Simulation experiment device for slope instability mechanism under coupling action of earthquake and rainfall

Abstract

The embodiment of the invention provides a slope instability mechanism simulation experiment device under the earthquake and rainfall coupling effect, and relates to the technical field of earthquake simulation equipment. The slope instability mechanism simulation experiment device under the earthquake and rainfall coupling effect comprises a model storage mechanism, a driving transmission mechanism and an adjusting mechanism, the driving transmission mechanism is located at the lower end of the model storage mechanism and enables a model in the model storage mechanism to vibrate, and the adjusting mechanism is located at the lower end of the model storage mechanism and enables the model in the model storage mechanism to vibrate. The adjusting mechanism is located at the lower end of the model storage mechanism and located in the middle of the transmission mechanism, and the transmission mechanism moves upwards and drives the adjusting mechanism to rotate. According to the device, the matching position and state of the cam and the vibration convex plate can be accurately changed, so that the vibration amplitudes of the slope toe, the slope top and the two sides of the slope body of an experimental model are accurately adjusted, the requirements for slope vibration amplitude simulation under different experimental conditions are met, and the influence of the vibration amplitudes on a slope instability mechanism can be deeply researched.

Description

Technical Field

[0001] The present application relates to the technical field of earthquake simulation equipment, and in particular to an experimental device for simulating the instability mechanism of a slope under the coupling effect of earthquake and rainfall. Background Art

[0002] Earthquakes and rainfall are two key factors that lead to slope instability. The strong vibrations caused by earthquakes will destroy the internal structure of the slope soil and reduce the shear strength of the soil, while rainfall will increase the water content of the soil and the pore water pressure, further weakening the stability of the soil. The slope instability mechanism under the coupling of the two is extremely complex and is the focus and difficulty of geotechnical engineering disaster prevention and mitigation research. For this reason, the use of slope instability mechanism simulation experimental equipment can help staff analyze the response differences of different geological conditions, slope gradients, soil types and other factors under coupling, thereby establishing a more complete slope instability prediction model and evaluation system.

[0003] However, most of the existing slope instability mechanism simulation experimental devices find it difficult to separately adjust the vibration parameters and rainfall intensity of the slope foot, slope top and both sides of the slope of the experimental model, and it is also difficult to achieve accurate parameter settings for multiple positions of the model, making it impossible to effectively simulate the different instability parameter changes that may occur in different parts of the slope due to many factors such as terrain undulations and differences in vegetation distribution under rainfall conditions, thereby reducing the accuracy of the experimental simulation. At the same time, it is difficult to accurately set different vibration frequencies, amplitudes and other parameters for the slope foot, slope top and both sides of the slope, resulting in difficulty in simulating the complex differences in force and response of various parts of the actual slope during the propagation of seismic waves, further reducing the accuracy of the experiment. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a simulation experimental device for the instability mechanism of slopes under the coupling of earthquakes and rainfall, which can accurately change the matching position and state of the cam and the vibration convex plate, thereby realizing the precise adjustment of the vibration amplitude of the slope foot, slope top and both sides of the slope of the experimental model, meeting the requirements for simulating the vibration amplitude of the slope under different experimental conditions, and contributing to in-depth research on the influence of the vibration amplitude on the instability mechanism of the slope. By flexibly controlling the rotation cycle of multiple unidirectional long screws, the unidirectional long screws drive the movement of the corresponding circular unidirectional sliders, L-shaped plates and water control plates, which can effectively adjust the opening degree of the water holes, and then flexibly control the spraying intensity of the single first spray plate and the single second spray plate, so that the instability of the slopes at different positions and different rainfall intensities can be simulated during the experiment.

[0005] The experimental device for simulating the instability mechanism of slopes under the coupled effects of earthquake and rainfall according to the embodiment of the present application comprises: Model storage organization; A driving transmission mechanism, wherein the transmission mechanism is located at the lower end of the model storage mechanism, and the transmission mechanism causes the model in the model storage mechanism to vibrate; An adjusting mechanism, the adjusting mechanism is located at the lower end of the model storage mechanism, the adjusting mechanism is located in the middle of the transmission mechanism, the transmission mechanism moves upward and drives the adjusting mechanism to rotate, and the adjusting mechanism can control the vibration amplitude of one side of the model and the spraying amount of water; The spray mechanism is located at the upper end of the model storage mechanism, and the adjustment mechanism controls the spray flow rate of the spray mechanism during rotation.

[0006] According to some embodiments of the present application, the model storage mechanism includes a base plate, the four corners of the upper surface of the base plate are fixedly connected to support legs, the upper surface of the support legs is fixedly connected to a connecting frame, the inner wall of the connecting frame is fixedly connected to a connecting cover, the four corners of the inner bottom surface of the connecting cover are hingedly connected to vibration springs, the upper ends of the vibration springs are hingedly connected to a vibration plate, and the upper surface of the vibration plate is provided with an experimental model.

[0007] According to some embodiments of the present application, drain valve pipes are connected through both sides of the front end and the rear end of the lower part of the connection cover.

[0008] According to some embodiments of the present application, the transmission mechanism includes a servo motor, a lifting cylinder and a transmission frame, the servo motor is fixedly connected to the middle part of the upper surface of the base plate, the output end of the servo motor is fixedly connected to a long rotating rod, the outer wall of the long rotating rod close to the upper part is fixedly connected to a plurality of long clamping strips, the upper end of the long rotating rod extends to the interior of the connecting cover and is fixedly connected to the bevel gear, the middle parts of the inner walls at the front end and the rear end of the connecting cover are respectively rotatably connected to the middle rotating rod, the middle parts of the inner walls on both sides of the connecting cover are respectively rotatably connected to the short rotating rod, the outer walls of the middle rotating rod and the short rotating rod away from one end of the bevel gear are fixedly connected to a plurality of short clamping strips, the outer walls of the short clamping strips are slidably connected to a clamping sleeve, the outer wall of the clamping sleeve close to one end of the bevel gear is fixedly connected to a cam, the lower surface of the vibration plate is fixedly connected to a plurality of vibration convex plates, and the cam cooperates with the vibration convex plate during rotation, the outer walls of the middle rotating rod and the short rotating rod close to one end of the bevel gear are fixedly connected to the first bevel gear, and the first bevel gear is meshed with the bevel gear; The cam is connected with the water pump, and the water outlet is fixedly connected with the second water pump through the bottom end of the water pump, and the water outlet is fixedly connected with the second water pump through the bottom end of the water pump. The upper surface of the transmission frame is fixedly connected to the middle part of the lower surface of the connecting cover, the inner wall of the transmission frame is fixedly connected with a plurality of assembly rings, the inner walls of the assembly rings are fixedly connected with bearing rings, the inner walls of the bearing rings are fixedly connected with inner gear rings, and the intermediate gears are respectively meshed with the plurality of inner gear rings.

