An indoor test system for debris flow dam breach

Abstract

The present invention belongs to the field of test technology, and in particular to an indoor test system for debris flow weir dam breach. Aiming at the problems that the existing test schemes have poor controllability and high requirements for sites, the following scheme is proposed, which includes a large-capacity upstream reservoir, the outlet of the large-capacity upstream reservoir is connected to a main river channel, a weir dam is accumulated inside the main river channel, and the sides of the weir dam are provided with uneroded dam bodies on both sides, which improves the accuracy of simulation results and saves the construction cost of simulation tests. An ascending belt conveyor and a descending belt conveyor are used to control the inflow speed, which avoids the uncertainty and randomness of slope control and debris flow movement itself, improves the accuracy of simulation results, and is conducive to the prediction and evaluation of the breach process and impact of debris flow weir dams. At the same time, the segmented conveying is not only applicable to various inflow speeds, but also can add materials at any time, saving the cost of chute construction and material lifting in the prior art.

Description

Technical Field

[0001] The invention relates to the field of test technology, and in particular to an indoor test system for debris flow dam breach. Background Art

[0002] The Chinese patent document with application number 202410006314.6 discloses an experimental method and device for simulating the formation and collapse of a narrow and deep valley dam, aiming to solve the problems of poor accuracy and high consumption of manpower and material resources in the existing dam collapse simulation method. The scheme mainly includes: constructing an experimental device; controlling the water supply module to form an upstream flow, and equipping the soil sliding module with soil that can completely block the river channel, controlling the soil in the soil sliding module to slide into the river channel model and accumulate into a dam body; when the soil sliding into the river channel model completely blocks the river channel, obtaining the test condition parameters; determining whether the dam will collapse under the test condition parameters, and if so, simulating the formation and collapse process of the dam in the narrow and deep valley; recording the image data and test data in the process of simulating the formation and collapse of the dam in the narrow and deep valley through the monitoring module. This application improves the accuracy of the dam collapse simulation and reduces the consumption of manpower and material resources, and is suitable for narrow and deep valleys.

[0003] The debris flow dam breach experimental simulation technology aims to predict and evaluate the breach process and impact of debris flow dams through simulation. The existing simulation system uses a material hopper to add materials, and controls the flow rate of debris flow into the main river channel by adjusting the height and slope of the chute, simulating the process of debris flow blocking the river channel and forming a dam body under different mainstream flow rates. After the debris flow dam is formed, the water level of the upstream reservoir rises with the upstream flow until it overflows the top of the dam, causing the dam to breach.

[0004] Due to the strong instability of debris flow movement, it is difficult for existing technologies to accurately control the inflow velocity of debris flow by changing the chute height. The complex physical processes such as bottom friction, internal particle collision, and sediment erosion during the debris flow along the chute will cause uncertainty in the velocity when it enters the main river channel. At the same time, when simulating a higher inflow velocity, the existing simulation technology requires a larger chute height, which has higher requirements for the test site. The extension of the debris flow transportation process will further increase the velocity error. In addition, the increase in height and the extension of the chute will increase the volume demand for the material bucket, increasing the difficulty of material lifting. Summary of the invention

[0005] Based on the technical problems that the background technology has poor controllability and high requirements on the site, the present invention proposes an indoor test system for debris flow dam breach.

[0006] The invention provides an indoor test system for the burst of debris flow dam, comprising a large-capacity upstream reservoir, wherein the outlet of the large-capacity upstream reservoir is connected with a main river channel, a dam is piled up inside the main river channel, and the side of the dam is provided with uneroded dam bodies on both banks, a debris flow branch ditch is extended on the surface of the dam, a material hopper is connected to the feed port of the debris flow branch ditch, and river banks are arranged outside the uneroded dam bodies on both banks, a descending belt conveyor is connected to the feed port of the debris flow branch ditch, and an ascending belt conveyor is connected to the feed end of the descending belt conveyor, and a bottom hole is opened at the discharge end of the material hopper, and the bottom hole of the material hopper is connected with a material pipe, and the discharge end of the material pipe is connected to the ascending belt conveyor. Corresponding to the inner side of the belt, an adjusting mechanism is hinged between the bottom of the descending belt conveyor and the ascending belt conveyor, and the surface of the adjusting mechanism is rotatably sleeved with a lifting mechanism, which improves the accuracy of the simulation results and saves the construction cost of the simulation test. The ascending belt conveyor and the descending belt conveyor are used to control the inflow speed, avoiding the uncertainty and randomness of slope control and debris flow movement itself, improving the accuracy of the simulation results, and facilitating the prediction and evaluation of the collapse process and impact of debris flow dams. At the same time, the segmented conveying is not only applicable to various inflow speeds, but also can add materials at any time, saving the cost of chute construction and material lifting in the existing technology.

