Seepage subsurface erosion test system and method based on multidirectional high-frequency vibration

Abstract

The invention relates to a seepage subsurface erosion test system based on multidirectional high-frequency vibration. The system comprises a vertical vibration assembly, a horizontal vibration assembly, a seepage erosion chamber, a water supply assembly and a measurement assembly, the vertical vibration assembly and the horizontal vibration assembly define a vibration cavity, and the permeation corrosion chamber is located in the vibration cavity and used for carrying out high-frequency loading on a test soil sample in the permeation corrosion chamber; the water supply assembly is used for conveying water flow with preset pressure into the permeation corrosion chamber and collecting water and soil sample particles flowing out of the permeation corrosion chamber; the measuring assembly is used for monitoring test parameters of the system. Compared with the prior art, the method has the advantages of better conforming to actual conditions, higher test accuracy, higher practicability and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of soil mechanics seepage erosion indoor testing, and in particular to a seepage erosion testing system and method based on multi-directional high-frequency vibration. Background Art

[0002] With the growing demand for transportation driven by economic development, my country's transportation infrastructure construction has entered a period of rapid development. Unlike conventional structures near water, high-speed rail subgrades are subject to both seepage forces and train vibration loads. This vibration load frequency increases with increasing train speed. For example, a 400 km / h high-speed train can generate vibrations up to approximately 50 Hz on the subgrade.

[0003] For example, the invention with publication number CN110907329A discloses a large-scale corrosion test system and a test method thereof, which belongs to the field of test equipment technology, and includes a test box, a water inlet device, a water outlet device, a screening device and a pressure control device. The test box includes a sample chamber, a water inlet chamber and a water outlet chamber. The water inlet device includes a liftable upstream water tank, the water outlet device includes a liftable downstream water tank, and a plurality of screening devices with different particle sizes are arranged in series on the pipeline connecting the downstream water tank and the water outlet chamber. A recovery box is provided at the water outlet of the downstream water tank. The screening device includes an electronic scale and a water tank. A filter is provided in the water tank. The pressure control device includes a vertical pressure sensor and a vertical displacement sensor.

[0004] However, in the field of soil mechanics seepage erosion test technology, the above-mentioned existing erosion test devices often consider the soil erosion characteristics under the combined action of simple water head or water head and static load. However, the erosion development process of high-speed railway subgrade in the actual operating environment is significantly different from that under the action of simple water head load. Due to the current lack of high-frequency loading test technology, research on the erosion characteristics of subgrade soil under high-frequency vibration conditions is still blank.

[0005] In summary, there is an urgent need for a multi-directional high-frequency vibration-seepage corrosion test system and method. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art that only considers the simple head effect, does not consider the influence of high-frequency vibration on soil seepage and erosion, and the experimental results deviate greatly from the actual results, and to provide a seepage and erosion test system and method based on multi-directional high-frequency vibration.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] This solution provides a seepage and erosion test system based on multi-directional high-frequency vibration, which includes a vertical vibration component, a horizontal vibration component, an erosion chamber, a water supply component and a measurement component; the vertical vibration component and the horizontal vibration component enclose a vibration cavity, the erosion chamber is located in the vibration chamber, and is used to perform high-frequency loading on the test soil sample in the erosion chamber; the water supply component is used to deliver water at a preset pressure into the erosion chamber and collect water and soil sample particles flowing out of the erosion chamber; the measurement component is used to monitor the test parameters of the system.

[0009] Preferably, the system also includes a frame, which includes a horizontal rod and a base. The vertical vibration assembly includes a vertical high-frequency actuator and a vertical reaction pier. The vertical high-frequency actuator is installed on the horizontal rod, and the vertical reaction pier is installed on the base. The vertical reaction pier is located directly below the vertical high-frequency actuator. The erosion chamber is located between the vertical high-frequency actuator and the vertical reaction pier, and is used to load the erosion chamber with vertical high-frequency vibration.

[0010] Preferably, the frame also includes a first vertical rod and a second vertical rod arranged opposite to each other, the horizontal vibration assembly includes a horizontal high-frequency actuator and a horizontal reaction pier arranged horizontally opposite to each other, the horizontal high-frequency actuator is vertically installed on the first vertical rod, the horizontal reaction pier is vertically installed on the second vertical rod, and the erosion chamber is located between the horizontal high-frequency actuator and the horizontal reaction pier, for loading the erosion chamber with horizontal high-frequency vibration.