[0009] According to some embodiments of the present application, during the rotation of the transfer rod, the short clip strip drives the clip sleeve and the cam to rotate. According to some embodiments of the present application, a water storage box is fixedly connected to the middle part of the front end of the upper surface of the base plate, and a first connecting pipe is fixedly connected to the water suction port of the first water pump, and the front end of the first connecting pipe is through-connected to the lower end of one side of the water storage box.

[0010] According to some embodiments of the present application, the adjusting mechanism includes a first one-way long screw, a second one-way long screw, a third one-way long screw and a fourth one-way long screw, the first one-way long screw is rotatably connected to the rear end of the upper surface of the base plate, the third one-way long screw is rotatably connected to the front end of the upper surface of the base plate, the second one-way long screw and the fourth one-way long screw are rotatably connected to both sides of the upper surface of the base plate, the lifting cylinder is located at the lower ends of the first one-way long screw, the second one-way long screw, the third one-way long screw and the fourth one-way long screw, the outer wall in the middle of the first one-way long screw is fixedly connected to the first driven gear, the outer wall near the middle of the second one-way long screw is fixedly connected to the second driven gear, the outer wall near the upper part of the third one-way long screw is fixedly connected to the third driven gear, and the outer wall at the upper part of the fourth one-way long screw is fixedly connected to the fourth driven gear, and the first driven gear, the second driven gear, the third driven gear and the fourth driven gear are respectively meshed with the inner gear ring; The upper ends of the first unidirectional long screw, the second unidirectional long screw, the third unidirectional long screw and the fourth unidirectional long screw extend to the interior of the connecting cover and are fixedly connected to the second bevel gear. The inner wall of the lower end of the connecting cover is rotatably connected to a plurality of unidirectional short screws. The end of the unidirectional short screw close to the middle of the connecting cover is fixedly connected to the third bevel gear. The second bevel gear and the third bevel gear are meshed with each other. The end of the unidirectional short screw body close to the connecting cover is sleeved with a circular unidirectional slider. The upper end of the circular unidirectional slider is fixedly connected to a positioning sleeve. The inner wall of the positioning sleeve is rotatably connected to the outer wall of the clamping sleeve.

[0011] According to some embodiments of the present application, the first driven gear is located at a lower end of the second driven gear, the second driven gear is located at a lower end of the third driven gear, and the third driven gear is located at a lower end of the fourth driven gear.

[0012] According to some embodiments of the present application, the spray mechanism includes a second water pump and an assembly frame, the second water pump is fixedly connected to the other side of the rear end of the upper surface of the bottom plate, the water suction port of the second water pump is fixedly connected to a third connecting pipe, the end of the third connecting pipe away from the second water pump is through-connected to the lower end of the lifting cylinder, the pipe body of the third connecting pipe is provided with an electromagnetic control valve, the middle part of the upper end of the bottom plate is fixedly connected to an annular water pipe, the water outlet of the second water pump is fixedly connected to a fourth connecting pipe, and the lower end of the fourth connecting pipe is through-connected to the annular water pipe; The lower ends of the first one-way long screw, the second one-way long screw, the third one-way long screw and the fourth one-way long screw are respectively sleeved with rectangular one-way sliding blocks, the outer walls of the rectangular one-way sliding blocks close to the middle of the bottom plate are fixedly connected to the L-shaped plate, the middle part of the upper surface of the bottom plate is fixedly connected to a plurality of water volume control boxes, the middle part of the water volume control box is slidably connected to the water volume control board, the board body of the water volume control board is provided with a plurality of water through holes, the upper end of the water volume control board extends to the outside of the water volume control box, the upper surface of the water volume control board is fixedly connected to the lower surface of the L-shaped plate, the end of the water volume control box away from the middle of the bottom plate is provided with a water inlet cavity, the end of the water volume control box close to the middle of the bottom plate is provided with a drainage cavity, and the pipe body of the annular water pipe is provided with a plurality of fifth connecting pipes, and the fifth connecting pipes are all through and extend to the inside of the water inlet cavity; The assembly frame is fixedly connected to the upper surface of the connecting cover, and the two sides of the middle of the assembly frame are respectively fixedly connected with the first spray plate, and the front end and the rear end of the assembly frame are respectively fixedly connected with the second spray plate, and the lower ends of the water volume control boxes on both sides are through-connected with the first liquid transfer tube, and the lower ends of the first liquid transfer tube extend to the inside of the drainage cavity on both sides respectively, and the upper ends of the first liquid transfer tube are respectively through-connected with the first spray plate, and the lower ends of the water volume control boxes at the front and rear ends are respectively through-connected with the second liquid transfer tube, and the lower ends of the second liquid transfer tube extend to the inside of the drainage cavity at the front and rear ends respectively, and the upper ends of the second liquid transfer tube are respectively through-connected with the second spray plate.

[0013] According to some embodiments of the present application, the lower ends of the first spray plate and the second spray plate are both connected with a plurality of spray nozzles.

