An experimental device for simulating rainfall- wind erosion- freeze-thaw combined erosion of a slope

Abstract

This invention discloses an experimental device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes. It includes an experimental chamber and a door mounted on its front side via hinges. Locks are embedded in the right side of the front and rear sides of the door. This invention, through a series of structural features, allows personnel to flexibly adjust the slope and inclination of the soil carrier plate according to the slope's gradient and direction. This better simulates the actual slope's gradient and direction during experiments, avoiding significant deviations from the actual slope condition that could lead to large experimental errors. It is easily adaptable to experiments on different types of slope soils, improving simulation effectiveness, applicability, and flexibility. It assists personnel in conducting freeze-thaw experiments, timed automatic wind erosion experiments, and timed automatic water spraying experiments on slope soils. Furthermore, it helps personnel filter and collect dust and sand, reducing the direct and large-scale dispersion of dust and sand that could pollute the laboratory environment or affect the health of experimental personnel and the normal operation of experimental instruments.

Description

Technical Field

[0001] This invention relates to the field of slope soil testing technology, specifically to a test device for simulating a slope subjected to combined rainfall-wind erosion-freeze-thaw erosion. Background Technology

[0002] To evaluate the resistance of slope soil to wind erosion, water erosion, and freeze-thaw cycles, common experimental methods include wind erosion, water spraying, and freeze-thaw tests. During the experiment, a whole sample of slope soil is placed on a tray inside the test chamber. Wind erosion is simulated by mixing fine sand with gas, rainfall is simulated by spraying water, and freeze-thaw cycles are simulated by temperature control. By observing and detecting changes in the soil, researchers can determine its relevant properties and provide data support for slope engineering.

[0003] The existing slope soil test chamber has the following shortcomings: 1. The carrier plate lacks a flexible tilt angle adjustment mechanism, which cannot accurately simulate the actual state of slopes with different slopes, resulting in large experimental deviations, poor applicability and flexibility, and difficulty in adapting to different types of slope soil experiments; 2. In the wind and sand erosion experiment, dust and sand are easily dispersed directly and in large quantities, polluting the laboratory environment and potentially affecting the health of experimental personnel and the normal operation of experimental instruments; In view of this, this application proposes a test device to simulate the combined erosion of a slope by rainfall-wind erosion-freeze-thaw erosion, in order to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a test device for simulating the combined erosion of slopes by rainfall, wind erosion, and freeze-thaw cycles, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a test device for simulating a combined rainfall-wind erosion-freeze-thaw erosion slope, comprising an experimental chamber and a door mounted on its front side via a hinge, wherein a door lock is embedded on the front and rear right sides of the door, and the door lock is matched with a latch fixedly mounted on the inner wall of the right side of the experimental chamber, and further comprising: The soil carrier is inclined and has a groove at its bottom; The horizontal tilting and rotating support assembly is embedded in the inner wall of the bottom of the experimental chamber and is rotatably connected to the inner walls of the front and rear sides of the groove; the horizontal tilting and rotating support assembly is used to allow personnel to flexibly tilt and rotate the soil plate according to the slope and inclination. The high and low temperature integrated unit is located on the right side of the experimental chamber and is connected and fixed to the top right side of the experimental chamber. The high and low temperature integrated unit is used to allow personnel to simulate the experimental temperature as needed to heat or cool the experimental chamber to assist in the freeze-thaw experiment of the slope soil. The PLC controller is fixedly installed on the top right side of the experimental chamber. The water spraying assembly is embedded and fixed on the top of the experimental chamber, located above the soil carrier, and electrically connected to the PLC controller. The wind and sand erosion assembly is installed on the experimental chamber and located on the upper right of the soil carrier plate, and is electrically connected to the PLC controller. The wind and sand erosion assembly is used to assist personnel in conducting wind and sand erosion experiments on the slope soil after being connected to an external air compressor or other air supply equipment and controlled by the PLC controller. The water spray assembly is used to assist personnel in conducting water spray experiments on the slope soil after being connected to an external water supply pipe and controlled by the PLC controller.