[0007] Preferably, the adjusting mechanism comprises a base, a rotating frame, a supporting column and a frame, the right side of the top of the base is rotatably connected to the right end of the rotating frame, the supporting column is provided with two, both sides of the top of the rotating frame are respectively bolted to the bottom of the two supporting columns, the bottoms of the descending belt conveyor and the ascending belt conveyor are respectively hinged to the tops of the two supporting columns, the bottom of the frame is bolted to the top of the rotating frame, and the lifting mechanism is connected to the frame. The adjusting mechanism comprises a base, a rotating frame, a supporting column and a frame, the right side of the top of the base is rotatably connected to the right end of the rotating frame, the supporting column is provided with two, both sides of the top of the rotating frame are respectively bolted to the bottoms of the two supporting columns, the bottoms of the descending belt conveyor and the ascending belt conveyor are respectively hinged to the tops of the two supporting columns, the bottom of the frame is bolted to the top of the rotating frame, the lifting mechanism is connected to the frame, the base can be fixed on the ground, can drive the rotating frame to rotate, the rotating frame can drive the supporting column to move, and the supporting column can drive the descending belt conveyor and the ascending belt conveyor.

[0008] Preferably, the bottom of the rotating frame is rotatably connected to a roller, the surface of the roller is slidably connected to the top of the base, the right bolt on the top of the rotating frame is connected to a rotating motor, the output end of the rotating motor is keyed to the hole of the base, the roller is used to support the rotating frame to facilitate the rotation of the rotating frame, and the rotating motor is used to drive the rotating frame to rotate.

[0009] Preferably, the lifting mechanism includes a rotating rod, a main sprocket, a chain and a driving assembly. The left end of the rotating rod surface is keyed to the axis of the main sprocket, the teeth of the main sprocket are engaged with the inside of the chain, and the chain is engaged with the driving assembly. By rotating the rotating rod, the rotating rod can drive the main sprocket to rotate, and the main sprocket can drive the chain to rotate.

[0010] Preferably, the driving assembly includes a secondary sprocket, a connecting shaft, a main bevel gear and a transmission assembly. The top end of the chain is meshed with the teeth of the secondary sprocket, and the axis of the secondary sprocket is connected to the left end key of the surface of the connecting shaft. There are two main bevel gears, and the axes of the two main bevel gears are connected to the surface keys of the connecting shaft. The main bevel gear is meshed with the transmission assembly. The chain can drive the secondary sprocket to rotate. The size of the secondary sprocket is smaller than that of the main sprocket, which can produce an acceleration effect on the secondary sprocket. The secondary sprocket can drive the connecting shaft to rotate, and the connecting shaft can drive the two main bevel gears to rotate.

[0011] Preferably, the transmission assembly includes a secondary bevel gear, a screw rod, a slide bar and a lifting assembly. There are two secondary bevel gears and two screw rods. The teeth of the main bevel gear are meshed with the teeth of the secondary bevel gear. The axis of the secondary bevel gear is keyed to the bottom end of the screw rod. The surfaces of the two screw rods are threadedly connected to the screw holes of the slide bar. The slide bar is hinged to the lifting assembly. The main bevel gear can drive the secondary bevel gear to rotate, the secondary bevel gear can drive the screw rod to rotate, and the screw rod can drive the slide bar to rise and fall.