[0011] Preferably, the vertical high-frequency actuator and the horizontal high-frequency actuator are both hydraulic loading structures, and the hydraulic loading structure is connected to a controller for adjusting the loading conditions of the hydraulic loading structure. The hydraulic loading structure is equipped with a pressure sensor, a displacement sensor and an acceleration sensor for monitoring the surrounding pressure, displacement and acceleration of the test soil sample.

[0012] Preferably, the loading frequency of the hydraulic loading structure is less than or equal to 100 Hz, the vibration acceleration of the hydraulic loading structure is less than or equal to 10 times the acceleration of gravity, and the vibration displacement of the hydraulic loading structure is less than or equal to 10 mm.

[0013] Preferably, the water supply component includes a pressure-controlled water source and a particle collection cylinder. The end of the erosion chamber close to the horizontal vibration component is connected to the pressure-controlled water source through a water pipe. The side of the erosion chamber away from the water pipe is provided with a permeable porous steel plate, and the particle collection cylinder is connected based on the permeable porous steel plate to collect water and soil-like particles discharged from the erosion chamber, and the collected water is filtered and then transported back to the pressure-controlled water source.

[0014] Preferably, the outside of the test soil sample is covered with a rubber membrane, and an inlet filter and an outlet filter are provided in the erosion chamber. The inlet filter is located between the water pipe and the rubber membrane, and the outlet filter is located between the rubber membrane and the permeable porous steel plate.

[0015] Preferably, the water inlet and the water outlet of the erosion chamber are both provided with water pressure sensors for monitoring the water pressure in the erosion chamber.

[0016] Preferably, a flow meter and a piezometer are pre-buried inside the test soil sample, the flow meter is used to monitor the fluid flow inside the test soil sample, and the piezometer is used to monitor the excess void pressure inside the test soil sample.

[0017] This solution also provides a method for a seepage corrosion test system based on multi-directional high-frequency vibration, comprising the following steps:

[0018] S1: placing a test soil sample in an erosion chamber, wherein the outer wall of the test soil sample includes a rubber membrane;

[0019] S2: The water supply component is adjusted to a preset pressure and delivered to the erosion chamber, and the water and soil sample particles discharged from the erosion chamber are collected, and the seepage state in the erosion chamber is monitored by the measuring component;

[0020] S3: When the seepage state in the erosion chamber stabilizes, adjust the vertical vibration assembly and the horizontal vibration assembly to load the test soil sample to the preset initial stress state, and monitor the test parameters of the system through the measurement assembly.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) In this scheme, the test soil sample is placed in the erosion chamber, which is placed in a vibration cavity enclosed by a vertical vibration component and a horizontal vibration component, and the test soil sample is subjected to high-frequency vibration loading in the vertical and horizontal directions. Water is supplied to the erosion chamber based on the water supply component, and particulate matter is collected. The measurement component is installed in the corresponding position to monitor various test parameters during the test for subsequent analysis. The system can accurately simulate the scene of high-frequency vibration and seepage acting together on the roadbed soil in the actual operation environment of the high-speed rail, filling the gap in the previous lack of high-frequency loading test technology and improving the accuracy and practicality of the test.

[0023] (2) In this scheme, both the vertical and horizontal vibration components are hydraulically adjusted structures, and the loading conditions are adjusted by the controller to achieve high-frequency loading of the electro-hydraulic servo system. The maximum loading frequency can reach 100 Hz, the vibration acceleration can reach 10 g, and the vibration displacement can reach 10 mm, expanding the range of system test simulation. By adjusting the loading conditions by the controller, the vibration direction can be considered perpendicular to the penetration direction and parallel to the penetration direction during the test. It can also take into account the intermittent characteristics of the load during the test, which is more in line with the actual working conditions of the soil sample and improves the accuracy of the test simulation.

