Seabed landslide simulation experiment device and method

Abstract

The invention discloses a seabed landslide simulation experiment device and method, and relates to the technical field of marine geological disaster simulation, the seabed landslide simulation experiment device comprises a closed test box, and at least one side of the test box is provided with a visual structure; the seabed simulation assembly is arranged at the bottom of the test box, the seabed simulation assembly comprises a bearing part, the gradient of the bearing part is adjustable, and a sediment layer, a trap layer and a storage layer which are sequentially arranged on the bearing part form a landslide mass; a seabed water pressure simulation assembly; a water flow simulation assembly; a pore water pressure simulation assembly; the measuring assembly comprises a camera module and a sensor module, the camera module obtains image information of the seabed simulation assembly through the visual structure, and the sensor module is used for obtaining the pressure condition in the test box and the pressure condition of the landslide mass. According to the seabed landslide simulation experiment device, a complex seabed environment can be truly simulated, so that the prediction accuracy of an experiment result on an actual seabed landslide condition is improved.

Description

Technical Field

[0001] The present application relates to the technical field of marine geological disaster simulation, and in particular to a submarine landslide simulation experimental device and method. Background Art

[0002] Submarine landslides are a serious marine geological disaster that poses a huge threat to marine engineering facilities, submarine cables, etc. At present, the research on submarine landslides mainly focuses on theoretical analysis and field observations, but these methods have certain limitations due to the complexity and inaccessibility of the submarine environment. In addition, traditional research on submarine landslides mostly focuses on a single factor, such as only considering the decomposition of natural gas hydrates or only considering wave changes. However, in the actual marine environment, submarine landslides are often induced by the interaction of multiple factors, including but not limited to the coupling of complex geological structures, changing seawater dynamic conditions, and natural gas hydrate decomposition. This complexity makes it extremely difficult to accurately understand and predict the occurrence mechanism of submarine landslides.

[0003] In the actual submarine landslide process, geological parameters may change with time and environmental changes, such as the degree of consolidation of submarine sediments, changes in pore water pressure, etc. However, the existing technology cannot be dynamically adjusted during the simulation process, resulting in the simulation results not being able to well reflect the dynamic changes of submarine landslides. The occurrence of submarine landslides is affected by the combined effects of multiple factors, such as submarine water erosion, seafloor inclination, sediment properties, natural gas hydrate decomposition, seafloor depth changes, etc. The interactions between these factors are very complex, and the existing simulation devices cannot well reflect the actual submarine landslide process. Summary of the invention

[0004] The present application aims to solve one of the above technical problems in the prior art. To this end, the present application provides a submarine landslide simulation experimental device.

[0005] The embodiment of the present application also provides a method for simulating submarine landslides.

[0006] According to an embodiment of the first aspect of the present application, there is provided a submarine landslide simulation experimental device, comprising a closed test box, at least one side of which is provided with a visualization structure; a submarine simulation component, which is arranged at the bottom of the test box, and the submarine simulation component comprises a bearing member, the inclination of which is adjustable, and the sediment layer, the closure layer, and the storage layer sequentially arranged on the bearing member form a landslide body; a submarine water pressure simulation component, which is used to adjust the pressure in the test box; a water flow simulation component, which is used to adjust the flow direction and speed of the liquid in the test box; a pore water pressure simulation component, which is used to inject gas or water into the storage layer; a measuring component, which comprises a camera module and a sensor module, the camera module obtains image information of the submarine simulation component through the visualization structure, and the sensor module is used to obtain the pressure conditions in the test box and the pressure conditions of the landslide body.

[0007] The above submarine landslide simulation experimental device has at least the following beneficial effects: adjusting the inclination of the bearing member according to the required simulation experiment so as to simulate landslide bodies with different slopes, adjusting the water pressure in the test box to the required preset value through the submarine water pressure simulation component, using the water flow simulation component to adjust the liquid flow direction and speed in the test box, and adding gas or water to the storage layer of the landslide body in cooperation with the pore water pressure simulation component, adjusting multiple groups of data to measure the landslide body in different environments, and then using the measurement component to record the landslide data. The submarine landslide simulation experimental device of the present application can truly simulate a complex submarine environment and reproduce scenes where multiple factors work together, such as the coupling of seawater pressure, submarine water flow erosion, submarine inclination, formation characteristics, and unstable decomposition of natural gas hydrates, thereby improving the accuracy of the experimental results for predicting actual submarine landslide conditions. It helps to conduct in-depth research on the relationship between different factors and provide detailed data for analyzing the mechanism of submarine landslides.