[0012] Preferably, the lifting assembly includes a sliding frame, a transmission frame and a transmission rod, and the sliding frame, the transmission frame and the transmission rod are each provided with two, the rear sides of the two sliding frames are hinged to the surface of the sliding bar, the interior of the sliding frame is slidably connected to the surface of the transmission frame, the transmission frame is hinged to the frame, and the end of the transmission frame away from the frame is hinged to the bottom end of the transmission rod, the surfaces of the descending belt conveyor and the ascending belt conveyor are respectively hinged to the top ends of the two transmission rods, the sliding bar can drive the sliding frame to move, the sliding frame can slide on the surface of the transmission frame and drive the transmission frame to rotate, the transmission frame is rotatably arranged with the sliding bar through a bearing, the transmission frame can drive the transmission rod to move, and the transmission rod can drive the descending belt conveyor and the ascending belt conveyor to rotate to adjust the inclination angle of the discharge material.

[0013] Preferably, both ends of the rotating rod surface are rotatably sleeved with the inner side of the frame, both ends of the rotating rod extend to the outside of the frame and are keyed with rotating handles, both ends of the connecting shaft are rotatably sleeved with the inner side of the frame, the rotating rod is rotatably arranged with the frame through bearings to ensure the smooth rotation of the rotating rod, the rotating handle is used to drive the rotating rod to rotate, and the connecting shaft is rotatably arranged with the frame through bearings.

[0014] Preferably, the bottom end of the screw rod surface is rotatably sleeved with the inner part of the frame, the rear side of the slide bar is slidably connected to the limit frame, the rear side of the limit frame is connected to the internal bolts of the frame, the screw rod is rotatably arranged with the frame through bearings to ensure the stability of the screw rod rotation, and the limit frame guides the slide bar to facilitate the up and down movement of the slide bar.

[0015] Preferably, the descending belt conveyor and the ascending belt conveyor both include a U-shaped belt conveyor, a rotating shaft, a supporting frame and an adjustable speed motor. The inner side of the supporting frame is rotatably connected to both ends of the rotating shaft. The supporting frame is bolted to the adjustable speed motor. The adjustable speed motor is keyed to the rotating shaft. The inner side of the U-shaped belt conveyor is rotatably connected to the surface of the rotating shaft. The adjustable speed motor drives the rotating shaft to rotate, and the rotating shaft can drive the rotation of the U-shaped belt conveyor. Therefore, the rotation speed of the U-shaped belt conveyor can be adjusted by the adjustable speed motor. The U-shaped belt conveyor is in close contact with the rotating shaft and rotates with the rotation of the rotating shaft. The transmission rod can drive the supporting frame to rotate.

[0016] The beneficial effects of the present invention are as follows: the accuracy of simulation results is improved, the construction cost of simulation tests is saved, an ascending belt conveyor and a descending belt conveyor are used to control the inflow speed, the uncertainty and randomness of slope control and debris flow movement itself are avoided, the accuracy of simulation results is improved, and it is beneficial to predict and evaluate the collapse process and impact of debris flow dams. At the same time, the segmented conveying is not only applicable to various inflow speeds, but also can add materials at any time, saving the cost of chute construction and material lifting in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the top view of the structure of an indoor test system for debris flow dam breach proposed by the present invention;

[0018] Figure 2 A schematic diagram of the main river channel structure of an indoor test system for debris flow dam breach proposed by the present invention;

[0019] Figure 3 It is a left-side structural schematic diagram of a support frame of a debris flow dam breach indoor test system proposed by the present invention;

[0020] Figure 4 A schematic diagram of the internal structure of a framework of an indoor test system for debris flow dam breach proposed by the present invention;

[0021] Figure 5 A schematic diagram of the three-dimensional structure of a main sprocket of a debris flow dam breach indoor test system proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of a slide bar in an indoor test system for debris flow dam breach proposed by the present invention.

[0023] In the figure: 1. Large-capacity upstream reservoir; 2. Weir dam; 3. Main river channel; 4. Material bucket; 5. Mud-rock flow tributary; 6. Uneroded dam body on both sides; 7. River bank; 8. Rotating shaft; 9. Descending belt conveyor; 10. Support column; 11. Ascending belt conveyor; 12. Material pipe; 13. Bottom hole; 14. Adjustable speed motor; 15. U-shaped belt conveyor; 16. Support frame; 17. Rotating motor; 18. Base; 19. Rotating frame; 20. Frame; 21. Rotating rod; 22. Main sprocket; 23. Chain; 24. Auxiliary sprocket; 25. Connecting shaft; 26. Main bevel gear; 27. Auxiliary bevel gear; 28. Screw; 29. ​​Slide; 30. Slide frame; 31. Transmission frame; 32. Transmission rod. DETAILED DESCRIPTION