[0024] (3) This solution adjusts the loading conditions of the vertical vibration component and the horizontal vibration component through the controller, and adjusts the water supply pressure into the erosion chamber through the pressure-controlled water source, so as to meet the test conditions of seepage and erosion of the test soil sample. After the specific experimental parameters are measured by the measurement component, they can be transmitted to the host computer for subsequent analysis. The system is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a multi-directional high-frequency vibration seepage and corrosion test system according to an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the structure of the etch system according to an embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the structure of a high-frequency actuator according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the arrangement structure of the measuring assembly on the hydraulic adjustment structure according to an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the structure of a measurement system according to an embodiment of the present invention;

[0030] The figure shows: 1. frame, 2. vertical high-frequency actuator, 3. vertical reaction pier, 4. horizontal high-frequency actuator, 5. horizontal reaction pier, 6. erosion chamber, 7. test soil sample, 8. inflow end filter, 9. outflow end filter, 10. pressure-controlled water source, 11. flow meter, 12. water pressure sensor, 13. piezometer, 14. particle collection cylinder, 15. water pipe, 16. controller, 17. force sensor, 18. displacement sensor, 19. acceleration sensor, 20. rubber membrane, 21. permeable porous steel plate. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention 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. Therefore, they should not be understood as limiting the present invention.

[0035] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0036] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment provides a seepage and erosion test system based on multi-directional high-frequency vibration, which includes a vertical vibration component, a horizontal vibration component, an erosion chamber 6, a water supply component and a measurement component; the vertical vibration component and the horizontal vibration component enclose a vibration cavity, and the erosion chamber 6 is located in the vibration cavity, which is used to perform high-frequency loading on the test soil sample 7 in the erosion chamber 6; the water supply component is used to deliver water of a preset pressure into the erosion chamber 6, and collect water and soil sample particles flowing out of the erosion chamber 6; the measurement component is used to monitor the test parameters of the system.

[0039] The test soil sample 7 is placed in the erosion chamber 6, which is then placed in a vibration cavity enclosed by a vertical vibration assembly and a horizontal vibration assembly. High-frequency vibration loading is applied to the test soil sample 7 in both vertical and horizontal directions. Water is supplied to the erosion chamber 6 based on the water supply assembly, and particulate matter is collected. The measurement assembly is installed in the corresponding position to monitor various test parameters during the test for subsequent analysis. This system can accurately simulate the scenario in which high-frequency vibration and seepage act together on the roadbed soil in the actual operating environment of high-speed rail, filling the gap in the previous lack of high-frequency loading test technology and improving the accuracy and practicality of the test.

[0040] In this embodiment, Figure 3 and Figure 4 As shown, the system also includes a frame 1, which includes a horizontal rod and a base. The vertical vibration assembly includes a vertical high-frequency actuator 2 and a vertical reaction pier 3. The vertical high-frequency actuator 2 is installed on the horizontal rod, and the vertical reaction pier 3 is installed on the base. The vertical reaction pier 3 is located directly below the vertical high-frequency actuator 2. The erosion chamber 6 is located between the vertical high-frequency actuator 2 and the vertical reaction pier 3, and is used to load the erosion chamber 6 with vertical high-frequency vibration.

[0041] In this embodiment, the frame 1 also includes a first vertical rod and a second vertical rod arranged opposite to each other, and the horizontal vibration assembly includes a horizontal high-frequency actuator 4 and a horizontal reaction pier 5 arranged horizontally opposite to each other. The horizontal high-frequency actuator 4 is vertically installed on the first vertical rod, and the horizontal reaction pier 5 is vertically installed on the second vertical rod. The erosion chamber 6 is located between the horizontal high-frequency actuator 4 and the horizontal reaction pier 5, and is used to load horizontal high-frequency vibration to the erosion chamber 6.

[0042] In this embodiment, the vertical high-frequency actuator 2 and the horizontal high-frequency actuator 4 are both hydraulic loading structures. The hydraulic loading structure is connected to a controller 16 for adjusting the loading conditions of the hydraulic loading structure. A pressure sensor 17, a displacement sensor 18 and an acceleration sensor 19 are installed on the hydraulic loading structure for monitoring the surrounding pressure, displacement and acceleration of the test soil sample 7.

[0043] Both the vertical and horizontal vibration assemblies are hydraulically adjustable, and the loading conditions are adjusted via a controller, enabling high-frequency loading of the electro-hydraulic servo system. The maximum loading frequency reaches 100Hz, with vibration accelerations up to 10g and displacements up to 10mm, expanding the range of system test simulations. Adjusting the loading conditions via the controller allows for testing with the vibration direction perpendicular or parallel to the infiltration direction, and also accounts for intermittent load characteristics during the test, better matching the actual working conditions of the soil sample and improving the accuracy of the test simulation.

