A submarine landslide simulation experiment device and method

Abstract

The application discloses a submarine landslide simulation experiment device and method, relates to the technical field of marine geological disaster simulation, and provides a submarine landslide simulation experiment device, which comprises a sealed test box, and at least one side of the test box is provided with a visual structure; a submarine simulation assembly is arranged at the bottom of the test box, the submarine simulation assembly comprises a bearing part, the inclination of the bearing part is adjustable, and a sediment layer, a trap layer and a storage layer are sequentially arranged on the bearing part to form a landslide body; a submarine water pressure simulation assembly; a water flow simulation assembly; a pore water pressure simulation assembly; and a measuring assembly comprising a camera module and a sensor module, wherein the camera module obtains image information of the submarine 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 body. The submarine landslide simulation experiment device can simulate a complex submarine environment, thereby improving the accuracy of the experimental results in predicting the actual submarine landslide condition.

Description

TECHNICAL FIELD

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

[0002] Submarine landslide is a serious marine geological disaster, which poses a great threat to marine engineering facilities, submarine cables, etc. Currently, the research on submarine landslide mainly focuses on theoretical analysis and field observation, but due to the complexity and inaccessibility of the submarine environment, these methods have certain limitations. Moreover, traditional research on submarine landslide mainly focuses on a single factor, such as only considering the decomposition of natural gas hydrate or only considering the change of wave, etc. However, in the actual marine environment, submarine landslide is often induced by the interaction of multiple factors, including but not limited to the coupling of complex geological structure, changing hydrodynamic conditions, decomposition of natural gas hydrate, etc. This complexity makes it extremely difficult to accurately understand and predict the occurrence mechanism of submarine landslide.

[0003] In the actual process of submarine landslide, geological parameters may change over time and environment, such as the degree of consolidation of submarine sediments, the change of pore water pressure, etc. However, the existing technology cannot dynamically adjust during simulation, resulting in that the simulation results cannot well reflect the dynamic change process of submarine landslide. The occurrence of submarine landslide is affected by multiple factors, such as submarine water flow erosion, submarine inclination, sediment properties, decomposition of natural gas hydrate, change of submarine depth, etc. The interaction between these factors is very complex, and the existing simulation device cannot well reflect the actual process of submarine landslide. SUMMARY

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

[0005] The present application embodiment also provides a submarine landslide simulation method.

[0006] According to an embodiment of the first aspect of this application, a submarine landslide simulation experimental device is provided, comprising a sealed test chamber, at least one side of which is provided with a visualization structure; a submarine simulation component disposed at the bottom of the test chamber, the submarine simulation component including a support member, the inclination of which is adjustable, and a sediment layer, a trapping layer, and a storage layer sequentially disposed on the support member to form a landslide body; a submarine water pressure simulation component for adjusting the pressure inside the test chamber; a water flow simulation component for adjusting the liquid flow direction and velocity inside the test chamber; a pore water pressure simulation component for injecting gas or water into the storage layer; and a measurement component including a camera module and a sensor module, the camera module acquiring image information of the submarine simulation component through the visualization structure, and the sensor module acquiring the pressure conditions inside the test chamber and the pressure conditions of the landslide body.

[0007] The aforementioned submarine landslide simulation experimental device has at least the following beneficial effects: It adjusts the inclination of the bearing components according to the required simulation experiment to simulate landslides with different slopes; it adjusts the water pressure in the test chamber to the required preset value using a submarine water pressure simulation component; it uses a water flow simulation component to adjust the liquid flow direction and velocity in the test chamber; it uses a pore water pressure simulation component to inject gas or water into the storage layer of the landslide body; it adjusts multiple sets of data to simulate landslide conditions under different environments; and it uses a measurement component to record landslide data. This submarine landslide simulation experimental device can realistically simulate complex submarine environments and reproduce scenarios where multiple factors interact, such as the coupling of factors like seawater pressure, submarine water flow erosion, seabed dip angle, stratigraphic characteristics, and unstable decomposition of natural gas hydrates, thereby improving the accuracy of the experimental results in predicting actual submarine landslide situations. It helps to deeply study the interrelationships between different factors and provides detailed data for analyzing the mechanism of submarine landslides.

[0008] According to the submarine landslide simulation experimental apparatus described in the first aspect of this application, the measuring component further includes a measuring element. The landslide body is disposed on one side of the bottom of the test chamber, and the measuring element is disposed on the other side of the bottom of the test chamber. The measuring element is connected to the bearing element, and the measuring element is used to measure the landslide area when the landslide body slides.

[0009] According to the submarine landslide simulation experimental apparatus described in the first aspect of this application, the measuring element is provided with a plurality of grid lines, which are arranged in a crisscross pattern to form a measuring unit for measurement.