[0024] The present invention will be further explained below in conjunction with specific embodiments. Example

[0025] refer to Figure 1-6 In this embodiment, a debris flow dam breach indoor test system is proposed, comprising a large storage capacity upstream reservoir 1, the outlet of the large storage capacity upstream reservoir 1 is connected with a main river channel 3, a dam 2 is piled up inside the main river channel 3, the side of the dam 2 is provided with uneroded dam bodies 6 on both sides, a debris flow branch ditch 5 is extended on the surface of the dam 2, the feed port of the debris flow branch ditch 5 is connected with a material hopper 4, the outer side of the uneroded dam body 6 on both sides is provided with a river bank 7, the feed port of the debris flow branch ditch 5 is connected with a descending belt conveyor 9, the feed end of the descending belt conveyor 9 is connected with an ascending belt conveyor 11, the discharge end of the material hopper 4 is provided with a bottom hole 13, the bottom hole 13 of the material hopper 4 is connected with a material pipe 12, the discharge end of the material pipe 12 corresponds to the inner side of the ascending belt conveyor 11, an adjustment mechanism is hinged between the bottom of the descending belt conveyor 9 and the ascending belt conveyor 11, and a lifting mechanism is rotatably sleeved on the surface of the adjustment mechanism;

[0026] The adjustment mechanism includes a base 18, a rotating frame 19, a supporting column 10 and a frame 20. The right side of the top of the base 18 is rotatably connected to the right end of the rotating frame 19. Two supporting columns 10 are provided. The two sides of the top of the rotating frame 19 are respectively connected to the bottom bolts of the two supporting columns 10. The bottoms of the descending belt conveyor 9 and the ascending belt conveyor 11 are respectively hinged to the tops of the two supporting columns 10. The bottom of the frame 20 is connected to the top bolt of the rotating frame 19. The lifting mechanism is connected to the frame 20. The base 18 can be fixed on the ground and can drive the rotating frame 19 to rotate. The rotating frame 19 can drive the supporting column 10 to move. The supporting column 10 can drive the descending belt conveyor 9 and the ascending belt conveyor 11.

[0027] The bottom of the rotating frame 19 is rotatably connected with a roller, the surface of the roller is slidably connected with the top of the base 18, the right side of the top of the rotating frame 19 is bolted with a rotating motor 17, the output end of the rotating motor 17 is keyed with the hole of the base 18, the roller is used to support the rotating frame 19, and the rotating frame 19 is convenient for rotation, and the rotating motor 17 is used to drive the rotating frame 19 to rotate;

[0028] The lifting mechanism includes a rotating rod 21, a main sprocket 22, a chain 23 and a driving assembly. The left end of the rotating rod 21 is key-connected to the axis of the main sprocket 22. The teeth of the main sprocket 22 are meshed with the inside of the chain 23. The chain 23 is meshed with the driving assembly. When the rotating rod 21 is rotated, the rotating rod 21 can drive the main sprocket 22 to rotate, the main sprocket 22 can drive the chain 23 to rotate, and the chain 23 can drive the driving assembly to rotate.

[0029] The driving assembly includes a secondary sprocket 24, a connecting shaft 25, a main bevel gear 26 and a transmission assembly. The top end of the chain 23 is meshed with the teeth of the secondary sprocket 24. The axis of the secondary sprocket 24 is connected to the left end key of the surface of the connecting shaft 25. Two main bevel gears 26 are provided. The axis of the two main bevel gears 26 are connected to the surface key of the connecting shaft 25. The main bevel gear 26 is meshed with the transmission assembly. The chain 23 can drive the secondary sprocket 24 to rotate. The size of the secondary sprocket 24 is smaller than that of the main sprocket 22, which can produce an acceleration effect on the secondary sprocket 24. The secondary sprocket 24 can drive the connecting shaft 25 to rotate. The connecting shaft 25 can drive the two main bevel gears 26 to rotate. The main bevel gear 26 can drive the transmission assembly to rotate.