[0044] In this embodiment, Figure 2 and Figure 5As shown, the water supply component includes a pressure-controlled water source 10 and a particle collecting cylinder 14. The end of the erosion chamber 6 close to the horizontal vibration component is connected to the pressure-controlled water source 10 through a water pipe 15. A permeable porous steel plate 21 is provided on the side of the erosion chamber 6 away from the water pipe 15, and the particle collecting cylinder 14 is connected based on the permeable porous steel plate 21 to collect water and soil particles discharged from the erosion chamber 6. The collected water is filtered and then transported back to the pressure-controlled water source 10.

[0045] In this embodiment, the outer side of the test soil sample 7 is covered with a rubber membrane 20, and an inlet end filter screen 7 and an outlet end filter screen 9 are provided in the erosion chamber 6. The inlet end filter screen 7 is located between the water pipe 15 and the rubber membrane 20, and the outlet end filter screen 9 is located between the rubber membrane 20 and the permeable porous steel plate 21.

[0046] Furthermore, water pressure sensors 12 are provided at the water inlet and the water outlet of the erosion chamber 6 for monitoring the water pressure in the erosion chamber 6 .

[0047] Furthermore, a flow meter 11 and a piezometer 13 are pre-buried inside the test soil sample 7 . The flow meter 11 is used to monitor the fluid flow inside the test soil sample 7 , and the piezometer 13 is used to monitor the excess void pressure inside the test soil sample 7 .

[0048] Specifically, in combination with the above features, this embodiment provides a more specific multi-directional high-frequency vibration seepage corrosion test system, including a frame 1, which adopts a four-column frame type;

[0049] A vertical high-frequency actuator 2 is provided at the upper end of the frame 1 to achieve vertical vibration. A vertical reaction pier 3 is provided at the lower end of the frame 1, and the vertical reaction pier 3 is located directly below the vertical high-frequency actuator 2. A horizontal high-frequency actuator 4 is provided at the left end of the frame 1 to achieve horizontal vibration. A horizontal reaction pier 5 is provided at the lower end of the frame 1, and the horizontal reaction pier 5 is located directly to the right of the horizontal high-frequency actuator 4. The loading conditions of the vertical high-frequency actuator 2 and the horizontal high-frequency actuator 4 are precisely controlled by the controller 16. The maximum loading frequency can reach 100 Hz, the vibration acceleration can reach 10 g, and the vibration displacement can reach 10 mm. The vertical high-frequency actuator 2 achieves vertical vibration of the test soil sample 7, and the horizontal high-frequency actuator 5 achieves horizontal vibration of the test soil sample 7.

[0050] The erosion chamber 6 is one of the essential components of the high-frequency vibration seepage and erosion test. During the test, the erosion chamber 6 is arranged between the vertical reaction pier 3, the vertical high-frequency actuator 2 and the horizontal high-frequency actuator 5 and the horizontal high-frequency actuator 4. A test soil sample 7 is placed in the erosion chamber 6, and a flow meter 11 and a piezometer 13 are buried in the test soil sample 7. The outer wall of the test soil sample 7 is wrapped with a rubber membrane 20.

[0051] The water supply assembly includes a pressure-controlled water source 10, a particle collection cylinder 14, and a water pipe 15. The pressure-controlled water source 10 provides water and maintains controllable and adjustable water pressure during the test. The pressure-controlled water source 10 is connected to the erosion chamber 6 and the particle collection cylinder 14 via the water pipe 15, enabling water circulation throughout the entire device. The erosion chamber 6 is flanked by an inlet filter 8 and an outlet filter 9. The left and right sides of the erosion chamber 6 are connected to the water pipe 15, connecting the water inlet of the erosion chamber 6 to the pressure-controlled water source 10 via the water pipe 15. The drain outlet of the erosion chamber 6 is connected to the particle collection cylinder 14 via the water pipe. A permeable porous steel plate 21 is installed at the drain outlet of the erosion chamber.