[0010] According to the first aspect of the embodiment of the submarine landslide simulation experimental device, the water flow simulation component includes a driving component and a rotating paddle, the rotating paddle is disposed on the side wall of the test chamber, and the driving component is used to drive the rotating paddle to rotate.

[0011] According to the first aspect of the embodiment of the present application, the seabed landslide simulation experimental device includes a first pressurizer and a second pressurizer. The first pressurizer is used to inject gas into the test chamber, and the second pressurizer is used to inject liquid into the test chamber.

[0012] According to the submarine landslide simulation experimental apparatus described in the first aspect of this 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 reservoir, and the fourth pressurizer is used to inject natural gas into the reservoir.

[0013] According to the submarine landslide simulation experimental device described in the first aspect of this application, both the third pressurizer and the fourth pressurizer are 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 first aspect of the embodiment of the present application, the seabed landslide simulation experimental device further includes an adjustment plate and a lifter. One end of the support member is rotatably connected to the bottom of the test chamber, 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.

[0015] According to the submarine landslide simulation experimental apparatus described in the first aspect of this application, the side of the test chamber is made of glass to form the visualization structure.

[0016] According to an embodiment of the second aspect of this application, a method for simulating submarine landslides is provided, comprising the following steps:

[0017] The support is adjusted to a preset inclination, and a landslide body consisting of a sediment layer, a trap layer, a reservoir layer, a trap layer, and a sediment layer is arranged sequentially on the support. A sensor module is installed in the landslide body.

[0018] The landslide body was left to stand for 12 hours.

[0019] After filling the test chamber with water using the seabed water pressure simulation component, gas is then added to bring the pressure inside the test chamber to the required preset value.

[0020] The camera module and sensor module are turned on, and the water flow rate in the test chamber is adjusted through the water flow simulation component to simulate the seabed flow environment;

[0021] The pore water pressure simulation component is activated, and natural gas and water are simultaneously injected into the storage layer. When the landslide occurs, the pore water pressure simulation component is stopped.

[0022] The sensor module and the camera module record the pressure of the test chamber and the landslide range of the landslide body during the landslide.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The present application will be further described below with reference to the accompanying drawings and embodiments;

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

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

[0027] Figure 3 This is a schematic diagram of the structure of the submarine landslide simulation experimental device according to an embodiment of this application. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the structure of the submarine landslide simulation experimental device according to an embodiment of this application. Figure 2 .

[0029] Attached reference numerals: 1-partition, 2-top cover, 3-bottom cover, 4-auxiliary plate, 5-legs, 6-jack top plate, 7-slope bottom plate, 8-adjusting 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-generating drive motor, 23-flow-generating rotary propeller, 24-fixed device, 26-second air compressor, 27-flow meter, 28-air injection pipe, 30-enclosed layer, 31-sensor, 32-measuring device, 34-second water tank, 35-water injection pipe, 37-second water pump, 38-storage layer, 39-transparent plexiglass, 40-landslide body, 41-red grid. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0031] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0034] Reference Figures 1 to 3 This application provides a submarine landslide simulation experimental device, which includes a test chamber, 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 test chamber has an openable top for facilitating the placement of other components inside. Under normal operating conditions, the test chamber is sealed. At least one side of the test chamber has a viewing structure that allows observation of the interior.

[0036] The seabed simulation component is located at the bottom of the test chamber. The component includes a support structure with adjustable inclination. Sediment layer 11, trap layer 30, and reservoir layer 38 are sequentially arranged on the support structure from the inside out, forming a landslide body 40. Depending on the seabed depth, the remodeling ratio of the landslide body 40 is varied to study the seabed landslide process under different sediment characteristics.

[0037] Among them, the trap layer 30 is mainly composed of clay, mudstone and shale with poor 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 located at the bottom of the test chamber. The component includes a support structure with adjustable inclination. Sediment layer 11, trap layer 30, reservoir layer 38, and sediment layer 11 are sequentially arranged on the support structure to 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 inside the test chamber. Specifically, the test chamber is filled with water using the seabed water pressure simulation component, and then air is injected to simulate the seabed water pressure.

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

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

[0042] The measurement components include a camera module and a sensor module. The camera module acquires image information of the seabed simulation component through a visualization structure, while the sensor module is used to acquire the pressure conditions inside the test chamber and the pressure conditions of the landslide body 40.

[0043] In use, the inclination of the bearing is adjusted according to the required simulation experiment to simulate landslides 40 with different slopes. The water pressure in the test chamber is adjusted to the required preset value by the seabed water pressure simulation component. The liquid flow direction and speed in the test chamber are adjusted by the water flow simulation component. Gas or water is injected into the storage layer 38 of the landslide 40 in conjunction with the pore water pressure simulation component. The landslide conditions of the landslide 40 are simulated in different environments by adjusting multiple sets of data. The landslide data is then recorded by the measurement component.