[0030] The transmission assembly includes a secondary bevel gear 27, a screw rod 28, a slide bar 29 and a lifting assembly. The secondary bevel gear 27 and the screw rod 28 are each provided with two. The teeth of the main bevel gear 26 mesh with the teeth of the secondary bevel gear 27. The axis of the secondary bevel gear 27 is keyed to the bottom end of the screw rod 28. The surfaces of the two screw rods 28 are threadedly connected to the screw holes of the slide bar 29. The slide bar 29 is hinged to the lifting assembly. The main bevel gear 26 can drive the secondary bevel gear 27 to rotate, the secondary bevel gear 27 can drive the screw rod 28 to rotate, the screw rod 28 can drive the slide bar 29 to rise and fall, and the slide bar 29 can drive the lifting assembly to rise and fall.

[0031] The lifting assembly includes a slide frame 30, a transmission frame 31 and a transmission rod 32. The slide frame 30, the transmission frame 31 and the transmission rod 32 are each provided with two. The rear sides of the two slide frames 30 are hinged to the surface of the slide bar 29. The interior of the slide frame 30 is slidably connected to the surface of the transmission frame 31. The transmission frame 31 is hinged to the frame 20. The end of the transmission frame 31 away from the frame 20 is hinged to the bottom end of the transmission rod 32. The surfaces of the descending belt conveyor 9 and the ascending belt conveyor 11 are respectively hinged to the top ends of the two transmission rods 32. The slide bar 29 can drive the slide frame 30 to move. The slide frame 30 can slide on the surface of the transmission frame 31 and drive the transmission frame 31 to rotate. The transmission frame 31 is rotatably arranged with the slide bar 29 through a bearing. The transmission frame 31 can drive the transmission rod 32 to move. The transmission rod 32 can drive the descending belt conveyor 9 and the ascending belt conveyor 11 to rotate to adjust the inclination angle of the discharge.

[0032] Both ends of the surface of the rotating rod 21 are rotatably sleeved with the inner side of the frame 20, and both ends of the rotating rod 21 extend to the outer side of the frame 20 and are keyed to a rotating handle, and both ends of the connecting shaft 25 are rotatably sleeved with the inner side of the frame 20, and the rotating rod 21 is rotatably arranged with the frame 20 through a bearing to ensure the stability of the rotation of the rotating rod 21, and the rotating handle is used to drive the rotating rod 21 to rotate, and the connecting shaft 25 is rotatably arranged with the frame 20 through a bearing;

[0033] The bottom end of the surface of the screw rod 28 is rotatably sleeved with the inside of the frame 20, the rear side of the slide bar 29 is slidably connected to the limit frame, the rear side of the limit frame is connected with the internal bolts of the frame 20, the screw rod 28 is rotatably arranged with the frame 20 through the bearing to ensure the stability of the rotation of the screw rod 28, and the limit frame guides the slide bar 29 to facilitate the up and down movement of the slide bar 29;

[0034] The descending belt conveyor 9 and the ascending belt conveyor 11 both include a U-shaped belt conveyor 15, a rotating shaft 8, a support frame 16 and an adjustable speed motor 14. The inner side of the support frame 16 is rotatably connected to both ends of the rotating shaft 8. The support frame 16 is bolted to the adjustable speed motor 14. The adjustable speed motor 14 is key-connected to the rotating shaft 8. The inner side of the U-shaped belt conveyor 15 is rotatably connected to the surface of the rotating shaft 8. The adjustable speed motor 14 drives the rotating shaft 8 to rotate. The rotating shaft 8 can drive the rotation of the U-shaped belt conveyor 15. Therefore, the rotation speed of the U-shaped belt conveyor 15 can be adjusted by the adjustable speed motor 14. The U-shaped belt conveyor 15 is in close contact with the rotating shaft 8 and rotates with the rotation of the rotating shaft 8. The transmission rod 32 can drive the support frame 16 to rotate.

[0035] The accuracy of the simulation results is improved, and the construction cost of the simulation test is saved. The ascending belt conveyor 11 and the descending belt conveyor 9 are used to control the inflow speed, which avoids the uncertainty and randomness of slope control and debris flow movement itself, improves the accuracy of the simulation results, and is conducive to the prediction and evaluation of the collapse process and impact of the debris flow dam 2. At the same time, the segmented conveying is not only applicable to various inflow speeds, but also can be added at any time, saving the cost of chute construction and material lifting in the prior art.