[0014] The beneficial effects of the present application are as follows: when in use, the power source of the transmission mechanism drives the transmission components to operate, causing the model in the model storage mechanism to vibrate. The adjustment mechanism is located at the lower end of the model storage mechanism and in the middle of the transmission mechanism. When the transmission mechanism moves upward, the adjustment mechanism is driven to rotate. The adjustment mechanism can change the vibration amplitude of multiple single sides of the model on the one hand, and can control the spray flow rate of a single area of ​​the spray mechanism on the other hand, so that the entire device can comprehensively simulate the influence of different earthquake intensities and rainfall intensities on the model, and provide an effective means for studying the instability mechanism of the slope under the coupling of earthquake and rainfall. Among them, water is supplied to the inside of the lifting cylinder by the first water pump, and the servo motor is started. First, the matching position and state of the cam and the vibration convex plate can be accurately changed, thereby realizing the precise adjustment of the vibration amplitude of the slope foot, slope top and both sides of the slope of the experimental model, meeting the requirements for slope vibration amplitude simulation under different experimental conditions, and contributing to in-depth research on the influence of vibration amplitude on the slope instability mechanism. Second, by flexibly controlling multiple unidirectional long screws The rotation cycle of the unidirectional long screw drives the movement of the corresponding circular unidirectional slider, L-shaped plate and water control plate, which can effectively adjust the opening degree of the water hole, and then flexibly control the spraying intensity of the single first spray plate and the single second spray plate. This makes it possible to simulate the instability of the slope under different positions and different rainfall intensities during the experiment. Thirdly, it can simultaneously realize the simulation of seismic vibration and rainfall spraying, and can independently and accurately adjust the vibration amplitude and spraying intensity respectively, so as to simulate the slope instability process under various coupling conditions of earthquake and rainfall, and more comprehensively reflect the comprehensive effect of complex environmental factors on slope stability in actual geological disasters, which greatly improves the authenticity and effectiveness of the experiment. Fourthly, under the same initial experimental simulation conditions, the experiment can be repeated many times according to the set vibration amplitude and spraying intensity parameters, and the characteristics and laws of slope instability under different parameter combinations can be easily compared, which is conducive to scientific researchers to obtain more accurate and reliable experimental data.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of a simulation experimental device for the slope instability mechanism under the coupling effect of earthquake and rainfall according to an embodiment of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of the transmission mechanism, the adjustment mechanism and the spray mechanism according to the embodiment of the present application; Figure 3 is a first view of a model storage mechanism according to an embodiment of the present application; Figure 4 is a second view of the model storage mechanism according to an embodiment of the present application; Figure 5 is an assembly diagram of a model storage mechanism and a transmission mechanism according to an embodiment of the present application; Figure 6 is a schematic diagram of a three-dimensional structure of a transmission mechanism according to an embodiment of the present application; Figure 7 is a partial assembly diagram of a transmission mechanism according to an embodiment of the present application; Figure 8 is a first view of a transmission mechanism and an adjustment mechanism according to an embodiment of the present application; Fig. 9 is a cross-sectional view of a lifting cylinder according to an embodiment of the present application; Fig.10 is a second view of the transmission mechanism and the adjustment mechanism according to the embodiment of the present application; Fig.11 is a schematic diagram of the three-dimensional structure of the adjustment mechanism according to an embodiment of the present application; Fig.12 is a first view of a spray mechanism according to an embodiment of the present application; Fig.13 is a second view of the spray mechanism according to an embodiment of the present application; Fig.14 It is a cross-sectional view of a water volume control box according to an embodiment of the present application.

[0018] Icons: 1. Model storage mechanism; 101. Bottom plate; 102. Support legs; 103. Connecting frame; 104. Connecting cover; 105. Vibration spring; 106. Vibration plate; 107. Experimental model; 108. Drain valve pipe; 2. Transmission mechanism; 201. Servo motor; 202. Long rotating rod; 203. Long clamping strip; 204. Bevel gear; 205. Transfer rod; 206. Short rotating rod; 207. Short clamping strip; 208. Card sleeve; 209. Cam; 210. Vibration convex plate; 211, first water pump; 212, first connecting pipe; 213, second connecting pipe; 214, water storage box; 215, lifting cylinder; 216, sealing slide plate; 217, pressing spring; 218, support rod; 219, assembly plate; 220, first transmission wheel; 221, second transmission wheel; 222, intermediate gear; 223, toothed belt; 224, transmission frame; 225, assembly ring; 226, bearing ring; 227, inner gear ring; 228, first bevel gear; 3, regulating machine Structure; 301, first one-way long screw; 302, second one-way long screw; 303, third one-way long screw; 304, fourth one-way long screw; 305, first driven gear; 306, second driven gear; 307, third driven gear; 308, fourth driven gear; 309, second bevel gear; 310, one-way short screw; 311, third bevel gear; 312, round one-way slider; 313, positioning sleeve; 4, spray mechanism; 401, second water pump; 402 , the third connecting pipe; 403, the electromagnetic control valve; 404, the annular water pipe; 405, the fourth connecting pipe; 406, the rectangular one-way slider; 407, the L-shaped plate; 408, the water volume control box; 409, the fifth connecting pipe; 410, the water volume control board; 411, the water hole; 412, the water inlet chamber; 413, the drainage chamber; 414, the assembly frame; 415, the first spray plate; 416, the second spray plate; 417, the first liquid transfer tube; 418, the second liquid transfer tube; 419, the spray nozzle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0020] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] 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, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] The following describes, with reference to the accompanying drawings, a simulation experimental device for the slope instability mechanism under the coupled effects of earthquake and rainfall according to an embodiment of the present application.

[0028] like Figure 1-Figure 14 As shown, the experimental device for simulating the slope instability mechanism under the coupled effects of earthquake and rainfall according to the embodiment of the present application includes: a model storage mechanism 1, a drive transmission mechanism 2, an adjustment mechanism 3 and a spray mechanism 4.

[0029] like Figure 1 and Figure 2 As shown, the model storage mechanism 1 drives the transmission mechanism 2, the transmission mechanism 2 is located at the lower end of the model storage mechanism 1, the transmission mechanism 2 makes the model in the model storage mechanism 1 vibrate, the adjustment mechanism 3, the adjustment mechanism 3 is located at the lower end of the model storage mechanism 1, the adjustment mechanism 3 is located in the middle of the transmission mechanism 2, the transmission mechanism 2 moves upward and drives the adjustment mechanism 3 to rotate, the adjustment mechanism 3 can control the vibration amplitude of one side of the model and the water spraying amount, the spraying mechanism 4, the spraying mechanism 4 is located at the upper end of the model storage mechanism 1, and the adjustment mechanism 3 controls the spraying flow rate of the spraying mechanism 4 during its rotation.

[0030] When in use, the power source of the transmission mechanism 2 drives the transmission components to operate, causing the model in the model storage mechanism 1 to vibrate. The adjustment mechanism 3 is located at the lower end of the model storage mechanism 1 and in the middle of the transmission mechanism 2. When the transmission mechanism 2 moves upward, the adjustment mechanism 3 is driven to rotate. On the one hand, the adjustment mechanism 3 can change the vibration amplitude of multiple single sides of the model, and on the other hand, it can control the spray flow rate of a single area of ​​the spray mechanism 4, so that the entire device can comprehensively simulate the impact of different earthquake intensities and rainfall intensities on the model, providing an effective means for studying the slope instability mechanism under the coupling of earthquake and rainfall.