[0044] The submarine landslide simulation experimental device proposed in this application can realistically simulate complex seabed environments and accurately reproduce scenarios where multiple factors interact, such as the coupling of factors like seawater pressure, seabed current erosion, seabed dip angle, geological characteristics, and unstable decomposition of natural gas hydrates. This improves the accuracy of experimental results in predicting actual submarine landslide situations. It facilitates in-depth research into the interrelationships between different factors, provides detailed data for analyzing submarine landslide mechanisms, and fills the gaps in existing simulation experimental devices that simulate single-factor or simple combination-factor scenarios for complex multi-factor scenarios.

[0045] In some embodiments, the sides of the test chamber are made of glass, thereby forming a visualization structure that facilitates the photographing and observation of the relevant processes.

[0046] The measurement assembly also includes a measuring element 32. The landslide body 40 is located on one side of the bottom of the test chamber, and the measuring element 32 is located on the other side of the bottom of the test chamber. The measuring element 32 is connected to the bearing component and is used to measure the landslide area when the landslide body 40 slides. The measuring element 32 is provided with several grid lines, which are arranged in a crisscross pattern to form a measurement unit for measurement. The coverage area and displacement of the landslide can be quickly read through the measurement unit.

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

[0048] The test chamber is equipped with a pressure sensor on its top for monitoring hydrostatic pressure. An accelerometer is also installed on the top of the chamber to monitor the dynamic process of the submarine landslide. Measuring element 32 is equipped with a displacement sensor, a pore pressure sensor, and a stress-strain sensor to collect stress-strain and pore pressure changes during the submarine landslide process. Sediment layer 11 is equipped with multiple sets of pore pressure and stress-strain sensors to monitor pore pressure and stress-strain changes before the landslide begins. A high-definition camera 10 is positioned directly opposite the visualization structure to record the entire dynamic process of the submarine landslide.

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

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

[0051] The lifting device is a jack, and the supporting components include the jack top plate 6. The jack top plate 6 is lifted by four hydraulic jacks 9, thereby changing the tilt angle of the entire landslide body 40.

[0052] The bottom right side of the test chamber is the landslide observation area and data recording area. The measuring element 32 is located on this side, and stress-strain sensors and pore pressure sensors are evenly distributed on the measuring element 32 to record the stress-strain changes and pore pressure changes during the landslide process. Furthermore, the measuring element 32 is engraved with a 10cm × 10cm red grid 41 to study the influence range and area of ​​the landslide. In some embodiments, a slot is provided in the middle of the test chamber for installing an auxiliary plate 4, which is used to fix the sample (i.e., to assist in the formation of the landslide body 40).

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

[0054] In a specific embodiment, the driving component is a flow-generating drive motor 22, the rotating propeller is a flow-generating rotary 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-generating drive motor 22 to drive the flow-generating rotary propeller 23 to generate water flow, which is used to generate water flow with different flow rates and directions in the test chamber to simulate the real environment of seabed water flow.

[0055] 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 chamber, and the second pressurizer is used to inject liquid into the test chamber. 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 seabed water pressure simulation component also includes a pipe 14, a main control computer 21, a pressure gauge 19, a pressure relief valve, and a first water tank 17. The first water pump 18 pumps water from the first water tank 17 into the test chamber until it is full. Then, the main control computer 21 sets the corresponding program to make the first air compressor 20 start working and bring the pressure in the test chamber to the design water pressure.

[0057] In some embodiments, the seabed simulation component also includes a slope base plate 7, through which the landslide body 40 is effectively connected to the measuring element 32.

[0058] In some embodiments, the trap layer 30 is mainly composed of clay with poor permeability and aeration, 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. Layered sampling and compaction are performed using an auxiliary plate 4. The topography of the landslide body 40 is obtained through drilling data and shallow seismic profiling techniques. Furthermore, the submarine landslide process under different sediment characteristics can be studied by changing the remodeling ratio of the samples.

[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 natural gas into the storage layer 38. Both the third and fourth pressurizers are provided with a plurality of delivery pipes, and the output ports of all 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] 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 second water pump 37 injects water from the second water tank 34 into the storage layer 38, and the main control computer 21 controls the water injection flow rate and the air injection flow rate.

[0061] This application also provides a method for simulating a submarine landslide based on the above-mentioned submarine landslide simulation experimental device, including the following steps:

[0062] The support is adjusted to a preset tilt angle, and a landslide body 40 composed of a sediment layer 11, a trap layer 30, a storage layer 38, a trap layer 30, and a sediment layer 11 is arranged sequentially on the support. A sensor module is installed in the landslide body 40.

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

[0064] After the test chamber is filled with water using the seabed water pressure simulation component, gas is then injected to bring the pressure inside the test chamber to the required preset value. Specifically, water is pumped into the test chamber by the first water pump 18 in the first water tank 17 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 inside the test chamber to the design pressure.

