5 Top view;

[0043] Figure 7 A schematic diagram of the stacked weights for the experimental apparatus provided by the present invention;

[0044] Figure 8 Another state diagram of the model box of the experimental apparatus provided by the present invention during use;

[0045] Figure 9 The present invention provides Figure 4 A top-down partial schematic diagram.

[0046] The attached diagram lists the components represented by each number as follows:

[0047] 1-Model box side plate; 2-Model box bottom plate; 3-Jack; 4-Small flexible waterstop; 5-Rotating shaft; 6-Slide groove; 7-Positioning hole; 8-Reaction beam; 9-Slope adjustment device; 901-First adjusting rod; 902-Sliding seat; 903-Second adjusting rod; 904-Pin hole; 905-Rotating positioning part; 9051-Rotating shaft; 9052-Knob; 10-Stacked weights; 11-Weight buckle; 12-Weight 13-Landslide model base plate; 14-Landslide model panel; 15-Sliding strip filling material; 16-Lower sliding panel; 17-Upper sliding panel; 18-Stress and strain sensor; 19-Slope load sensor; 20-CNC cylinder; 21-Wave plate; 22-Sliding strip; 23-Bearing platform; 24-Model box; 25-Left part of the box; 26-Right part of the box; 27-Large flexible waterstop; 28-Barrier frame. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1-9 The present invention will be described in further detail below.

[0049] Example 1, see Appendix Figure 1 and Figure 8 An embodiment of the present invention provides a simulation test device for wave load fatigue failure of coastal rock landslide slip zone, including a support platform 23 and a computer. A model box 24 is set on the top of the support platform 23. A wave control system is set on the inner left side of the model box 24, and a landslide model system and a data acquisition system are set on the inner right side of the model box 24. The wave control system and the data acquisition system are connected to the computer.

[0050] See appendix Figure 1 , Figure 2 and Figure 8 The model box 24 includes a left box 25, a right box 26, a jack 3, and a small flexible waterstop 4. The model box 24 is not topped. The left box 25 is fixed on the support platform 23, and the right box 26 is rotatably connected to the left box 25 through a rotating shaft 5.

[0051] The right part of the box 26 includes a model box side plate 1, a model box bottom plate 2 and a reaction beam 8. The model box bottom plate 2 is connected to the bottom of the model box side plate 1, and the reaction beam 8 is located above the model box bottom plate 2 and is fixedly connected to the middle position of the model box side plate 1.

[0052] Large flexible waterstops 27 are fixedly connected to both the front and rear sides of the left box 25 and the right box 26. The front and rear ends of the small flexible waterstops 4 are respectively sealed to the corresponding large flexible waterstops 27. Baffles 28 are fixedly connected to both the front and rear sides of the left box 25 to block and protect the large flexible waterstops 27 from the side, so as to facilitate the contraction and extension of the large flexible waterstops 27 when the right box 26 rotates.

[0053] The telescopic end of jack 3 is rotatably connected to the bottom plate 2 of the model box, and the tail end of jack 3 is rotatably connected to the support 23. The inclination angle of the sliding surface can be adjusted by computer control to apply a set telescopic amount to jack 3 acting on the bottom plate 2 of the model box to adjust the different sliding belt angles required for the test.

[0054] The small flexible waterstop 4 is located on the top of the rotating shaft 5 connecting the left part box 25 and the right part box 26. The left end of the small flexible waterstop 4 is fixed to the left part box 25, and the right end of the small flexible waterstop 4 is fixed to the right part box 26. The small flexible waterstop 4 is sealed on the upper part of the rotating shaft 5 to prevent water leakage.

[0055] See appendix Figure 1 The wave control system includes a CNC cylinder 20 and a wave-making plate 21. The CNC cylinder 20 is fixedly installed on the inner left side wall of the model box, and the wave-making plate 21 is fixed on the telescopic end of the CNC cylinder 20. The wave control system uses a computer to control the CNC cylinder 20 to apply a set forward and backward pushing amplitude and frequency to the wave-making plate 21, so that the wave-making plate 21 repeatedly pushes the liquid in the model box to create waves of different wavelengths, wave heights and frequencies to simulate the effect of ocean waves hitting rocky shores.

[0056] See appendix Figure 1 , Figure 2 and Figure 3 The landslide model system includes a landslide model base plate 13, a landslide model panel 14, a sliding belt, and stacked weights 10. The landslide model base plate 13 is located between the reaction beam 8 and the model box base plate 2.

[0057] The end of the landslide model base plate 13 away from the model box side plate 1 is rotatably connected to the landslide model panel 14 via another rotating shaft 5. Slope angle adjustment devices 9 are provided on both the front and rear sides between the landslide model panel 14 and the landslide model base plate 13.