[0008] According to the submarine landslide simulation experimental device described in the embodiment of the first aspect of the present application, the measuring component also includes a measuring piece, the landslide body is arranged on one side of the bottom of the test box, and the measuring piece is arranged on the other side of the bottom of the test box, the measuring piece is docked with the bearing piece, and the measuring piece is used to measure the landslide area when the landslide body slides.

[0009] According to the submarine landslide simulation experimental device described in the embodiment of the first aspect of the present application, a plurality of grid lines are arranged on the measuring member, and the plurality of grid lines are crisscrossed to form a measuring unit for measurement.

[0010] According to the submarine landslide simulation experimental device described in the embodiment of the first aspect of the present application, the water flow simulation component includes a driving member and a rotating paddle, the rotating paddle is arranged on the side wall of the test box, and the driving member is used to drive the rotating paddle to rotate.

[0011] According to the submarine landslide simulation experimental device described in the first aspect of the embodiment of the present application, the submarine water pressure simulation component includes a first pressurizer and a second pressurizer, the first pressurizer is used to add gas to the test box, and the second pressurizer is used to add liquid to the test box.

[0012] According to the submarine landslide simulation experimental device described in the first aspect of the embodiment of the present application, the pore water pressure simulation component includes a third pressurizer and a fourth pressurizer, the third pressurizer is used to inject liquid into the storage layer, and the fourth pressurizer is used to inject gas into the storage layer.

[0013] According to the submarine landslide simulation experimental device described in the embodiment of the first aspect of the present application, the third pressurizer and the fourth pressurizer are both provided with a plurality of delivery pipes, and the output ports of all the delivery pipes are arrayed and distributed in the storage layer.

[0014] According to the submarine landslide simulation experimental device described in the embodiment of the first aspect of the present application, the submarine simulation component also includes an adjustment plate and a jack, one end of the support member is rotatably connected to the bottom of the test box, and the other end of the support member is rotatably connected to the adjustment plate, and the jack is used to lift the adjustment plate so that the adjustment plate can adjust the inclination of the support member.

[0015] According to the submarine landslide simulation experimental device described in the embodiment of the first aspect of the present application, the side of the test box is made of glass to form the visualization structure.

[0016] According to an embodiment of the second aspect of the present application, a submarine landslide simulation method is provided, comprising the following steps:

[0017] The bearing member is adjusted to a preset inclination, and a landslide body consisting of a sediment layer, a trap layer, a storage layer, a trap layer and a sediment layer is sequentially arranged on the bearing member, wherein a sensor module is arranged in the landslide body;

[0018] The landslide body is left to stand for 12 hours;

[0019] After the test box is filled with water through the seabed water pressure simulation component, gas is added to make the pressure in the test box reach the required preset value;

[0020] Turning on the camera module and the sensor module, and adjusting the water flow velocity in the test box through the water flow simulation component to simulate the flow environment of the seabed;

[0021] Starting a pore water pressure simulation component to inject natural gas and water into the storage layer at the same time, and stopping the pore water pressure simulation component when the landslide body produces a landslide;

[0022] The sensor module and the camera module are used to record the pressure of the test box during landslide and the landslide range of the landslide body.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present application is further described below in conjunction with the accompanying drawings and embodiments;

[0025] Figure 1 is a three-dimensional schematic diagram of a submarine landslide simulation experimental device according to an embodiment of the present application;

[0026] Figure 2 is a top view of a submarine landslide simulation experimental device according to an embodiment of the present application;

[0027] Figure 3 The structure of the submarine landslide simulation experimental device of the embodiment of the present application is shown in FIG. Figure 1 ;

[0028] Figure 4 The structure of the submarine landslide simulation experimental device of the embodiment of the present application is shown in FIG. Figure 2 .