[0031] like Figure 3 and Figure 4As shown, the model storage mechanism 1 includes a base plate 101, the four corners of the upper surface of the base plate 101 are fixedly connected with support legs 102, the upper surface of the support legs 102 is fixedly connected with a connecting frame 103, the inner wall of the connecting frame 103 is fixedly connected with a connecting cover 104, the four corners of the inner bottom surface of the connecting cover 104 are hingedly connected with vibration springs 105, the upper ends of the vibration springs 105 are hingedly connected with vibration plates 106, the upper surface of the vibration plate 106 is provided with an experimental model 107, and the front and rear ends of the lower part of the connecting cover 104 are connected with drain valve pipes 108 on both sides.

[0032] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9The transmission mechanism 2 includes a servo motor 201, a lifting cylinder 215 and a transmission frame 224. The servo motor 201 is fixedly connected to the middle part of the upper surface of the base plate 101. The output end of the servo motor 201 is fixedly connected to a long rotating rod 202. The outer wall of the long rotating rod 202 close to the upper part is fixedly connected to a plurality of long clamping strips 203. The upper end of the long rotating rod 202 extends to the inside of the connecting cover 104 and is fixedly connected to a bevel gear 204. The middle parts of the inner walls at the front and rear ends of the connecting cover 104 are respectively rotatably connected to a middle rotating rod 205. The middle parts of the inner walls on both sides of the connecting cover 104 are respectively rotatably connected to short rotating rods 206. The outer walls of the middle rotating rod 205 and the short rotating rod 206 away from the bevel gear 204 are fixedly connected to a plurality of short clamping strips 207. The outer walls of the short clamping strips 207 They are all slidably connected with a sleeve 208, and the outer wall of the sleeve 208 near the end of the bevel gear 204 is fixedly connected with a cam 209, and the lower surface of the vibration plate 106 is fixedly connected with a plurality of vibration convex plates 210, and the cam 209 cooperates with the vibration convex plates 210 during the rotation process, and the outer walls of the intermediate transfer rod 205 and the short transfer rod 206 near the end of the bevel gear 204 are fixedly connected with a first bevel gear 228, and the first bevel gear 228 is meshed with the bevel gear 204, and one side of the upper surface of the rear end of the bottom plate 101 is fixedly connected with a first water pump 211, and a lifting cylinder 215 is fixedly connected to the middle part of the upper surface of the bottom plate 101, and the water outlet of the first water pump 211 is fixedly connected with a second connecting pipe 213, and the end of the second connecting pipe 213 away from the first water pump 211 is connected to One side of the lower end of the lifting cylinder 215 is connected through, and the lower end of the lifting cylinder 215 is slidably connected to a sealing slide plate 216 inside, and a plurality of downward pressure springs 217 are fixedly connected to the edge of the top of the lifting cylinder 215. The lower surface of the downward pressure spring 217 is fixedly connected to the upper surface of the sealing slide plate 216, and the middle part of the upper surface of the sealing slide plate 216 is fixedly connected to a support rod 218. The upper end of the support rod 218 extends to the upper part of the lifting cylinder 215 and is fixedly connected to an assembly plate 219. The front end of the assembly plate 219 is sleeved on the outer wall of the long rotating rod 202, and the front end of the upper surface of the assembly plate 219 is rotatably connected to a first transmission wheel 220. During the upward movement of the first transmission wheel 220, it is slidably connected to the outer wall of the long clip 203, and the rear end of the upper surface of the assembly plate 219 is rotated. The first transmission wheel 220 and the second transmission wheel 221 are dynamically connected to the second transmission wheel 221. The outer walls of the first transmission wheel 220 and the second transmission wheel 221 are sleeved with a toothed belt 223. The upper surface of the second transmission wheel 221 is fixedly connected with an intermediate gear 222. The upper surface of the transmission frame 224 is fixedly connected to the middle part of the lower surface of the connection cover 104. The inner wall of the transmission frame 224 is fixedly connected with a plurality of assembly rings 225. The inner walls of the assembly rings 225 are fixedly connected with bearing rings 226. The inner walls of the bearing rings 226 are fixedly connected with inner gear rings 227. The intermediate gear 222 is respectively meshed with the plurality of inner gear rings 227. During the rotation of the transfer rod 205, the short clamping strip 207 drives the clamping sleeve 208 and the cam 209 to rotate. The middle part of the front end of the upper surface of the bottom plate 101 is fixedly connected with a water storage box 214.The water inlet of the first water pump 211 is fixedly connected with a first connecting pipe 212, and the front end of the first connecting pipe 212 is connected to the lower end of one side of the water storage box 214.