[0006] Preferably, the horizontal tilting and rotating support assembly includes a rotating shaft that is sealed and rotatably embedded in the inner wall of the bottom of the experimental chamber. A rectangular through hole is opened on the bottom front side of the rotating shaft. A support rod is fixedly connected to the top right side of the rotating shaft. The support rod is rotatably installed between the inner walls of the front and rear sides of the groove. An inclined connecting rod located on the left side of the support rod is rotatably installed between the inner walls of the front and rear sides of the groove. A lifting seat is rotatably installed at the bottom end of the inclined connecting rod. The rotating shaft is slidably sleeved on the lifting seat. An electric telescopic rod with its protruding end fixedly connected to the bottom of the lifting seat is fixedly installed on the left side of the bottom end of the rotating shaft. An external gear ring is fixedly sleeved on the rotating shaft. A gear meshes on the left side of the external gear ring. A brake motor with its output shaft fixedly connected to the top of the gear is fixedly installed on the bottom left side of the experimental chamber.

[0007] Preferably, the water spraying assembly includes a rectangular shower head embedded and fixed on the top of the experimental chamber. The rectangular shower head is located above the soil carrier plate. A first solenoid valve is fixedly connected to the top of the rectangular shower head. An L-shaped water inlet pipe is fixedly connected to the top of the first solenoid valve. The first solenoid valve is electrically connected to the PLC controller.

[0008] Preferably, the wind and sand erosion assembly includes two second solenoid valves, which are respectively fixedly installed on the top and right side of the experimental chamber. The bottom end of the upper second solenoid valve and the left end of the right second solenoid valve both extend into the experimental chamber. The left end of the right second solenoid valve is connected to and fixedly connected to an inclined air blowing pipe, and the bottom end of the upper second solenoid valve is connected to and fixedly connected to a sand discharge pipe, which is located above the left end of the air blowing pipe. The top end of the upper second solenoid valve is connected to and fixedly connected to a sand storage hopper, and the right end of the right second solenoid valve is connected to and fixedly connected to an air inlet connector. Both second solenoid valves are electrically connected to a PLC controller.

[0009] Preferably, a dust collection bag connecting pipe is fixedly connected to the bottom left side of the experimental chamber, and an external thread is provided on the outside of the dust collection bag connecting pipe and an internal threaded pipe cap is screwed on.

[0010] Preferably, the bottom four corners of the experimental chamber are all fixedly connected with support legs.

[0011] Preferably, a stainless steel support shaft is fixedly connected between the front and rear inner walls of the groove, and a circular through hole is opened at the top of the front side of the support rod. Two first bearings are fixedly sleeved in the circular through hole, and the inner ring of the first bearing is fixedly sleeved with the outer side of the stainless steel support shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. The experimental chamber, soil carrier plate, and horizontal tilting and rotating support components are designed to allow personnel to flexibly adjust the slope and inclination of the soil carrier plate according to the slope gradient and inclination direction. This allows for better simulation of the actual slope gradient and inclination state during experiments, avoiding large deviations from the actual slope state and thus preventing significant experimental errors. It is also suitable for different types of slope soil experiments, improving simulation effect, applicability, and flexibility. 2. Combined with the integrated high and low temperature machine, water spraying component, wind and sand erosion component and PLC controller, it can assist personnel in conducting freeze-thaw tests, timed automatic wind and sand erosion tests and timed automatic water spraying tests on slope soil. 3. Combined with the dust collection bag connecting pipe, after connecting the dust collection bag connecting pipe to the external industrial dust collection and breathable bag with tools such as cable ties, it can help personnel to filter and collect dust and sand in a concentrated manner, reducing the phenomenon of dust and sand directly drifting out in large quantities, polluting the laboratory environment or affecting the health of experimental personnel and the normal operation of experimental instruments.

[0013] This invention incorporates a series of structures that allow personnel to flexibly adjust the slope and inclination of the soil carrier plate according to the slope gradient and direction. This enables better simulation of the actual slope gradient and direction for experimental work, avoiding significant deviations from the actual slope condition that could lead to large experimental errors. It is easily adaptable to experiments on different types of slope soil, improving simulation effectiveness, applicability, and flexibility. It can assist personnel in conducting freeze-thaw experiments, timed automatic wind and sand erosion experiments, and timed automatic water spraying experiments on slope soil. Furthermore, it can assist personnel in filtering and collecting dust and sand, reducing the direct and large-scale outward dispersion of dust and sand, which could pollute the laboratory environment or affect the health of experimental personnel and the normal operation of experimental instruments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an experimental device for simulating a combined rainfall-wind erosion-freeze-thaw erosion slope proposed in this invention; Figure 2 This is a schematic diagram of the main sectional view of the test device for simulating a combined rainfall-wind erosion-freeze-thaw erosion slope proposed in this invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of part A in the diagram.