[0029] Figure numerals: 1- partition, 2- top cover, 3- bottom cover, 4- auxiliary plate, 5- tripod, 6- jack top plate, 7- slope bottom plate, 8- adjustment plate, 9- hydraulic jack, 10- high-definition camera, 11- sediment layer, 14- water injection pipe, 15- wire, 17- first water tank, 18- first water pump, 19- pressure gauge, 20- first air compressor, 21- main control computer, 22- flow driving motor, 23- flow rotating paddle, 24- fixing device, 26- second air compressor, 27- flow meter, 28- air injection pipe, 30- closed layer, 31- sensor device, 32- measuring device, 34- second water tank, 35- water injection pipe, 37- second water pump, 38- storage layer, 39- transparent organic glass, 40- landslide body, 41- red grid. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0034] Reference Figures 1 to 3 An embodiment of the present application provides a submarine landslide simulation experimental device, which includes a test box, a submarine simulation component, a submarine water pressure simulation component, a water flow simulation component, a pore water pressure simulation component and a measurement component.

[0035] The top of the test box can be opened to facilitate the arrangement of other components in the test box. In normal use, the test box is in a closed state. At least one side of the test box is provided with a visualization structure, through which the situation in the test box can be observed.

[0036] The seabed simulation component is arranged at the bottom of the test box, and includes a bearing member, the inclination of which is adjustable, and the sediment layer 11, the trap layer 30, and the storage layer 38 arranged on the bearing member from the inside to the outside form a landslide body 40. According to different seabed depths, the remodeling ratio of the landslide body 40 is changed to study the submarine landslide process under different sediment characteristics.

[0037] The trap layer 30 is mainly composed of clay, mudstone and shale with poor water permeability and air permeability, the sediment layer 11 is mainly composed of sand, clay and silt, and the reservoir layer 38 is composed of volcanic ash, pore water, clay and silt.

[0038] The seabed simulation component is arranged at the bottom of the test box, and includes a bearing member, the inclination of which is adjustable, and the sediment layer 11, the trap layer 30, the storage layer 38, the trap layer 30 and the sediment layer 11 arranged in sequence on the bearing member form a landslide body 40. The compaction degree of the landslide body 40 is adjusted according to different seabed depths.

[0039] The seabed water pressure simulation component is used to adjust the pressure in the test box. Specifically, the test box is filled with water through the seabed water pressure simulation component, and the seabed water pressure is simulated by injecting air after the test box is filled with water.

[0040] The water flow simulation component is used to adjust the flow direction and speed of the liquid in the test box, and is used to generate water flows with different flow rates and directions in the test box to simulate the real environment of the seabed water flow.

[0041] The pore water pressure simulation component is used to inject gas or water into the reservoir 38 to simulate the water and gas produced by the decomposition of natural gas hydrates in the actual seabed situation.

[0042] The measuring component includes a camera module and a sensor module. The camera module obtains image information of the seabed simulation component through a visualization structure, and the sensor module is used to obtain the pressure conditions in the test box and the pressure conditions of the landslide body 40.

[0043] When in use, the inclination of the bearing member is adjusted according to the required simulation experiment so that a landslide body 40 with different slopes can be simulated. The water pressure in the test box is adjusted to the required preset value through the seabed water pressure simulation component. The flow simulation component is used to adjust the flow direction and speed of the liquid in the test box. The pore water pressure simulation component is used to inject gas or water into the storage layer 38 of the landslide body 40. Through the adjustment of multiple sets of data, the landslide situation of the landslide body 40 in different environments is simulated, and the landslide data is recorded using the measurement component.

[0044] The submarine landslide simulation experimental device of the present application can realistically simulate the complex submarine environment and accurately reproduce the scene of the combined action of multiple factors, such as the coupling of seawater pressure, submarine water flow erosion, submarine inclination, formation characteristics, and unstable decomposition of natural gas hydrates, thereby improving the accuracy of the experimental results for predicting actual submarine landslide conditions. It helps to conduct in-depth research on the relationship between different factors, provide detailed data for analyzing the mechanism of submarine landslides, and fill the gaps in the existing single factor or simple combination of factor simulation experimental devices in simulating multiple complex factors.

[0045] In some embodiments, the sides of the test box are made of glass, thereby forming a visualization structure, which facilitates the filming and observation of related processes through the visualization structure.

[0046] The measuring assembly also includes a measuring piece 32. The landslide body 40 is arranged at one side of the bottom of the test box. The measuring piece 32 is arranged at the other side of the bottom of the test box. The measuring piece 32 is connected to the bearing member. The measuring piece 32 is used to measure the landslide area when the landslide body 40 slides. Among them, the measuring piece 32 is provided with a plurality of grid lines, and the plurality of grid lines are arranged in a crisscross manner to form a measuring unit for measurement. The coverage area and displacement of the landslide can be quickly read out through the measuring unit.