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

[0066] The pore water pressure simulation component is activated, and natural gas and water are simultaneously injected into the storage layer 38. When the landslide body 40 causes a landslide, the pore water pressure simulation component is stopped.

[0067] Specifically, the main control computer 21 sets a program to cause the second air compressor 26 to inject gas into the storage layer 38 in the landslide body 40 through the air injection pipe 28 at a certain loading rate. At the same time, 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 its limit value, the slope of the landslide body 40 begins to landslide. The high-definition camera 10 is responsible for recording the submarine landslide process. The pore pressure sensor, stress-strain sensor, acceleration sensor, and displacement sensor record the changes in pore pressure and stress-strain in the landslide body 40, as well as the dynamic process of the submarine landslide.

[0068] The sensor module and camera module record the pressure of the test chamber and the landslide range of the landslide body 40 during the landslide. The video recording file of the high-definition camera 10 is saved to the main control computer 21, and the data stored by each sensor device during the landslide is also 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 transparent plexiglass 39.

[0069] The program of the second air compressor 26 is turned off, the high-definition camera 10 and the flow driver 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 the normal water pressure, and the first water pump 18 is turned on to pump water and clean the model box. The experiment is completed.

[0070] The experimental setup described in this application can realistically simulate complex seabed environments and accurately reproduce scenarios involving the combined effects of multiple factors, such as seawater pressure, seabed erosion, seabed dip, geological characteristics, and the unstable decomposition of natural gas hydrates. This enhances the accuracy of experimental results in predicting actual seabed landslides. It facilitates in-depth research into the interrelationships between different factors, providing detailed data for analyzing seabed landslide mechanisms. Furthermore, it can simulate seabed landslide processes under various working conditions, providing a reliable reference for the development of seabed engineering construction and protective measures, effectively reducing the risk of damage to seabed engineering projects due to landslides.

[0071] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A submarine landslide simulation experimental device, characterized in that: include A sealed test chamber, wherein at least one side of the test chamber is provided with a visualization structure; A seabed simulation component is located at the bottom of the test chamber. The seabed simulation component includes a support member with an adjustable inclination. A sediment layer, a trap layer, and a storage layer are sequentially arranged on the support member to form a landslide body. The ends of the two trap layers near the bottom of the landslide body are connected to wrap the storage layer. A seabed water pressure simulation component is used to adjust the pressure inside the test chamber; A water flow simulation component is used to adjust the direction and speed of liquid flow within the test chamber; A pore water pressure simulation component is used to inject gas or water into the storage layer; The measurement component includes a camera module and a sensor module. The camera module acquires image information of the seabed simulation component through the visualization structure, and the sensor module is used to acquire the pressure conditions inside the test chamber and the pressure conditions of the landslide body. The measuring component further includes a measuring element. The landslide body is located on one side of the bottom of the test chamber, and the measuring element is located on the other side of the bottom of the test chamber. The measuring element is connected to the bearing element. The measuring element is used to measure the landslide area when the landslide body slides. The measuring element is provided with several grid lines, and the several grid lines are arranged in a crisscross pattern to form a measuring unit for measurement.

2. The submarine landslide simulation experimental device according to claim 1, characterized in that: The water flow simulation component includes a drive unit and a rotating paddle. The rotating paddle is disposed on the side wall of the test chamber, and the drive unit is used to drive the rotating paddle to rotate.

3. 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 chamber, and the second pressurizer is used to inject liquid into the test chamber.

4. 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 reservoir, and the fourth pressurizer is used to inject natural gas into the reservoir.

5. The submarine landslide simulation experimental device according to claim 4, characterized in that: Both the third and fourth pressurizers are equipped with several delivery pipes, and the output ports of all the delivery pipes are arrayed in the storage layer.

6. The submarine landslide simulation experimental device according to claim 1, 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 chamber, 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 tilt of the support member.

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

8. A method for simulating submarine landslides, based on the submarine landslide simulation experimental apparatus described in any one of claims 1 to 7, characterized in that, Includes the following steps: The support is adjusted to a preset inclination, and a landslide body consisting of a sediment layer, a trap layer, a reservoir layer, a trap layer, and a sediment layer is arranged sequentially on the support. A sensor module is installed in the landslide body. The landslide body was left to stand for 12 hours. After filling the test chamber with water using the seabed water pressure simulation component, gas is then added to bring the pressure inside the test chamber to the required preset value. The camera module and sensor module are turned on, and the water flow rate in the test chamber is adjusted through the water flow simulation component to simulate the seabed flow environment; The pore water pressure simulation component is activated, and natural gas and water are simultaneously injected into the storage layer. When the landslide occurs, the pore water pressure simulation component is stopped. The sensor module and the camera module record the pressure of the test chamber and the landslide range of the landslide body during the landslide.

Images