[0015] In the diagram: 1. Experimental chamber; 101. High and low temperature integrated machine; 102. PLC controller; 103. Sand storage hopper; 104. Air blowing pipe; 105. Second solenoid valve; 106. Sand discharge pipe; 107. Rectangular shower head; 108. First solenoid valve; 109. Dust collection bag connecting pipe; 2. Soil carrier plate; 201. Groove; 3. Rotating shaft; 301. Support rod; 302. Lifting seat; 303. Diagonal connecting rod; 304. Rectangular perforation; 305. Electric telescopic rod; 306. External gear ring; 307. Gear; 308. Brake motor. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1 to 3 As shown, this embodiment proposes an experimental device for simulating a combined rainfall-wind erosion-freeze-thaw erosion slope, including an experimental chamber 1 and a door mounted on its front side via a hinge. A door lock is embedded on the front and rear right sides of the door, and the door lock is matched with a latch fixedly installed on the inner right wall of the experimental chamber 1. The device also includes: The soil carrier plate 2 is inclined and has a groove 201 at its bottom; The horizontal tilting and rotating support assembly is embedded in the bottom inner wall of the experimental chamber 1 and is rotatably connected to the front and rear inner walls of the groove 201; the horizontal tilting and rotating support assembly is used to allow personnel to flexibly tilt and rotate the soil carrier plate 2 according to the slope and inclination. The high and low temperature integrated machine 101 is set on the right side of the experimental chamber 1 and is connected and fixed to the top right side of the experimental chamber 1. The high and low temperature integrated machine 101 is used to allow personnel to simulate the experimental temperature as needed to heat or cool the inside of the experimental chamber 1 to assist in the freeze-thaw test of the slope soil. The PLC controller 102 is fixedly installed on the top right side of the experimental chamber 1; The water spraying assembly is embedded and fixed on the top of the experimental chamber 1, located above the soil carrier plate 2, and electrically connected to the PLC controller 102. The wind and sand erosion assembly is installed on the experimental chamber 1 and located on the upper right of the soil carrier plate 2, and is electrically connected to the PLC controller 102. The wind and sand erosion assembly is used to assist personnel in conducting wind and sand erosion experiments on the slope soil after being connected to an external air compressor or other air supply equipment and controlled by the PLC controller 102. The water spraying assembly is used to assist personnel in conducting water spraying experiments on the slope soil after being connected to an external water supply pipe and controlled by the PLC controller 102. In this embodiment, a dust collection bag connecting pipe 109 is fixedly connected to the bottom left side of the experimental chamber 1. The dust collection bag connecting pipe 109 has an external thread on its outer side and an internal threaded pipe cap is screwed on. The dust collection bag connecting pipe 109 is provided so that personnel can reverse and remove the internal threaded pipe cap to connect to an external industrial dust collection and ventilation bag. This allows for the filtration, interception, and collection of sand particles when the wind and sand are discharged during the wind and sand erosion experiment, preventing the direct and large-scale dispersion of dust and sand particles and pollution of the laboratory environment, thus forming a dust-free experimental operation. Support legs are fixedly connected to the four corners of the bottom of the experimental chamber 1.