[0047] In some embodiments, the camera module includes a high-definition camera 10, the sensor module includes a plurality of sensor devices 31, the sensor devices 31 include pressure sensors, displacement sensors, acceleration sensors, pore pressure sensors and stress strain sensors, and the sensor devices 31 are used to monitor in real time the pressure, displacement and morphological changes of seabed sediments and the process of submarine landslides during the test.

[0048] Among them, a pressure sensor for monitoring the hydrostatic pressure of the test box is arranged on the top of the test box. And an acceleration sensor is also arranged on the top of the test box for monitoring the dynamic process of the submarine landslide. The measuring part 32 is provided with a displacement sensor, a pore pressure sensor, and a stress-strain sensor for collecting the stress-strain changes and pore pressure changes during the submarine landslide process. The sediment layer 11 is provided with multiple groups of pore pressure sensors and stress-strain sensors for monitoring the pore pressure changes and stress-strain changes before the landslide begins. The high-definition camera 10 is facing the visualization structure, and the high-definition camera 10 is used to shoot and record the entire dynamic process of the submarine landslide.

[0049] In some embodiments provided in this application, Figures 1 to 4 As shown, the two opposite sides of the test box are made of high-strength transparent organic glass 39, and the transparent organic glass 39 is engraved with a 10cm×10cm red grid to study the sliding distance of the landslide. The top cover 2, the bottom cover 3 and the partitions 1 on the other two sides of the test box are all made of high-strength anti-corrosion materials, and the tripod 5 of the test box is made of ordinary stainless steel.

[0050] Furthermore, the left side of the bottom of the test box is a landslide body 40 simulation area, and the seabed simulation component also includes an adjustment plate 8 and a jack. One end of the bearing member is rotatably connected to the bottom of the test box, and the other end of the bearing member is rotatably connected to the adjustment plate 8. The jack is used to lift the adjustment plate 8 so that the adjustment plate 8 can adjust the inclination of the bearing member.

[0051] The jacking device is a jack, and the bearing member includes a jack top plate 6 . The jack top plate 6 is lifted by four hydraulic jacks 9 so as to change the inclination angle of the entire landslide body 40 .

[0052] The right side of the bottom of the test box is the landslide observation area and data recording area, and the measuring piece 32 is set on this side, and the stress strain sensor and pore pressure sensor are evenly distributed on the measuring piece 32 to record the stress strain change and pore pressure change process during the landslide process. And a 10cm×10cm red grid 41 is engraved on the measuring piece 32 to study the impact range and landslide area of ​​the landslide. In some embodiments, a card slot is set in the middle of the test box, and the card slot is used for the installation of the auxiliary plate 4, and the auxiliary plate 4 is used to fix the sample (that is, to assist in forming the landslide body 40).

[0053] In some embodiments, the water flow simulation component includes a driving member and a rotating paddle, the rotating paddle is disposed on a side wall of the test box, and the driving member is used to drive the rotating paddle to rotate.

[0054] In a specific embodiment, the driving member is a flow-making driving motor 22, the rotating paddle is a flow-making rotating propeller 23, and the water flow simulation component also includes a fixing device 24 and a main control computer 21. The main control computer 21 controls the flow-making driving motor 22 to drive the rotating flow-making rotating propeller 23 to generate water flow, which is used to generate water flow with different flow rates and directions in the test box to simulate the real environment of the seabed water flow.

[0055] The submarine water pressure simulation assembly includes a first pressurizer and a second pressurizer, wherein the first pressurizer is used to inject gas into the test box, and the second pressurizer is used to inject liquid into the test box. Specifically, the first pressurizer is a first air compressor 20, and the second pressurizer is a first water pump 18.

[0056] like Figures 1 to 4 The submarine water pressure simulation component also includes a pipeline 14, a main control computer 21, a pressure gauge 19, a pressure relief valve and a first water tank 17. The water in the first water tank 17 is pumped into the test box by a first water pump 18 until it is full. Then, the main control computer 21 sets a corresponding program so that the first air compressor 20 starts working to raise the pressure in the test box to the designed water pressure.

[0057] In some embodiments, the seabed simulation assembly further includes a slope bottom plate 7 , through which the landslide body 40 and the measuring member 32 are effectively connected.