[0036] Working principle: the material in the material hopper 4 enters the main river channel 3 through the debris flow branch ditch 5, silting up the main river channel 3 to form a debris flow dam 2. The water level of the large-capacity upstream reservoir 1 continues to rise with the upstream flow. After the water level overflows the top of the dam 2, the dam 2 will burst. The material in the material hopper 4 enters the ascending belt conveyor 11 through the bottom hole 13 and the material pipe 12. The material is lifted by the rotation of the shaft 8 and enters the descending belt conveyor 9. Under the reverse rotation of the shaft 8, the material enters the main river channel 3. The adjustable speed motor 14 drives the shaft 8 to rotate, thereby driving the U-belt conveyor The conveyor belt 15 rotates, therefore, the rotation speed of the entire U-shaped belt conveyor 15 can be adjusted by the adjustable speed motor 14. The belt transmission system only simulates flow in a single direction, and the debris flow dam 2 collapse process often involves complex terrain changes. Therefore, a multi-directional adjustable simulation terrain device can be designed to simulate flow conditions of different slopes and directions, thereby improving the simulation accuracy of the experiment. To this end, the power supply of the rotating motor 17 can be turned on, and the rotating motor 17 is controlled by a motor controller. The rotating motor 17 can drive the rotating frame 19 to rotate, and the rotating The rotating frame 19 can rotate on the base 18, and the rotating frame 19 can drive the supporting column 10 to move, and the supporting column 10 can drive the descending belt conveyor 9 and the ascending belt conveyor 11 to move. At the same time, when the angles of the two need to be adjusted, the rotating rod 21 is rotated, and the rotating rod 21 can drive the main sprocket 22 to rotate, and the main sprocket 22 can drive the chain 23 to rotate, and the chain 23 can drive the secondary sprocket 24 to rotate. The size of the secondary sprocket 24 is smaller than that of the main sprocket 22, which can produce an acceleration effect on the secondary sprocket 24, and the secondary sprocket 24 can drive the connecting shaft 25 to rotate, and the connecting shaft 2 5 can drive two main bevel gears 26 to rotate, the main bevel gear 26 can drive the auxiliary bevel gear 27 to rotate, the auxiliary bevel gear 27 can drive the screw rod 28 to rotate, the screw rod 28 can drive the slide bar 29 to rise and fall, the slide bar 29 can drive the slide frame 30 to move, the slide frame 30 can slide on the surface of the transmission frame 31 and drive the transmission frame 31 to rotate, the transmission frame 31 is rotatably arranged with the slide bar 29 through the bearing, the transmission frame 31 can drive the transmission rod 32 to move, the transmission rod 32 can drive the descending belt conveyor 9 and the ascending belt conveyor 11 to rotate, and adjust the inclination angle of the discharge.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A debris flow dam breach indoor test system, comprising a large upstream reservoir (1), characterized in that: The outlet of the large storage capacity upstream reservoir (1) is connected to the main river channel (3), a barrier dam (2) is piled up inside the main river channel (3), and the sides of the barrier dam (2) are provided with uneroded dam bodies (6) on both sides, and a debris flow branch ditch (5) extends from the surface of the barrier dam (2), and the feed port of the debris flow branch ditch (5) is connected to a material hopper (4), and the outer sides of the uneroded dam bodies (6) on both sides are provided with river banks (7), and the feed port of the debris flow branch ditch (5) is connected to a descending belt conveyor (9), and the feed end of the descending belt conveyor (9) is connected to an ascending belt conveyor (11), and the discharge end of the material hopper (4) is provided with a bottom hole (13), and the bottom hole (13) of the material hopper (4) is connected to a material pipe (12), and the discharge end of the material pipe (12) is connected to the ascending belt conveyor ( 11), an adjusting mechanism is hinged between the bottoms of the descending belt conveyor (9) and the ascending belt conveyor (11), and a lifting mechanism is rotatably sleeved on the surface of the adjusting mechanism, the adjusting mechanism comprising a base (18), a rotating frame (19), a supporting column (10) and a frame (20), the right side of the top of the base (18) is rotatably connected to the right end of the rotating frame (19), two supporting columns (10) are provided, both sides of the top of the rotating frame (19) are respectively bolted to the bottoms of the two supporting columns (10), the bottoms of the descending belt conveyor (9) and the ascending belt conveyor (11) are respectively hinged to the tops of the two supporting columns (10), the bottom of the frame (20) is bolted to the top of the rotating frame (19), and the lifting mechanism is connected to the frame (20).