[0018] Furthermore, such as Figure 1 , 2 As shown in Figure 3, the horizontal tilting rotary support assembly includes a rotating shaft 3 sealed and rotatably embedded in the bottom inner wall of the experimental chamber 1. A rectangular through hole 304 is provided at the bottom front side of the rotating shaft 3. A support rod 301 is fixedly connected to the top right side of the rotating shaft 3. The support rod 301 is rotatably installed between the front and rear inner walls of the groove 201. An inclined connecting rod 303 located on the left side of the support rod 301 is rotatably installed between the front and rear inner walls of the groove 201. A lifting seat 302 is rotatably installed at the bottom end of the inclined connecting rod 303. The rotating shaft 3 is slidably sleeved on the lifting seat 302. An electric telescopic rod 305 with its extended end fixedly connected to the bottom of the lifting seat 302 is fixedly installed on the left side of the bottom end of the rotating shaft 3. An external gear ring 306 is fixedly sleeved on the rotating shaft 3. A gear 307 meshes with the left side of the external gear ring 306. A brake motor 308 with its output shaft fixedly connected to the top of the gear 307 is fixedly installed on the bottom left side of the experimental chamber 1. In this embodiment, a stainless steel support shaft is fixedly connected between the front and rear inner walls of the groove 201. A circular through hole is opened at the top front side of the support rod 301, and two first bearings are fixedly fitted inside the circular through hole. The inner rings of the first bearings are fixedly fitted to the outer sides of the stainless steel support shaft, achieving the effect of rotating the support rod 301. A first circular hole is opened on the bottom inner wall of the experimental chamber 1, and three sealed bearings are fixedly fitted inside the first circular hole. The inner rings of the sealed bearings are fixedly fitted to the outer sides of the rotating shaft 3, achieving the effect of sealing and rotating the rotating shaft 3. The lifting seat 302... The top of the device has a rectangular groove with openings on both sides. Stainless steel pins are fixedly connected between the inner walls of the front and rear sides of the rectangular groove and between the inner walls of the front and rear sides of the groove. The top and bottom of the front side of the diagonal connecting rod 303 have second round holes. A second bearing is fixedly fitted in the second round hole. The inner ring of the second bearing is fixedly fitted with the outer side of the corresponding stainless steel pin, which serves to rotate the diagonal connecting rod 303. The top left side of the rotating shaft 3 has a rectangular guide hole that slides with the outer side of the lifting seat 302, which serves to guide the vertical sliding of the lifting seat 302. In this implementation scheme, the rotating shaft 3, rectangular through hole 304, support rod 301, inclined connecting rod 303, lifting seat 302, electric telescopic rod 305, external gear ring 306, gear 307, and brake motor 308 work together to drive the lifting seat 302 to move upward or downward using the electric telescopic rod 305. When the lifting seat 302 moves upward, it causes the inclined connecting rod 303 to compress and drive the soil carrier 2 to rotate upward. When the lifting seat 302 moves downward, it causes the inclined connecting rod 303 to pull and drive the soil carrier 2 to rotate downward, thus achieving the goal of driving the soil carrier 2 to rotate up and down. To change the tilt angle, when the inclination needs to be adjusted appropriately, the brake motor 308 drives the gear 307 to rotate. The gear 307 drives the rotating shaft 3 to rotate horizontally through the external gear ring 306. The rotating shaft 3 drives the soil carrier plate 2 to rotate horizontally through the support rod 301, the lifting seat 302 and the inclined connecting rod 303, so as to adjust the inclination of the tilted soil carrier plate 2 appropriately. This allows personnel to flexibly adjust the inclination of the soil carrier plate 2 according to the slope slope and inclination, so as to better simulate the slope slope and inclination for experimental work and improve the simulation effect.

[0019] Furthermore, such as Figure 1 and 2 As shown, the water spraying assembly includes a rectangular shower head 107 embedded and fixed on the top of the experimental chamber 1. The rectangular shower head 107 is located above the soil carrier plate 2. A first solenoid valve 108 is connected and fixed to the top of the rectangular shower head 107. An L-shaped water inlet pipe is connected and fixed to the top of the first solenoid valve 108. The first solenoid valve 108 is electrically connected to the PLC controller 102. In this embodiment, the top of the experimental chamber 1 is provided with a rectangular mounting hole that is fixedly connected to the outside of the rectangular shower head 107; In this implementation scheme, the rectangular shower head 107, the first solenoid valve 108, and the L-shaped water inlet pipe are used in conjunction to connect the L-shaped water inlet pipe to the external water supply pipeline. When a water spraying test is required, the personnel can preset the opening and closing interval of the first solenoid valve 108 through the PLC controller 102. The human-machine interface of the PLC controller 102 is operated to start the water spraying test, which controls the first solenoid valve 108 to open. Water is supplied into the rectangular shower head 107 through the L-shaped water inlet pipe and the first solenoid valve 108 in sequence, and then sprayed downwards onto the slope soil for the water spraying test. When the closing time is reached, the PLC controller 102 controls the first solenoid valve 108 to close, so as to achieve the effect of assisting personnel to automatically conduct water spraying tests on the slope soil at regular intervals.