[0058] In some embodiments, the trap layer 30 is mainly composed of clay with poor water permeability and air permeability, the sediment layer 11 is mainly composed of sand, clay, and silt, and the storage layer 38 is composed of volcanic ash, pore water, clay, and silt. Layered sampling and compaction are performed through the auxiliary plate 4, and the topography of the landslide body 40 is obtained through drilling data and shallow stratum profile detection technology, and the submarine landslide process under different sediment characteristics can also be studied by changing the remodeling ratio of the sample.

[0059] In some embodiments, the pore water pressure simulation assembly includes a third pressurizer and a fourth pressurizer, the third pressurizer is used to inject liquid into the storage layer 38, and the fourth pressurizer is used to inject gas into the storage layer 38. The third pressurizer and the fourth pressurizer are both provided with a plurality of delivery pipes, and the output ports of all the delivery pipes are arrayed in the storage layer 38. The delivery pipes include a gas injection pipe 28 and a water injection pipe 35.

[0060] Among them, the third pressurizer is the second water pump 37, the fourth pressurizer is the second air compressor 26, and the pore water pressure simulation component also includes a flow meter 27 and a pressure relief valve. The water in the second water tank 34 is injected into the storage layer 38 through the second water pump 37, and the water injection flow rate and the gas injection flow rate are controlled by the main control computer 21.

[0061] The present application also provides a submarine landslide simulation method based on the above submarine landslide simulation experimental device, comprising the following steps:

[0062] The bearing member is adjusted to a preset inclination, and a landslide body 40 consisting of a sediment layer 11, a trap layer 30, a storage layer 38, a trap layer 30 and a sediment layer 11 is sequentially arranged on the bearing member, wherein a sensor module is provided in the landslide body 40.

[0063] Specifically, the slope angle of the seabed slope is adjusted by the hydraulic jack 9, the slope bottom plate 7 and the adjustment plate 8 are fixed, and the auxiliary plate 4 is lowered and fixed; the landslide body 40 is added in layers and compacted, and the pore pressure sensor and the stress strain sensor are placed and fixed during the layered sampling process; after the sampling is completed, the landslide body 40 is left to stand for 12 hours, and the auxiliary plate 4 is taken out after the maintenance is completed.

[0064] After the test box is filled with water through the seabed water pressure simulation component, gas is added to make the pressure in the test box reach the required preset value. Specifically, the first water pump 18 in the first water tank 17 pumps water to fill the test box until it is full, and then the main control computer 21 adds a program to use the first air compressor 20 to pressurize the water pressure in the test box to the design water pressure.

[0065] The camera module and the sensor module are turned on, and the water flow velocity in the test box is adjusted through the water flow simulation component to simulate the flow environment of the seabed.

[0066] Start the pore water pressure simulation component, inject natural gas and water into the storage layer 38 at the same time, and stop the pore water pressure simulation component when the landslide body 40 produces landslide;

[0067] Specifically, the main control computer 21 is programmed to allow the second air compressor 26 to inject gas into the storage layer 38 in the landslide body 40 through the gas injection pipe 28 at a certain loading rate, and the main control computer 21 controls the second water pump 37 to inject water into the storage layer 38 in the landslide body 40 at a certain loading rate. When the pore pressure in the storage layer 38 reaches the limit value, the slope of the landslide body 40 begins to slide, and the high-definition camera 10 is responsible for recording the submarine landslide process, and the pore pressure sensor, stress strain sensor, acceleration sensor and displacement sensor record the change process of the pore pressure and stress strain of the landslide body 40 and the dynamic process of the submarine landslide.

[0068] The sensor module and the camera module are used to record the pressure of the test box during the landslide and the landslide range of the landslide body 40. The video files of the high-definition camera 10 are saved to the main control computer 21, and the data stored by each sensor device during the landslide is saved to the main control computer 21. The sliding distance, maximum width and area of ​​the landslide are recorded through the red grid lines on the solid transparent organic glass 39.

[0069] The program of the second air compressor 26 is turned off, the high-definition camera 10 and the flow driving machine 22 are turned off, the first air compressor 20 is operated by the main control computer to adjust the water pressure in the model box to normal water pressure, and the first water pump 18 is turned on to pump water and clean the model box, and the experiment is completed.