[0033] like Fig.10 and Fig.1110. The adjusting mechanism 3 includes a first one-way long screw 301, a second one-way long screw 302, a third one-way long screw 303 and a fourth one-way long screw 304. The first one-way long screw 301 is rotatably connected to the rear end of the upper surface of the bottom plate 101, the third one-way long screw 303 is rotatably connected to the front end of the upper surface of the bottom plate 101, the second one-way long screw 302 and the fourth one-way long screw 304 are rotatably connected to both sides of the upper surface of the bottom plate 101 respectively, the lifting cylinder 215 is located at the lower ends of the first one-way long screw 301, the second one-way long screw 302, the third one-way long screw 303 and the fourth one-way long screw 304, the outer wall in the middle of the first one-way long screw 301 is fixedly connected to the first driven gear 305, the second one-way long screw 302 is near the middle The outer wall is fixedly connected to a second driven gear 306, the outer wall of the third one-way long screw 303 near the upper part is fixedly connected to a third driven gear 307, the outer wall of the upper part of the fourth one-way long screw 304 is fixedly connected to a fourth driven gear 308, the first driven gear 305, the second driven gear 306, the third driven gear 307 and the fourth driven gear 308 are respectively meshed with the inner gear ring 227, the upper ends of the first one-way long screw 301, the second one-way long screw 302, the third one-way long screw 303 and the fourth one-way long screw 304 are all extended to the interior of the connecting cover 104 and are fixedly connected to a second bevel gear 309, the inner wall of the lower end of the connecting cover 104 is rotatably connected to a plurality of one-way short screws 310, and the one-way short screws 310 are close to the connecting cover 1 04, one end of the middle part is fixedly connected with the third bevel gear 311, the second bevel gear 309 is meshed with the third bevel gear 311, the one end of the one-way short screw 310 near the connecting cover 104 is sleeved with a circular one-way slider 312, the upper end of the circular one-way slider 312 is fixedly connected with a positioning sleeve 313, the inner wall of the positioning sleeve 313 is rotatably connected to the outer wall of the sleeve 208, the first driven gear 305 is located at the lower end of the second driven gear 306, the second driven gear 306 is located at the lower end of the third driven gear 307, and the third driven gear 307 is located at the lower end of the fourth driven gear 308. Specifically, during the simulation experiment, when it is necessary to increase the vibration amplitude and spray intensity of the slope foot of the experimental model 107, start the first water pump 211 And close the electromagnetic control valve 403, at this time, the first water pump 211 will pump water into the interior of the lifting cylinder 215 through the second connecting pipe 213, at this time the water inside the lifting cylinder 215 pushes the sealing slide plate 216 to move upward, driving the support rod 218, the assembly plate 219 and the first transmission wheel 220, the second transmission wheel 221, the toothed belt 223 and the intermediate gear 222 to move upward, at this time the first transmission wheel 220 slides on the outer wall of the long card strip 203, and the intermediate gear 222 meshes with the inner gear ring 227 in turn during the rising process, when the intermediate gear 222 moves upward to the horizontal position of the third driven gear 307, the first water pump 211 stops pumping water, at this time the intermediate gear 222 will mesh with the third inner gear ring 227 from bottom to top,At this time, the servo motor 201 is started to make the long rotating rod 202 start to rotate. At this time, the first transmission wheel 220 can be rotated under the action of the long clamping strip 203, and the second transmission wheel 221 and the intermediate gear 222 are driven to rotate under the action of the toothed belt 223. At this time, the inner gear ring 227 at the corresponding position will rotate synchronously, thereby driving the third unidirectional long screw 303 to rotate. At this time, the third unidirectional long screw 303 will drive the second bevel gear 309 to rotate, and then through the meshing transmission with the third bevel gear 311, the unidirectional short screw 310 is rotated. At this time, the circular unidirectional slider 312 will drive the positioning sleeve 313 and the clamping sleeve 208 to slide on the outer wall of the short clamping strip 207. At this time, the cam 209 and the vibration The mating position of the convex plate 210 also changes. The shape of the vibration convex plate 210 is that the end close to the middle of the connection cover 104 is small, and the end away from the middle of the connection cover 104 is large. Then, when the cam 209 moves in the direction away from the middle of the connection cover 104, the contact area between the cam 209 and the vibration convex plate 210 increases. At the same time, when the servo motor 201 drives the long rotating rod 202 to rotate, the bevel gear 204 will mesh with the first bevel gear 228 and the middle rotating rod 205 and the short rotating rod 206 will respectively drive the short clip 207 to rotate. At this time, the short clip 207 in the rotation process will drive the cam 209 whose position has been adjusted to rotate, and the purpose of adjusting the amplitude of the slope foot is achieved.

[0034] like Fig.12 , Fig.13 and Fig.144. The spray mechanism 4 includes a second water pump 401 and an assembly frame 414. The second water pump 401 is fixedly connected to the other side of the rear end of the upper surface of the bottom plate 101. The water suction port of the second water pump 401 is fixedly connected to the third connecting pipe 402. One end of the third connecting pipe 402 away from the second water pump 401 is connected to the lower end of the lifting cylinder 215. The pipe body of the third connecting pipe 402 is provided with an electromagnetic control valve 403. The middle part of the upper end of the bottom plate 101 is fixedly connected to an annular water pipe 404. The water outlet of the second water pump 401 is fixedly connected to the fourth connecting pipe 405. The lower end of the fourth connecting pipe 405 is connected to the annular water pipe 404. The first unidirectional long screw 301, the second unidirectional long screw 302, the third unidirectional long screw 303 and the fourth unidirectional long screw 30 The lower ends of the 4 rods are respectively sleeved with rectangular one-way sliders 406, and the outer walls of the rectangular one-way sliders 406 close to the middle of the bottom plate 101 are fixedly connected with L-shaped plates 407, and the middle of the upper surface of the bottom plate 101 is fixedly connected with a plurality of water volume control boxes 408, and the middle of the water volume control box 408 is slidably connected with a water volume control board 410, and the board body of the water volume control board 410 is provided with a plurality of water holes 411, and the upper end of the water volume control board 410 extends to the outside of the water volume control box 408, and the upper surface of the water volume control board 410 is fixedly connected with the lower surface of the L-shaped plate 407, and the end of the water volume control box 408 away from the middle of the bottom plate 101 is provided with a water inlet cavity 412, and the end of the water volume control box 408 close to the middle of the bottom plate 101 is provided with a drainage cavity 413 , the tube body of the annular water pipe 404 is provided with a plurality of fifth connecting pipes 409, and the fifth connecting pipes 409 are all extended to the inside of the water inlet cavity 412, the assembly frame 414 is fixedly connected to the upper surface of the connection cover 104, the two sides of the middle part of the assembly frame 414 are respectively fixedly connected with the first spray plate 415, the front end and the rear end of the assembly frame 414 are respectively fixedly connected with the second spray plate 416, the lower ends of the water volume control boxes 408 on both sides are connected with the first liquid transfer tube 417, the lower ends of the first liquid transfer tube 417 extend to the inside of the drainage cavities 413 on both sides, the upper ends of the first liquid transfer tube 417 are respectively connected with the first spray plate 415, the lower ends of the front end and the rear end water volume control boxes 408 are connected with the second liquid transfer tube 418, and the second liquid transfer tube The lower ends of 418 extend to the interior of the front and rear drainage chambers 413 respectively, the upper ends of the second liquid transfer tube 418 are connected to the second spray plate 416 respectively, and the lower ends of the first spray plate 415 and the second spray plate 416 are connected to a plurality of spray nozzles 419. During the rotation of the third unidirectional long screw 303, the circular unidirectional slider 312 of the rod body will drive the L-shaped plate 407 to move upward, and at this time, the water volume control plate 410 will move upward synchronously and make the corresponding water hole 411 upward, and the opening degree of the water hole 411 will change, thereby realizing the preliminary adjustment of the spray intensity. After the position of the water volume control plate 410 and the position of the cam 209 are determined, the electromagnetic control valve 403 is opened and the second water pump 401 is turned on.At this time, the water inside the lifting cylinder 215 is transported to the inside of the annular water pipe 404 through the third connecting pipe 402 and the fourth connecting pipe 405. At this time, the water inside the lifting cylinder 215 is extracted, so that the sealing slide plate 216 will move downward and drive the assembly plate 219 to move downward synchronously until it returns to its original position. At this time, the first water pump 211 is turned on to continuously supply water to the inside of the lifting cylinder 215. At this time, under the action of the second water pump 401, the continuously supplied water can be transmitted to the inside of the annular water pipe 404. At this time, the fifth connecting pipe 409 will transport the water to the water inlet chamber 412 of the water volume control box 408. Since the position of the water volume control plate 410 has been adjusted before, the opening degree of the water hole 411 has also changed, so the water entering the water inlet chamber 412 will be adjusted according to the water hole 411. The actual situation of 411 enters the drainage cavity 413 through the water volume control plate 410. At this time, the water inside the water volume control box 408 will be transmitted to the inside of the second spray plate 416 at the front end through the second liquid transfer tube 418 at the front end, and then spray precipitation to the surface of the experimental model 107 through the corresponding spray nozzle 419. At the same time, when the second water pump 401 is started, the water inside the annular water pipe 404 will also enter the water volume control box 408 where the spray flow rate is not adjusted. At this time, the water inside the water volume control box 408 will be respectively transported to the inside of the first spray plates 415 on both sides and the second spray plate 416 at the rear end through the first liquid transfer tubes 417 on both sides and the second liquid transfer tubes 418 at the rear end. At this time, the amount of water sprayed inside the second spray plate 416 at the front end will be greater than that of the second spray plate 416 at the rear end. Plate 416 is larger than the first spray plates 415 on both sides, thereby realizing the operation of spraying the foot of the experimental model 107 according to the adjusted spray intensity, thereby completing the entire simulation experiment process of improving the vibration amplitude and spray intensity of the foot of the slope, wherein the first water pump 211 supplies water to the inside of the lifting cylinder 215, and starts the servo motor 201. Firstly, the matching position and state of the cam 209 and the vibration convex plate 210 can be accurately changed, thereby realizing the precise adjustment of the vibration amplitude of the foot, top and both sides of the slope of the experimental model 107, meeting the requirements for simulating the vibration amplitude of the slope under different experimental conditions, and contributing to the in-depth study of the influence of the vibration amplitude on the instability mechanism of the slope. Secondly, by flexibly controlling the rotation period of multiple unidirectional long screws, The one-way long screw drives the movement of the corresponding circular one-way slider 312, the L-shaped plate 407 and the water control plate 410, which can effectively adjust the opening degree of the water hole 411, and then flexibly control the spraying intensity of the single first spray plate 415 and the single second spray plate 416. This makes it possible to simulate the instability of the slope under different positions and different rainfall intensities during the experiment. Thirdly, it can simultaneously realize the simulation of earthquake vibration and rainfall spraying, and can independently and accurately adjust the vibration amplitude and the spraying intensity, so as to simulate the slope instability process under various coupling conditions of earthquake and rainfall, and more comprehensively reflect the comprehensive effect of complex environmental factors on slope stability in actual geological disasters, which greatly improves the authenticity and effectiveness of the experiment.Fourth, under the same initial experimental simulation conditions, the experiment can be repeated many times according to the set vibration amplitude and spray intensity parameters, and the characteristics and laws of slope instability under different parameter combinations can be easily compared, which is conducive to scientific researchers to obtain more accurate and reliable experimental data.