[0052] The measuring components include a flow meter 11, a water pressure sensor 12, a piezometer 13, a particle collecting tube 14, a pressure sensor 17, a displacement sensor 18, and an acceleration sensor 19. The flow meter 11 is used to monitor the fluid flow inside the test soil sample 7. The water pressure sensor 12 is arranged at the drain port and the outlet of the erosion chamber 6 to monitor the water pressure of the fluid. The piezometer 13 is used to monitor the excess pore water pressure inside the test soil sample 7. The particle collecting tube 14 is used to collect lost particles to obtain the mass of lost particles. The pressure sensor 17 is used to monitor the surrounding pressure of the test soil sample 7. The displacement sensor 18 is used to monitor the displacement of the test soil sample 7. The acceleration sensor 19 is used to monitor the acceleration of the test soil sample 7.

[0053] The system adjusts the loading conditions of the vertical vibration component and the horizontal vibration component through the controller, and adjusts the water supply pressure to the erosion chamber through the pressure-controlled water source to meet the test conditions of seepage and erosion of the test soil samples. After the specific experimental parameters are measured by the measurement component, they can be transmitted to the host computer for subsequent analysis. The system is easy to operate.

[0054] This embodiment also provides a method for a seepage corrosion test system based on multi-directional high-frequency vibration, comprising the following steps:

[0055] S1: placing a test soil sample 7 in an erosion chamber 6, wherein the outer wall of the test soil sample 7 includes a rubber membrane 20;

[0056] S2: The water supply component is adjusted to a preset pressure and delivered to the erosion chamber 6, and the water and soil particles discharged from the erosion chamber 6 are collected, and the seepage state in the erosion chamber 6 is monitored by the measuring component;

[0057] S3: When the seepage state in the erosion chamber 6 is stabilized, the vertical vibration assembly and the horizontal vibration assembly are adjusted to load the test soil sample 7 to a preset initial stress state, and the test parameters of the system are monitored by the measurement assembly.

[0058] In combination with the above-mentioned specific multi-directional high-frequency vibration seepage corrosion test system, the specific steps of the test method are as follows:

[0059] 1) Place the prepared test soil sample in the erosion chamber, with the outer wall of the test soil sample wrapped with a rubber membrane;

[0060] 2) The water source is supplied by a pressure-controlled water source and the water pressure is controllable and adjustable. The water flows through the inlet filter into the erosion chamber, then flows out of the permeable porous steel plate through the outlet filter, and after the particles are collected by the particle collection cylinder, returns to the pressure-controlled water source to complete the water circulation;

[0061] 3) After the seepage in the erosion chamber stabilizes, adjust the controller to load the test soil sample to the required initial stress state through the vertical high-frequency actuator and the horizontal high-frequency actuator;

[0062] 4) Various test parameters are monitored by various components in the measurement system. The flow meter monitors the fluid flow inside the test soil sample. The water pressure sensor monitors the water pressure of the fluid. The piezometer monitors the excess pore water pressure inside the test soil sample. The particle collection tube collects the lost particles to obtain the lost particle mass. The pressure sensor monitors the surrounding pressure of the test soil sample. The displacement sensor monitors the displacement of the test soil sample. The acceleration sensor monitors the acceleration of the test soil sample.

[0063] This multi-directional, high-frequency vibration seepage erosion test system and method accurately simulates the combined effects of high-frequency vibration and seepage on roadbed soil in actual high-speed rail operating environments, filling the gap previously lacking in high-frequency loading testing technology. This system and method has played a positive role in promoting national and industry research on soil erosion characteristics and macro- and micro-mechanical mechanisms under vibration conditions, particularly high-frequency vibration.

[0064] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A seepage corrosion test system based on multi-directional high-frequency vibration, characterized in that: A vertical vibration component, a horizontal vibration component, an erosion chamber (6), a water supply component and a measurement component; the vertical vibration component and the horizontal vibration component enclose a vibration cavity; the erosion chamber (6) is located in the vibration cavity and is used to perform high-frequency loading on a test soil sample (7) in the erosion chamber (6); the water supply component is used to deliver a water flow of a preset pressure into the erosion chamber (6) and collect water and soil sample particles flowing out of the erosion chamber (6); and the measurement component is used to monitor the test parameters of the system.