[0020] Furthermore, such as Figure 1 and 2As shown, the wind and sand erosion assembly includes two second solenoid valves 105. The two second solenoid valves 105 are fixedly installed on the top and right side of the experimental chamber 1, respectively. The bottom end of the upper second solenoid valve 105 and the left end of the right second solenoid valve 105 both extend into the experimental chamber 1. The left end of the right second solenoid valve 105 is connected to and fixedly connected to an inclined air blowing pipe 104. The bottom end of the upper second solenoid valve 105 is connected to and fixedly connected to a sand discharge pipe 106. The sand discharge pipe 106 is located above the left end of the air blowing pipe 104. The top end of the upper second solenoid valve 105 is connected to and fixedly connected to a sand storage hopper 103. The right end of the right second solenoid valve 105 is connected to and fixedly connected to an air inlet connector. Both second solenoid valves 105 are electrically connected to a PLC controller 102. In this implementation scheme, the second solenoid valve 105, the air blowing pipe 104, the sand discharge pipe 106, the sand storage hopper 103, and the air inlet connector are used in conjunction to connect the air inlet connector to external air supply equipment such as an air compressor. When a sand erosion experiment is required, personnel use the PLC controller 102 to preset the opening and closing interval of the two second solenoid valves 105. By operating the human-machine interface of the PLC controller 102, the sand erosion experiment is started and run, which controls the opening of the two second solenoid valves 105, allowing fine sand to pass through the upper second solenoid valve. Solenoid valve 105 enters sand discharge pipe 106, and then flows out downward through the bottom of sand discharge pipe 106. Gas is supplied to air blowing pipe 104 through second solenoid valve 105 on the right, and then blown out to the left through air blowing pipe 104, blowing fine sand to the left and dispersing it to the slope soil. The wind force and fine sand generated by the blowing are used to conduct wind and sand erosion experiments on the slope soil. When the closing time is reached, PLC controller 102 controls the two second solenoid valves 105 to close, so as to achieve the effect of assisting personnel to conduct wind and sand erosion experiments on the slope soil at regular intervals.

[0021] It should be noted that the PLC controller 102 preferably adopts a Siemens S7-200SMART programmable controller with programmable time control function. By using the time control function of this programmable controller, the opening and closing time interval of the first solenoid valve 108 or the second solenoid valve 105 during operation can be set through programming, so as to assist personnel in performing the corresponding experimental work automatically according to the experimental time requirements; and realize the time control function of the corresponding steps. The above operations are all conventional applications of programmable controllers and are basic and well-known technical means of programmable controllers, which will not be described in detail here. The high and low temperature integrated unit 101 preferably adopts the Shanghai Lengbiao GDX-10 / 40+200 high and low temperature integrated unit. This high and low temperature integrated unit 101 can achieve precise temperature adjustment from -40℃ to +200℃, integrates temperature control and temperature measurement functions, is suitable for medium-sized laboratory temperature control chambers, and meets the needs of slope soil freeze-thaw experiments. Both the brake motor 308 and the electric telescopic rod 305 are equipped with control switches. The two control switches are preferably installed on the top of the experimental chamber 1 so that personnel can operate and control them centrally from above. In addition, the electrical connection between the first solenoid valve 108 and the second solenoid valve 105 and the PLC controller 102 is achieved through wires and relays. In terms of power supply, given that the slope soil test site is a laboratory or similar place, the on-site power supply conditions are sufficient and feasible. The electrical components of this device are connected to the on-site mains power and are connected to the equipment through conventional power distribution devices such as circuit breakers, contactors, and power modules, as well as flexible wires (not marked in the figure), to form a complete power supply circuit. This power supply scheme is a conventional power distribution method for industrial equipment and is a mature and well-known technical means, which will not be described in detail here.