[0035] Specifically, the working principle of the experimental device for simulating the instability mechanism of slope under the coupling of earthquake and rainfall is as follows: during the simulation experiment, when it is necessary to increase the vibration amplitude and spray intensity of the slope foot of the experimental model 107, start the first water pump 211 and close the electromagnetic control valve 403. At this time, the first water pump 211 will pump water into the interior of the lifting cylinder 215 through the second connecting pipe 213. At this time, the water inside the lifting cylinder 215 pushes the sealing slide plate 216 to move upward, driving the support rod 218, the assembly plate 219 and the first transmission wheel 220, the second transmission wheel 221, the toothed belt 223 and the intermediate gear 222 thereon to move upward. At this time, the first transmission wheel 220 slides on the outer wall of the long card strip 203, and the intermediate gear 222 successively engages with the inner The gear rings 227 mesh with each other. When the intermediate gear 222 moves upward to the horizontal position of the third driven gear 307, the first water pump 211 stops pumping water. At this time, the intermediate gear 222 will mesh with the third inner gear ring 227 from bottom to top. At this time, the servo motor 201 is started to make the long rotating rod 202 start to rotate. At this time, the first transmission wheel 220 can be rotated under the action of the long clamping strip 203, and the second transmission wheel 221 and the intermediate gear 222 are driven to rotate under the action of the toothed belt 223. At this time, the inner gear ring 227 at the corresponding position will rotate synchronously, thereby driving the third unidirectional long screw 303 to rotate. At this time, the third unidirectional long screw 303 will drive the second bevel gear 309 to rotate, and then through the meshing with the third bevel gear 311, The transmission is combined to rotate the one-way short screw 310. At this time, the circular one-way slider 312 will drive the positioning sleeve 313 and the card sleeve 208 to slide on the outer wall of the short clamping strip 207. At this time, the matching position of the cam 209 and the vibration convex plate 210 will also change. Among them, the shape of the vibration convex plate 210 is small at the end close to the middle of the connecting cover 104 and large at the end away from the middle of the connecting cover 104. Then, when the cam 209 moves in the direction away from the middle of the connecting cover 104, the contact area between the cam 209 and the vibration convex plate 210 will increase. At the same time, when the servo motor 201 drives the long rotating rod 202 to rotate, the bevel gear 204 will mesh with the first bevel gear 228 and make the middle transfer rod 205 and the short rotating rod 206 respectively drive the short clamping strip 207 to rotate. At this time, the short card strip 207 in the rotation process will drive the cam 209 whose position has been adjusted to rotate. At this time, the purpose of adjusting the amplitude of the slope foot is achieved. When the vibration intensity needs to be increased, it is only necessary to increase the rotation speed of the servo motor 201 to increase the number of contacts between the cam 209 and the vibration convex plate 210. At the same time, during the rotation of the third unidirectional long screw 303, the circular unidirectional slider 312 of the rod body will drive the L-shaped plate 407 to move upward. At this time, the water volume control plate 410 will move upward synchronously and make the corresponding water hole 411 upward. The opening degree of the water hole 411 will change, thereby realizing the preliminary adjustment of the spray intensity. After the position of the water volume control plate 410 and the position of the cam 209 are determined,Then open the electromagnetic control valve 403 and the second water pump 401. At this time, the water inside the lifting cylinder 215 is transported to the inside of the annular water pipe 404 through the third connecting pipe 402 and the fourth connecting pipe 405. At this time, the water inside the lifting cylinder 215 is extracted, so that the sealing slide plate 216 will move downward and drive the assembly plate 219 to move downward synchronously until it returns to its original position. At this time, open the first water pump 211 again to continuously supply water to the inside of the lifting cylinder 215. At this time, under the action of the second water pump 401, the continuously supplied water can be transmitted to the inside of the annular water pipe 404. At this time, the fifth connecting pipe 409 will transport water to the water inlet chamber 412 of the water volume control box 408. Since the position of the water volume control board 410 has been adjusted before, the opening degree of the water hole 411 has also changed. Therefore, the water entering the water inlet chamber 412 will enter the drainage chamber 413 through the water volume control board 410 according to the actual situation of the water hole 411. At this time, the water The water inside the volume control box 408 will be transmitted to the inside of the second spray plate 416 at the front end through the second liquid transfer tube 418 at the front end, and then spray precipitation to the surface of the experimental model 107 through the corresponding spray nozzle 419. At the same time, when the second water pump 401 is started, the water inside the annular water pipe 404 will also enter the water volume control box 408 where the spray flow rate is not adjusted. At this time, the water inside the water volume control box 408 will be respectively transported to the inside of the first spray plate 415 at both sides and the second spray plate 416 at the rear end through the first liquid transfer tube 417 at both sides and the second liquid transfer tube 418 at the rear end. At this time, the amount of water sprayed inside the second spray plate 416 at the front end will be greater than the second spray plate 416 at the rear end, and at the same time greater than the first spray plates 415 at both sides, thereby realizing the operation of spraying the slope foot of the experimental model 107 according to the adjusted spray intensity, thereby completing the entire simulation experiment process of increasing the vibration amplitude and spray intensity of the slope foot.