[0058] See appendix Figure 4 and Figure 9 The landslide model base plate 13 and the landslide model panel 14 are both fixed with sliding strips 22 on their side walls that are close to each other. The slope angle adjustment device 9 includes a limit pin and a first adjustment rod 901. The two ends of the first adjustment rod 901 are respectively connected to a second adjustment rod 903 through a rotating positioning piece 905.

[0059] The rotating positioning component 905 includes a rotating shaft 9051 and a knob 9052. The knob 9052 is threaded onto the rotating shaft 9051. The rotating shaft 9051 is fixedly connected to the second adjusting rod 903. The two ends of the first adjusting rod 901 are respectively movably sleeved on the corresponding rotating shaft 9051 and located between the corresponding knob 9052 and the second adjusting rod 903. Turning the knob 9052 away from the middle position of the rotating shaft 905 loosens the first adjusting rod 901, making it easier for the first adjusting rod 901 to rotate on the rotating shaft 9051, thereby facilitating the adjustment of the angle between the first adjusting rod 901 and the second adjusting rod 903. After the angle is determined, the knob 9052 is turned in the opposite direction to bring it closer to the middle position of the rotating shaft 905, pressing the end of the first adjusting rod 901 so that it is tightly pressed against the second adjusting rod 903, thereby limiting and fixing the adjusted first adjusting rod 901 and the second adjusting rod 903.

[0060] The end of the second adjusting rod 903 away from the first adjusting rod 901 is fixedly connected to a sliding seat 902. The slide plate 22 has a sliding groove 6 that mates with the sliding seat 902. The side wall of the slide plate 22 close to the slope angle adjusting device 9 has several positioning holes 7 that mate with the limiting pins. The sliding seat 902 has a pin hole 904 that mates with the limiting pin. When the sliding seat 902 slides to the position where the pin hole 904 is coaxial with a positioning hole 7 in a suitable position, the limiting pin is inserted into the positioning hole 7 and the pin hole 904 to position the sliding seat 902 after sliding on the slide plate 22. Rotating the knob 905 counterclockwise will release the first adjusting rod 901 to its current position, and rotating it clockwise will tighten it to fix it, so as to adjust the different slope angles required for the test.

[0061] See appendix Figure 3 , Figure 5 , Figure 6 and Figure 7 Nine sets of stacked weights 10 are arranged in a rectangular array on the landslide model base plate 13. Each stacked weight 10 is composed of several weights stacked from top to bottom. Weight buckles 11 are provided on the top of the weights and the top of the landslide model base plate 13. Weight slots 12 are provided on the bottom of the weights to facilitate the placement of stacked weights of different weights at different positions on the landslide model base plate 13 according to the test requirements. The weights and the landslide model base plate 13 are connected and fixed to each other by the weight buckles 11 and the weight slots 12 to control the weight of the landslide model.

[0062] The sliding strip includes an upper sliding panel 17 and a lower sliding panel 16. The space between the upper sliding panel 17 and the lower sliding panel 16 is filled with sliding strip filler 15. Different materials of filler are placed in the sliding strip inside the upper and lower sliding panels according to the test requirements to simulate the filler in the sliding strip of the rock bank slope. The upper sliding panel 17 and the lower sliding panel 16 are fixedly connected to the landslide model base plate 13 and the model box base plate 2 by screws, respectively.

[0063] The data acquisition system includes stress-strain sensors 18 and slope load sensors 19. There are six stress-strain sensors 18, three of which are fixedly installed on the reaction beam 8 to measure the stress and strain of the landslide model base plate 13, so as to monitor the displacement and stress of the landslide model base plate 13 in its vertical direction. The other three stress-strain sensors 18 are distributed and fixedly installed on the side plate 1 of the model box and in contact with the rear edge of the upper sliding panel 17, so as to monitor the displacement and stress of the sliding panel in its parallel direction. The slope load sensors 19 are installed on the front of the landslide model panel 14 to monitor the stress of the slope under wave action.

[0064] Example 2, see Appendix Figure 1-9 Based on the same concept as Embodiment 1 above, another embodiment of the present invention provides: a test method for a simulation test device for wave load fatigue failure of coastal rock landslide slip zone, comprising the following steps:

[0065] S1. Fabrication of sliding panels: The roughness undulation of the actual coastal rock landslide slip zone to be simulated is obtained by three-dimensional laser scanning. The upper sliding panel 17 and the lower sliding panel 16 for simulation test are fabricated by 3D carving or 3D printing. According to the physical and mechanical properties of the actual coastal rock landslide slip zone material and the size ratio between the landslide model and the actual landslide, the slip zone filling material that meets the similarity ratio of the model test is prepared and filled between the upper and lower sliding panels according to the designed thickness.