[0022] The usage method of this embodiment is as follows: When using the test device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes, the collected whole piece of slope soil is placed in the soil carrier plate 2. When it is necessary to adjust the soil carrier plate 2 to simulate the actual measured slope soil condition, the personnel activate the electric telescopic rod 305 to drive the lifting seat 302 to move upward or downward. When the lifting seat 302 moves upward, it drives the inclined connecting rod 303 to squeeze and drive the soil carrier plate 2 to rotate upward. When the lifting seat 302 moves downward, it drives the soil carrier plate 2 to rotate downward through the inclined connecting rod 303. This achieves the effect of driving the soil carrier plate 2 to rotate up and down to change the tilt angle. Further appropriate adjustments to the tilt angle are required. When the personnel start the brake motor 308, it drives the gear 307 to rotate. The gear 307 drives the rotating shaft 3 to rotate horizontally through the external gear ring 306. The rotating shaft 3 drives the soil carrier plate 2 to rotate horizontally through the support rod 301, the lifting seat 302 and the inclined connecting rod 303. The tilt of the inclined soil carrier plate 2 is adjusted appropriately, so that the personnel can flexibly adjust the tilt of the soil carrier plate 2 according to the slope slope and tilt, so as to better simulate the actual slope slope and tilt state for experimental work, avoid the phenomenon of large experimental deviation due to excessive deviation from the slope state, facilitate the adaptation to different types of slope soil experiments, and improve the simulation effect, applicability and flexibility. During the experiment, the internal threaded cap on the dust collection bag connecting pipe 109 is reversed and removed. It is then connected to an external industrial dust collection and ventilation bag using cable ties or similar tools. Personnel operate the high and low temperature integrated machine 101 to heat or cool the experimental chamber 1 according to the freeze-thaw experiment requirements, assisting in the slope soil freeze-thaw experiment. The air inlet connector is connected to an external air compressor or other air supply equipment. When a wind and sand erosion experiment is required, personnel preset the opening and closing interval of the two second solenoid valves 105 through the PLC controller 102. Operating the human-machine interface of the PLC controller 102 initiates the wind and sand erosion experiment, controlling the opening of the two second solenoid valves 105. Fine sand enters the sand discharge pipe 106 through the upper second solenoid valve 105 and flows downwards through the bottom of the sand discharge pipe 106. Gas flows through the right side... The second solenoid valve 105 supplies air to the blowing pipe 104, and then blows the fine sand to the left through the blowing pipe 104, dispersing it to the slope soil. The wind force and fine sand generated by the blowing are used to conduct a wind and sand erosion experiment on the slope soil. When the closing time is reached, the PLC controller 102 controls the two second solenoid valves 105 to close, so as to achieve the effect of assisting personnel to conduct wind and sand erosion experiments on the slope soil at regular intervals. The wind and sand generated during the wind and sand erosion experiment enter the external industrial dust collection and breathable filter bag through the dust collection bag connecting pipe 109. The gas permeates outward, and the dust and sand are filtered, intercepted, and collected in the industrial dust collection and breathable filter bag, so as to achieve the effect of assisting personnel to filter and collect the dust and sand in a concentrated manner, reducing the phenomenon of dust and sand directly drifting outward in large quantities, polluting the laboratory environment, or affecting the health of experimental personnel and the normal operation of experimental instruments. When the L-shaped water inlet pipe is connected to the external water supply pipe, and a water spraying test is required, the personnel can preset the opening and closing interval of the first solenoid valve 108 through the PLC controller 102. The human-machine interface of the PLC controller 102 is operated to start the water spraying test, which controls the first solenoid valve 108 to open. Water is supplied into the rectangular shower head 107 through the L-shaped water inlet pipe and the first solenoid valve 108 in sequence, and then sprayed downwards onto the slope soil for the water spraying test. When the closing time is reached, the PLC controller 102 controls the first solenoid valve 108 to close, so as to achieve the effect of assisting personnel to automatically conduct water spraying tests on the slope soil at regular intervals.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A test device for simulating a combined erosion slope of rainfall-wind erosion-freeze-thaw, comprising an experimental chamber (1) and a door mounted on its front side by a hinge, wherein a door lock is embedded on the right side of the front and rear sides of the door, and the door lock is matched with a latch fixedly mounted on the inner wall of the right side of the experimental chamber (1), characterized in that: Also includes: The soil carrier plate (2) is inclined and has a groove (201) at its bottom. The horizontal tilting rotary support assembly is embedded in the bottom inner wall of the experimental box (1) and is rotatably connected to the front and rear inner walls of the groove (201); The high and low temperature integrated machine (101) is set on the right side of the experimental chamber (1) and is connected and fixed to the top right side of the experimental chamber (1); The PLC controller (102) is fixedly installed on the top right side of the experimental chamber (1); The water spraying assembly is embedded and fixed on the top of the experimental chamber (1) and located above the soil carrier plate (2), and is electrically connected to the PLC controller (102); The wind and sand erosion component is installed on the experimental chamber (1) and located to the upper right of the soil carrier plate (2), and is electrically connected to the PLC controller (102).