2. A seepage corrosion test system based on multi-directional high-frequency vibration according to claim 1, characterized in that: The system also includes a frame (1), the frame (1) includes a horizontal rod and a base, the vertical vibration assembly includes a vertical high-frequency actuator (2) and a vertical reaction pier (3), the vertical high-frequency actuator (2) is installed on the horizontal rod, the vertical reaction pier (3) is installed on the base, the vertical reaction pier (3) is located directly below the vertical high-frequency actuator (2), and the erosion chamber (6) is located between the vertical high-frequency actuator (2) and the vertical reaction pier (3) and is used to load the erosion chamber (6) with vertical high-frequency vibration.

3. A seepage corrosion test system based on multi-directional high-frequency vibration according to claim 2, characterized in that: The frame (1) further comprises a first vertical rod and a second vertical rod arranged opposite to each other, the horizontal vibration assembly comprises a horizontal high-frequency actuator (4) and a horizontal reaction pier (5) arranged horizontally opposite to each other, the horizontal high-frequency actuator (4) is vertically mounted on the first vertical rod, the horizontal reaction pier (5) is vertically mounted on the second vertical rod, and the erosion chamber (6) is located between the horizontal high-frequency actuator (4) and the horizontal reaction pier (5) and is used to apply horizontal high-frequency vibration loading to the erosion chamber (6).

4. A seepage corrosion test system based on multi-directional high-frequency vibration according to claim 3, characterized in that: The vertical high-frequency actuator (2) and the horizontal high-frequency actuator (4) are both hydraulic loading structures. The hydraulic loading structure is connected to a controller (16) for adjusting the loading conditions of the hydraulic loading structure. The hydraulic loading structure is equipped with a pressure sensor (17), a displacement sensor (18) and an acceleration sensor (19) for monitoring the surrounding pressure, displacement and acceleration of the test soil sample (7).

5. The seepage corrosion test system based on multi-directional high-frequency vibration according to claim 4, characterized in that: The loading frequency of the hydraulic loading structure is less than or equal to 100 Hz, the vibration acceleration of the hydraulic loading structure is less than or equal to 10 times the acceleration of gravity, and the vibration displacement of the hydraulic loading structure is less than or equal to 10 mm.

6. The seepage corrosion test system based on multi-directional high-frequency vibration according to claim 1, characterized in that: The water supply assembly comprises a pressure-controlled water source (10) and a particle collecting cylinder (14); one end of the erosion chamber (6) close to the horizontal vibration assembly is connected to the pressure-controlled water source (10) via a water pipe (15); a permeable porous steel plate (21) is provided on the side of the erosion chamber (6) away from the water pipe (15); and the particle collecting cylinder (14) is connected to the permeable porous steel plate (21) for collecting water and soil particles discharged from the erosion chamber (6); and the collected water is filtered and then transported back to the pressure-controlled water source (10).

7. A seepage corrosion test system based on multi-directional high-frequency vibration according to claim 6, characterized in that: The outer side of the test soil sample (7) is covered with a rubber membrane (20), and an inflow end filter screen (7) and an outflow end filter screen (9) are provided in the erosion chamber (6). The inflow end filter screen (7) is located between the water pipe (15) and the rubber membrane (20), and the outflow end filter screen (9) is located between the rubber membrane (20) and the permeable porous steel plate (21).

8. The seepage corrosion test system based on multi-directional high-frequency vibration according to claim 6, characterized in that: The water inlet and the water outlet of the erosion chamber (6) are both provided with water pressure sensors (12) for monitoring the water pressure in the erosion chamber (6).

9. The seepage corrosion test system based on multi-directional high-frequency vibration according to claim 1, characterized in that: A flow meter (11) and a piezometer (13) are pre-buried inside the test soil sample (7); the flow meter (11) is used to monitor the fluid flow inside the test soil sample (7); and the piezometer (13) is used to monitor the excess void pressure inside the test soil sample (7).

10. A method for a seepage corrosion test system based on multi-directional high-frequency vibration according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: placing a test soil sample (7) in an erosion chamber (6), wherein the outer wall of the test soil sample (7) includes a rubber membrane (20); S2: The water supply component is adjusted to a preset pressure and delivered to the erosion chamber (6), and the water and soil sample particles discharged from the erosion chamber (6) are collected, and the seepage state in the erosion chamber (6) is monitored by the measuring component; S3: When the seepage state in the erosion chamber (6) is stabilized, the vertical vibration component and the horizontal vibration component are adjusted to load the test soil sample (7) to a preset initial stress state, and the test parameters of the system are monitored by the measurement component.

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