[0070] The experimental device of the present application can realistically simulate the complex seabed environment and accurately reproduce the scene where multiple factors work together, such as the coupling of seawater pressure, seabed water erosion, seabed inclination, formation characteristics, and unstable decomposition of natural gas hydrates, thereby improving the accuracy of the experimental results for predicting actual submarine landslides. It helps to conduct in-depth research on the relationship between different factors and provide detailed data for analyzing the mechanism of submarine landslides. It can also simulate the submarine landslide process under different working conditions, provide a reliable reference basis for the construction of submarine projects and the formulation of protective measures, and effectively reduce the risk of submarine projects being damaged by landslides.

[0071] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A submarine landslide simulation experimental device, characterized in that: include A closed test box, at least one side of which is provided with a visualization structure; A seabed simulation component is arranged at the bottom of the test box, the seabed simulation component comprises a bearing member, the inclination of the bearing member is adjustable, and the sediment layer, the trap layer, and the storage layer arranged in sequence on the bearing member form a landslide body; A seabed water pressure simulation component, used to adjust the pressure in the test chamber; A water flow simulation component, used to adjust the flow direction and speed of the liquid in the test box; A pore water pressure simulation component, used for injecting gas or water into the reservoir; The measuring component includes a camera module and a sensor module. The camera module obtains image information of the seabed simulation component through the visualization structure. The sensor module is used to obtain the pressure conditions in the test box and the pressure conditions of the landslide body.

2. The submarine landslide simulation experimental device according to claim 1 is characterized in that: The measuring assembly also includes a measuring piece. The landslide body is arranged on one side of the bottom of the test box, and the measuring piece is arranged on the other side of the bottom of the test box. The measuring piece is docked with the bearing member, and the measuring piece is used to measure the landslide area when the landslide body slides.

3. The submarine landslide simulation experimental device according to claim 2 is characterized in that: A plurality of grid lines are arranged on the measuring member, and the plurality of grid lines are arranged in a crisscross manner to form a measuring unit for measurement.

4. The submarine landslide simulation experimental device according to claim 1, characterized in that: The water flow simulation component includes a driving member and a rotating paddle. The rotating paddle is arranged on the side wall of the test box, and the driving member is used to drive the rotating paddle to rotate.

5. The submarine landslide simulation experimental device according to claim 1, characterized in that: The seabed water pressure simulation component includes a first pressurizer and a second pressurizer, the first pressurizer is used to inject gas into the test box, and the second pressurizer is used to inject liquid into the test box.

6. The submarine landslide simulation experimental device according to claim 1, characterized in that: The pore water pressure simulation component includes a third pressurizer and a fourth pressurizer, the third pressurizer is used to inject liquid into the storage layer, and the fourth pressurizer is used to inject gas into the storage layer.

7. The submarine landslide simulation experimental device according to claim 6, characterized in that: The third pressurizer and the fourth pressurizer are both provided with a plurality of delivery pipes, and the output ports of all the delivery pipes are distributed in an array on the storage layer.

8. The submarine landslide simulation experimental device according to claim 1 is characterized in that: The seabed simulation component also includes an adjustment plate and a lifter. One end of the support member is rotatably connected to the bottom of the test box, and the other end of the support member is rotatably connected to the adjustment plate. The lifter is used to lift the adjustment plate so that the adjustment plate can adjust the inclination of the support member.

9. The submarine landslide simulation experimental device according to claim 1, characterized in that: The sides of the test box are made of glass to form the visualization structure.

10. A submarine landslide simulation method, based on the submarine landslide simulation experimental device described in any one of claims 1 to 9, characterized in that: The steps include: The bearing member is adjusted to a preset inclination, and a landslide body consisting of a sediment layer, a trap layer, a storage layer, a trap layer and a sediment layer is sequentially arranged on the bearing member, wherein a sensor module is arranged in the landslide body; The landslide body is left to stand for 12 hours; After the test box is filled with water through the seabed water pressure simulation component, gas is added to make the pressure in the test box reach the required preset value; Turning on the camera module and the sensor module, and adjusting the water flow velocity in the test box through the water flow simulation component to simulate the flow environment of the seabed; Starting a pore water pressure simulation component to inject natural gas and water into the storage layer at the same time, and stopping the pore water pressure simulation component when the landslide body produces a landslide; The sensor module and the camera module are used to record the pressure of the test box during landslide and the landslide range of the landslide body.

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