[0066] S2. Install the landslide model: Fix the lower sliding panel 16 onto the base plate 2 of the model box, and fix the landslide model panel 14 and the landslide model base plate 13 onto the upper sliding panel 17. Adjust the jack 3 at the bottom of the model box base plate 2 and the slope angle adjustment device 9 inside the landslide model to make the inclination angle of the landslide slip zone and the slope angle of the landslide consistent with the experimental design value. Install stacked weights 10 on the landslide model base plate 13 to make the self-weight of the landslide model consistent with the design value.

[0067] S3. Install stress and strain sensors: Install three stress and strain sensors 18 on the reaction beam 8. The measuring points of these three stress and strain sensors 18 are respectively connected to three evenly distributed positions on the upper surface of the landslide model base plate 13. Install another three stress and strain sensors 18 on the right side panel 1 of the model box. The measuring points of the other three stress and strain sensors 18 are respectively connected to three evenly distributed positions on the side of the landslide model base plate 13. Fix the slope load sensor on the landslide model panel 14.

[0068] S4. Wave generation: The motion parameters of the CNC cylinder 20 are set by computer to make the wave-generating plate 21 move according to the designed frequency, stroke and speed to generate waves that continuously impact the landslide model panel 14; at the same time, the data of the slope load sensor 19 and stress strain sensor 18 are continuously collected in real time until the surface model slides and fails, and the test is stopped.

[0069] S5. Conduct experimental research under different working conditions: According to the experimental design requirements, set up different landslide model parameters such as slip zone roughness undulation, slip zone filling material, slip zone inclination angle, landslide slope angle, landslide self-weight and wave load parameters to carry out repeated tests. Based on the data collected during the test, analyze the deformation and failure process law and stress-strain parameters of the slip zone under different wave loads and different landslide model parameters, so as to provide theoretical and technical support for the stability evaluation, prediction and prevention engineering design of coastal rock landslides.

[0070] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A simulation test device for wave load fatigue failure of coastal rock landslide slip zone, comprising a support platform (23) and a computer, characterized in that: A model box (24) is provided on the top of the support platform (23). A wave control system is provided on the inner left side of the model box (24), and a landslide model system and a data acquisition system are provided on the inner right side of the model box (24). The wave control system and the data acquisition system are connected to a computer.

2. The simulation test device for wave load fatigue failure of coastal rock landslide slip zone according to claim 1, characterized in that: The model box (24) includes a left part box (25), a right part box (26), a jack (3) and a small flexible waterstop (4). The left part box (25) is fixed on the support platform (23), and the right part box (26) is rotatably connected to the left part box (25) through a rotating shaft (5). The right part of the box (26) includes a model box side plate (1), a model box bottom plate (2) and a reaction beam (8). The model box bottom plate (2) is connected to the bottom of the model box side plate (1), and the reaction beam (8) is located above the model box bottom plate (2) and is fixedly connected to the middle position of the model box side plate (1). The landslide model system includes a landslide model base plate (13), a landslide model panel (14), a sliding belt, and stacked weights (10). The landslide model base plate (13) is located between the reaction beam (8) and the model box base plate (2). The data acquisition system includes a stress-strain sensor (18) and a slope load sensor (19); The telescopic end of the jack (3) is rotatably connected to the bottom plate (2) of the model box, and the tail end of the jack (3) is rotatably connected to the support platform (23).

3. The experimental device for simulating wave load fatigue failure of coastal rock landslide slip zone according to claim 2, characterized in that: The small flexible waterstop (4) is located on the top of the pivot (5) connecting the left part box (25) and the right part box (26), and the left end of the small flexible waterstop (4) is fixed to the left part box (25), and the right end of the small flexible waterstop (4) is fixed to the right part box (26).

4. The wave load fatigue failure simulation test device for coastal rock landslide slip zone according to claim 1, characterized in that: The wave control system includes a CNC cylinder (20) and a wave-making plate (21). The CNC cylinder (20) is fixedly installed on the inner left side wall of the model box (24), and the wave-making plate (21) is fixed on the telescopic end of the CNC cylinder (20).

5. The wave load fatigue failure simulation test device for coastal rock landslide slip zone as described in claim 2, characterized in that: The end of the landslide model base plate (13) away from the side plate (1) of the model box is rotatably connected to the landslide model panel (14) through another pivot (5). The landslide model panel (14) and the landslide model base plate (13) are provided with slope angle adjustment devices (9) on both the front and rear sides. The number of stacked weights (10) is nine sets. The nine sets of stacked weights (10) are arranged in a rectangular array on the landslide model base plate (13). The stacked weights (10) are composed of several weights stacked from top to bottom. The top of the weights and the top of the landslide model base plate (13) are provided with weight buckles (11), and the bottom of the weights is provided with weight slots (12).