2. The indoor test system for debris flow dam breach according to claim 1 is characterized in that: The bottom of the rotating frame (19) is rotatably connected to a roller, the surface of the roller is slidably connected to the top of the base (18), the right side of the top of the rotating frame (19) is bolted to a rotating motor (17), and the output end of the rotating motor (17) is key-connected to a hole of the base (18).

3. The indoor test system for debris flow dam breach according to claim 1, characterized in that: The lifting mechanism comprises a rotating rod (21), a main sprocket (22), a chain (23) and a driving assembly. The left end of the surface of the rotating rod (21) is key-connected to the axis of the main sprocket (22), the teeth of the main sprocket (22) are meshed with the inside of the chain (23), and the chain (23) is meshed with the driving assembly.

4. The indoor test system for debris flow dam breach according to claim 3 is characterized in that: The driving assembly comprises a secondary sprocket (24), a connecting shaft (25), a main bevel gear (26) and a transmission assembly. The top end of the chain (23) meshes with the teeth of the secondary sprocket (24). The axis of the secondary sprocket (24) is keyed to the left end of the surface of the connecting shaft (25). Two main bevel gears (26) are provided. The axis of the two main bevel gears (26) are keyed to the surface of the connecting shaft (25). The main bevel gears (26) mesh with the transmission assembly.

5. The indoor test system for debris flow dam breach according to claim 4, characterized in that: The transmission assembly comprises a secondary bevel gear (27), a screw rod (28), a slide bar (29) and a lifting assembly. The secondary bevel gear (27) and the screw rod (28) are each provided with two, the teeth of the main bevel gear (26) are meshed with the teeth of the secondary bevel gear (27), the axis of the secondary bevel gear (27) is key-connected with the bottom end of the screw rod (28), the surfaces of the two screw rods (28) are threadedly connected with the screw holes of the slide bar (29), and the slide bar (29) is hinged to the lifting assembly.

6. The indoor test system for debris flow dam breach according to claim 5, characterized in that: The lifting assembly comprises a sliding frame (30), a transmission frame (31) and a transmission rod (32), wherein two sliding frames (30), two transmission frames (31) and two transmission rods (32) are provided, the rear sides of the two sliding frames (30) are hinged to the surface of the sliding bar (29), the interior of the sliding frame (30) is slidably connected to the surface of the transmission frame (31), the transmission frame (31) is hinged to the frame (20), one end of the transmission frame (31) away from the frame (20) is hinged to the bottom end of the transmission rod (32), and the surfaces of the descending belt conveyor (9) and the ascending belt conveyor (11) are respectively hinged to the top ends of the two transmission rods (32).

7. The indoor test system for debris flow dam breach according to claim 4, characterized in that: Both ends of the surface of the rotating rod (21) are rotatably sleeved with the inner side of the frame (20), both ends of the rotating rod (21) extend to the outer side of the frame (20) and are keyed to a rotating handle, and both ends of the connecting shaft (25) are rotatably sleeved with the inner side of the frame (20).

8. The indoor test system for debris flow dam breach according to claim 5, characterized in that: The bottom end of the surface of the screw rod (28) is rotatably sleeved with the inside of the frame (20), the rear side of the slide bar (29) is slidably connected to the limit frame, and the rear side of the limit frame is connected to the internal bolts of the frame (20).

9. The indoor test system for debris flow dam breach according to claim 1, characterized in that: The descending belt conveyor (9) and the ascending belt conveyor (11) both comprise a U-shaped belt conveyor (15), a rotating shaft (8), a support frame (16) and an adjustable speed motor (14); the inner side of the support frame (16) is rotatably connected to both ends of the rotating shaft (8); the support frame (16) is bolted to the adjustable speed motor (14); the adjustable speed motor (14) is keyed to the rotating shaft (8); and the inner side of the U-shaped belt conveyor (15) is rotatably connected to the surface of the rotating shaft (8).

Images