2. The experimental device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes according to claim 1, characterized in that: The horizontal tilting and rotating support assembly includes a rotating shaft (3) that is sealed and rotatably embedded in the bottom inner wall of the experimental chamber (1). A rectangular through hole (304) is provided on the bottom front side of the rotating shaft (3). A support rod (301) is fixedly connected to the top right side of the rotating shaft (3). The support rod (301) is rotatably installed between the front and rear inner walls of the groove (201). A diagonal connecting rod (303) located on the left side of the support rod (301) is rotatably installed between the front and rear inner walls of the groove (201). A lifting seat (302) is rotatably installed at the bottom end. The rotating shaft (3) is slidably sleeved on the lifting seat (302). An electric telescopic rod (305) with its extended end fixedly connected to the bottom of the lifting seat (302) is fixedly installed on the left side of the bottom end of the rotating shaft (3). An external gear ring (306) is fixedly sleeved on the rotating shaft (3). A gear (307) meshes on the left side of the external gear ring (306). A brake motor (308) with its output shaft fixedly connected to the top of the gear (307) is fixedly installed on the left side of the bottom of the experimental box (1).

3. The experimental device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes according to claim 1, characterized in that: The water spraying assembly includes a rectangular shower head (107) embedded and fixed on the top of the experimental chamber (1). The rectangular shower head (107) is located above the soil carrier plate (2). A first solenoid valve (108) is connected and fixed to the top of the rectangular shower head (107). An L-shaped water inlet pipe is connected and fixed to the top of the first solenoid valve (108). The first solenoid valve (108) is electrically connected to the PLC controller (102).

4. The experimental device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes according to claim 1, characterized in that: The wind and sand erosion assembly includes two second solenoid valves (105). The two second solenoid valves (105) are fixedly installed on the top and right side of the experimental chamber (1), respectively. The bottom end of the upper second solenoid valve (105) and the left end of the right second solenoid valve (105) extend into the experimental chamber (1). The left end of the right second solenoid valve (105) is connected to a tilted air blowing pipe (104). The bottom end of the upper second solenoid valve (105) is connected to a sand discharge pipe (106). The sand discharge pipe (106) is located above the left end of the air blowing pipe (104). The top end of the upper second solenoid valve (105) is connected to a sand storage hopper (103). The right end of the right second solenoid valve (105) is connected to an air inlet connector. Both second solenoid valves (105) are electrically connected to the PLC controller (102).

5. The experimental device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes according to claim 1, characterized in that: The bottom left side of the experimental chamber (1) is connected to a dust collection bag connecting pipe (109), and the dust collection bag connecting pipe (109) has an external thread and an internal threaded pipe cap screwed on its outer side.

6. The experimental device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes according to claim 1, characterized in that: The experimental chamber (1) has four fixed support legs at the bottom corners.

7. The experimental device for simulating combined rainfall-wind erosion-freeze-thaw erosion slopes according to claim 2, characterized in that: A stainless steel support shaft is fixedly connected between the front and rear inner walls of the groove (201). A circular through hole is opened on the top front side of the support rod (301). Two first bearings are fixedly sleeved in the circular through hole. The inner ring of the first bearing is fixedly sleeved with the outer side of the stainless steel support shaft.

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