6. The wave load fatigue failure simulation test device for coastal rock landslide slip zone as described in claim 5, characterized in that: The landslide model base plate (13) and the landslide model panel (14) are both fixed with sliding strips (22) on their side walls that are close to each other. The slope angle adjustment device (9) includes a limiting pin and a first adjusting rod (901). The two ends of the first adjusting rod (901) are respectively connected to a second adjusting rod (903) through a rotating positioning piece (905). The rotating positioning component (905) includes a rotating shaft (9051) and a knob (9052). The knob (9052) is threaded onto the rotating shaft (9051). The rotating shaft (9051) is fixedly connected to the second adjusting rod (903). The two ends of the first adjusting rod (901) are respectively movably sleeved on the corresponding rotating shaft (9051) and located between the corresponding knob (9052) and the second adjusting rod (903). The end of the second adjusting rod (903) away from the first adjusting rod (901) is fixedly connected to a sliding seat (902). The slide plate (22) is provided with a sliding groove (6) that cooperates with the sliding seat (902). The side wall of the slide plate (22) close to the slope adjustment device (9) is evenly provided with a number of positioning holes (7) that cooperate with the limiting pin. The sliding seat (902) is provided with a pin hole (904) that cooperates with the limiting pin.

7. The wave load fatigue failure simulation test device for coastal rock landslide slip zone as described in claim 2, characterized in that: The sliding band includes an upper sliding panel (17) and a lower sliding panel (16), and the space between the upper sliding panel (17) and the lower sliding panel (16) is filled with a sliding band filler (15); the upper sliding panel (17) and the lower sliding panel (16) are respectively fixedly connected to the landslide model base plate (13) and the model box base plate (2) by screws.

8. The wave load fatigue failure simulation test device for coastal rock landslide slip zone as described in claim 2, characterized in that: The number of stress and strain sensors (18) is six, of which three stress and strain sensors (18) are fixedly installed on the reaction beam (8), and the other three stress and strain sensors (18) are distributed and fixedly installed on the side plate (1) of the model box and in contact with the rear edge of the upper sliding panel (17); the slope load sensor (19) is installed on the front of the landslide model panel (14).

9. The wave load fatigue failure simulation test device for coastal rock landslide slip zone as described in claim 2, characterized in that: Large flexible waterstops (27) are fixedly connected to both the front and rear sides of the left part box (25) and the right part box (26), and the front and rear ends of the small flexible waterstops (4) are respectively sealed to the corresponding large flexible waterstops (27); baffles (28) are fixedly connected to both the front and rear sides of the left part box (25).

10. The test method for a wave load fatigue failure simulation test device for coastal rock landslide slip zone according to any one of claims 1 to 9, characterized in that: Includes the following steps: S1. Fabrication of sliding panels: The roughness undulation of the actual coastal rock landslide slip zone to be simulated is obtained by three-dimensional laser scanning. The upper sliding panel (17) and lower sliding panel (16) for simulation test are fabricated by 3D carving or 3D printing. According to the physical and mechanical properties of the actual coastal rock landslide slip zone material and the size ratio between the landslide model and the actual landslide, the slip zone filling material that meets the similarity ratio of the model test is prepared and filled between the upper and lower sliding panels according to the designed thickness. S2. Install the landslide model: Fix the lower sliding panel (16) on the bottom plate (2) of the model box, and fix the landslide model panel (14) and the bottom plate (13) of the landslide model on the upper sliding panel (17). Adjust the jack (3) at the bottom of the bottom plate (2) of the model box and the slope angle adjustment device (9) inside the landslide model to make the inclination angle of the landslide slip zone and the slope angle of the landslide consistent with the test design value. Install stacked weights (10) on the bottom plate (13) of the landslide model to make the self-weight of the landslide model consistent with the design value. S3. Install stress and strain sensors: Install three stress and strain sensors (18) on the reaction beam (8). The measuring points of these three stress and strain sensors (18) are respectively connected to three evenly distributed positions on the upper surface of the landslide model base plate (13). Install another three stress and strain sensors (18) on the right side panel (1) of the model box. The measuring points of the other three stress and strain sensors (18) are respectively connected to three evenly distributed positions on the side of the landslide model base plate (13). Fix the slope load sensor on the landslide model panel (14). S4. Wave generation: The motion parameters of the CNC cylinder (20) are set by computer to make the wave-generating plate (21) move according to the designed frequency, stroke and speed to generate waves of the designed parameters and continuously impact the landslide model panel (14); at the same time, the data of the slope load sensor (19) and stress strain sensor (18) are continuously collected in real time until the surface model slides and is damaged, and the test is stopped. S5. Conduct experimental research under different working conditions: According to the experimental design requirements, set up different parameters for landslide model slip surface roughness, slip surface filling material, slip surface inclination angle, landslide slope angle, landslide self-weight and wave load, and conduct repeated tests. Based on the data collected during the test, analyze the deformation and failure process law and stress-strain parameters of the slip surface under different wave loads and different landslide model parameters.

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