[0036] It should be noted that the specific models and specifications of the servo motor 201, the first water pump 211 and the second water pump 401 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be repeated in detail.

[0037] The power supply and principles of the servo motor 201 , the first water pump 211 and the second water pump 401 are clear to those skilled in the art and will not be described in detail herein.

[0038] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0039] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. Experimental device for simulating slope instability mechanism under the coupling of earthquake and rainfall, characterized by: include: Model storage mechanism (1); A driving transmission mechanism (2), wherein the transmission mechanism (2) is located at the lower end of the model storage mechanism (1), and the transmission mechanism (2) causes the model in the model storage mechanism (1) to vibrate; An adjusting mechanism (3), the adjusting mechanism (3) being located at the lower end of the model storage mechanism (1), the adjusting mechanism (3) being located in the middle of the transmission mechanism (2), the transmission mechanism (2) moving upward and driving the adjusting mechanism (3) to rotate, and the adjusting mechanism (3) being able to control the vibration amplitude of one side of the model and the amount of water sprayed; A spray mechanism (4), wherein the spray mechanism (4) is located at the upper end of the model storage mechanism (1), and the adjustment mechanism (3) controls the spray flow rate of the spray mechanism (4) during rotation.

2. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 1 is characterized in that: The model storage mechanism (1) comprises a bottom plate (101), the four corners of the upper surface of the bottom plate (101) are fixedly connected to support legs (102), the upper surface of the support legs (102) are fixedly connected to a connecting frame (103), the inner wall of the connecting frame (103) is fixedly connected to a connecting cover (104), the four corners of the inner bottom surface of the connecting cover (104) are hingedly connected to vibration springs (105), the upper ends of the vibration springs (105) are hingedly connected to a vibration plate (106), and the upper surface of the vibration plate (106) is provided with an experimental model (107).

3. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 2 is characterized in that: Liquid discharge valve pipes (108) are connected through both sides of the front end and the rear end of the lower part of the connection cover (104).

4. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 2 is characterized in that: The transmission mechanism (2) comprises a servo motor (201), a lifting cylinder (215) and a transmission frame (224); the servo motor (201) is fixedly connected to the middle part of the upper surface of the base plate (101); the output end of the servo motor (201) is fixedly connected to a long rotating rod (202); the outer wall of the long rotating rod (202) close to the upper part is fixedly connected to a plurality of long clamping strips (203); the upper end of the long rotating rod (202) extends to the inside of the connecting cover (104) and is fixedly connected to a bevel gear (204); the middle parts of the inner walls of the front and rear ends of the connecting cover (104) are respectively rotatably connected to the middle parts of the middle rotating rods (205); the middle parts of the inner walls of both sides of the connecting cover (104) are respectively rotatably connected to the short rotating rods (206); the middle rotating rod (2 05) and the outer wall of the short rotating rod (206) at one end away from the bevel gear (204) are fixedly connected with a plurality of short clips (207), the outer wall of the short clips (207) are slidably connected with a clip sleeve (208), the outer wall of the clip sleeve (208) at one end close to the bevel gear (204) is fixedly connected with a cam (209), the lower surface of the vibration plate (106) is fixedly connected with a plurality of vibration convex plates (210), the cam (209) cooperates with the vibration convex plates (210) during rotation, the outer walls of the intermediate rotating rod (205) and the short rotating rod (206) at one end close to the bevel gear (204) are fixedly connected with a first bevel gear (228), and the first bevel gear (228) is meshed with the bevel gear (204); A first water pump (211) is fixedly connected to one side of the upper surface of the rear end of the bottom plate (101); the lifting cylinder (215) is fixedly connected to the middle of the upper surface of the bottom plate (101); a water outlet of the first water pump (211) is fixedly connected to a second connecting pipe (213); an end of the second connecting pipe (213) away from the first water pump (211) is through-connected to one side of the lower end of the lifting cylinder (215); a sealing slide plate (216) is slidably connected to the interior of the lower end of the lifting cylinder (215); a plurality of downward pressure springs (217) are fixedly connected to the edge of the inner top of the lifting cylinder (215); the lower surface of the downward pressure spring (217) is fixedly connected to the upper surface of the sealing slide plate (216); and the middle of the upper surface of the sealing slide plate (216) is fixedly connected to the lower surface of the downward pressure spring (217). A support rod (218) is fixedly connected, the upper end of the support rod (218) extends to the upper part of the lifting cylinder (215) and is fixedly connected to an assembly plate (219), the front end of the assembly plate (219) is sleeved on the outer wall of the long rotating rod (202), the front end of the upper surface of the assembly plate (219) is rotatably connected to a first transmission wheel (220), the first transmission wheel (220) is slidably connected to the outer wall of the long clamping strip (203) during the upward movement, the rear end of the upper surface of the assembly plate (219) is rotatably connected to a second transmission wheel (221), the outer walls of the first transmission wheel (220) and the second transmission wheel (221) are sleeved with a toothed belt (223), and the upper surface of the second transmission wheel (221) is fixedly connected to an intermediate gear (222); The upper surface of the transmission frame (224) is fixedly connected to the middle portion of the lower surface of the connection cover (104); the inner wall of the transmission frame (224) is fixedly connected to a plurality of assembly rings (225); the inner wall of the assembly ring (225) is fixedly connected to a bearing ring (226); the inner wall of the bearing ring (226) is fixedly connected to an inner gear ring (227); and the intermediate gear (222) is respectively meshed with the plurality of inner gear rings (227).

5. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 4 is characterized in that: During the rotation of the transfer rod (205), the short clamping strip (207) drives the clamping sleeve (208) and the cam (209) to rotate.

6. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 4 is characterized in that: A water storage box (214) is fixedly connected to the middle of the front end of the upper surface of the bottom plate (101), a first connecting pipe (212) is fixedly connected to the water suction port of the first water pump (211), and a front end of the first connecting pipe (212) is connected to the lower end of one side of the water storage box (214).

7. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 4 is characterized in that: The adjusting mechanism (3) comprises a first one-way long screw (301), a second one-way long screw (302), a third one-way long screw (303) and a fourth one-way long screw (304); the first one-way long screw (301) is rotatably connected to the rear end of the upper surface of the base plate (101); the third one-way long screw (303) is rotatably connected to the front end of the upper surface of the base plate (101); the second one-way long screw (302) and the fourth one-way long screw (304) are rotatably connected to two sides of the upper surface of the base plate (101), respectively; the lifting cylinder (215) is located between the first one-way long screw (301), the second one-way long screw (302) and the third one-way long screw (303). and the lower end of a fourth one-way long screw (304), the outer wall in the middle of the first one-way long screw (301) is fixedly connected to a first driven gear (305), the outer wall near the middle of the second one-way long screw (302) is fixedly connected to a second driven gear (306), the outer wall near the upper part of the third one-way long screw (303) is fixedly connected to a third driven gear (307), the outer wall at the upper part of the fourth one-way long screw (304) is fixedly connected to a fourth driven gear (308), and the first driven gear (305), the second driven gear (306), the third driven gear (307) and the fourth driven gear (308) are respectively meshed with the inner gear ring (227); The upper ends of the first unidirectional long screw (301), the second unidirectional long screw (302), the third unidirectional long screw (303) and the fourth unidirectional long screw (304) extend into the interior of the connecting cover (104) and are fixedly connected to the second bevel gear (309); the inner wall of the lower end of the connecting cover (104) is rotatably connected to a plurality of unidirectional short screws (310); one end of the unidirectional short screw (310) close to the middle of the connecting cover (104) is fixedly connected to the third bevel gear (311); the second bevel gear (309) and the third bevel gear (311) are meshed with each other; one end of the unidirectional short screw (310) close to the connecting cover (104) is sleeved with a circular unidirectional slider (312); the upper end of the circular unidirectional slider (312) is fixedly connected to a positioning sleeve (313); the inner wall of the positioning sleeve (313) is rotatably connected to the outer wall of the clamping sleeve (208).

8. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 7 is characterized in that: The first driven gear (305) is located at the lower end of the second driven gear (306), the second driven gear (306) is located at the lower end of the third driven gear (307), and the third driven gear (307) is located at the lower end of the fourth driven gear (308).

9. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 7 is characterized in that: The spray mechanism (4) comprises a second water pump (401) and an assembly frame (414); the second water pump (401) is fixedly connected to the other side of the rear end of the upper surface of the bottom plate (101); the water suction port of the second water pump (401) is fixedly connected to a third connecting pipe (402); the end of the third connecting pipe (402) away from the second water pump (401) is connected to the lower end of the lifting cylinder (215); the pipe body of the third connecting pipe (402) is provided with an electromagnetic control valve (403); the middle part of the upper end of the bottom plate (101) is fixedly connected to an annular water pipe (404); the water outlet of the second water pump (401) is fixedly connected to a fourth connecting pipe (405); the lower end of the fourth connecting pipe (405) is connected to the annular water pipe (404); The lower ends of the rod bodies of the first one-way long screw rod (301), the second one-way long screw rod (302), the third one-way long screw rod (303) and the fourth one-way long screw rod (304) are respectively sleeved with rectangular one-way sliding blocks (406); the outer walls of the rectangular one-way sliding blocks (406) close to the middle of the bottom plate (101) are fixedly connected to an L-shaped plate (407); the middle of the upper surface of the bottom plate (101) is fixedly connected to a plurality of water volume control boxes (408); the middle of the water volume control boxes (408) is slidably connected to a water volume control board (410); the board body of the water volume control board (410) is provided with a plurality of water through holes ( 411), the upper end of the water volume control plate (410) extends to the outside of the water volume control box (408), the upper surface of the water volume control plate (410) is fixedly connected to the lower surface of the L-shaped plate (407), the end of the water volume control box (408) away from the middle of the bottom plate (101) is provided with a water inlet cavity (412), the end of the water volume control box (408) close to the middle of the bottom plate (101) is provided with a water discharge cavity (413), and the tube body of the annular water pipe (404) is provided with a plurality of fifth connecting pipes (409), and the fifth connecting pipes (409) are all through and extend to the inside of the water inlet cavity (412); The assembly frame (414) is fixedly connected to the upper surface of the connection cover (104); the first spray plates (415) are fixedly connected to both sides of the middle of the assembly frame (414); the front end and the rear end of the assembly frame (414) are fixedly connected to the second spray plates (416); the lower ends of the water volume control boxes (408) on both sides are connected through first liquid transfer tubes (417); the lower ends of the first liquid transfer tubes (417) extend to the inside of the drainage cavities (413) on both sides; the upper ends of the first liquid transfer tubes (417) are connected through the first spray plates (415); the lower ends of the water volume control boxes (408) on the front and rear ends are connected through second liquid transfer tubes (418); the lower ends of the second liquid transfer tubes (418) extend to the inside of the drainage cavities (413) on the front and rear ends; and the upper ends of the second liquid transfer tubes (418) are connected through the second spray plates (416).

10. The experimental device for simulating slope instability mechanism under the coupling effect of earthquake and rainfall according to claim 9 is characterized in that: The lower ends of the first spray plate (415) and the second spray plate (416) are both connected through a plurality of spray nozzles (419).

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