A simulation test device for the mechanical mechanism of erosion gully development

Abstract

This invention provides a simulation experimental device for the mechanical mechanism of erosion gully development, relating to the field of soil and water conservation experimental devices. The device includes: a frame; an experimental trough on the upper side of the frame, with experimental soil laid on the upper side of the trough; a flow-retardant trough at the upper end of the experimental trough and a runoff collection trough at the lower end of the trough; a water storage tank installed at the upper end of the frame; a spray pipe connected to the outside of the water storage tank via a water pump; and a nozzle connected to the lower end of the spray pipe. Side plates are provided on both sides of the experimental trough, with electric heating tubes embedded inside the side plates. This invention solves the problems of incomplete experimental conditions and long experimental time in existing erosion gully experimental devices.

Description

Technical Field

[0001] This utility model relates to the technical field of soil and water conservation experimental devices, specifically to an experimental device for simulating the mechanical mechanism of erosion gully development. Background Technology

[0002] Currently, research on gully head erosion and gully wall collapse typically employs methods such as remote sensing imagery, photography, and manual on-site location. These methods determine the erosion by comparing changes in images, photographs, or location at different times, but they have several significant drawbacks: 1) they usually require a long time to obtain; 2) the results obtained are of poor accuracy, especially as information on the occurrence process is almost nonexistent; 3) the experimental equipment cannot be reused, and the angle is fixed, making it impossible to conduct multiple sets of tests for erosion conditions at different slopes.

[0003] A search revealed existing technology (publication number: CN206906386U), which describes "a mobile experimental device for studying gully head erosion, comprising a water storage tank, a test trough, a runoff collection trough and a runoff collection pool, a mobile device, and an angle adjustment mechanism. One end of the test trough is provided with a flow channel, and the bottom of the flow channel has a flow slit. The mobile device includes a mobile trolley and a test base, with the test base fixed on the mobile trolley. The water storage tank is fixed on the higher side of the test base, and the runoff collection pool is fixed on the lower side of the test base. The test trough is installed on the test base via the angle adjustment mechanism. The runoff collection trough and the runoff collection pool are connected via a connecting hose, and a locking valve is installed on the connecting hose. The advantages of this invention are: simple structure, convenient operation and maintenance; it can simulate erosion conditions at different slopes by adjusting the tilt angle of the test trough to conduct targeted tests; it can also continuously conduct multiple sets of control tests for erosion conditions at different slopes; it is fast and accurate; and it is reusable."

[0004] While existing mobile experimental devices for studying gully head erosion achieve the simulated effects of erosion gullies and are reusable, they still have some shortcomings: Firstly, the water storage tanks and experimental trenches in these devices can only simulate the effect of water flowing from high to low. In reality, the flow of surface water is only one mechanical factor; the impact of falling rainwater on the surface is also a mechanical factor in erosion gullies. Therefore, the simulated experimental conditions are incomplete, potentially leading to experimental errors. Secondly, the water flow impact is continuous, whereas in reality, erosion gullies are formed only in a single rainy weather event. When intermittent water flow impact occurs, it is necessary to wait for the original experimental soil to dry. Existing technologies result in long drying times, affecting the overall efficiency of the experiment. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a simulation test device for the mechanical mechanism of erosion gully development is provided to solve the problems of incomplete experimental conditions and long experimental time in existing erosion gully experimental devices.

[0006] To achieve the above objectives, a simulation test device for the mechanical mechanism of erosion gully development is provided, comprising: a device frame, an experimental trough on the upper side of the device frame, experimental soil on the upper side of the experimental trough, a flow-retarding trough at the upper end of the experimental trough, a runoff collection trough at the lower end of the experimental trough, a water storage tank installed at the upper end of the device frame, a spray pipe connected to the outside of the water storage tank via a water pump, a nozzle connected to the lower end of the spray pipe, side plates on both sides of the experimental trough, and electric heating tubes embedded inside the side plates.

[0007] Furthermore, the device is mounted on a right-angle bracket structure, and a thermostat is installed on the outer wall of the device frame. The thermostat is electrically connected to the heating element via a wire.

[0008] Furthermore, a drain pipe is connected to the outer wall of the water storage tank, and a flow valve is connected to the outer wall of the drain pipe.

[0009] Furthermore, the flow trough is connected to the inner side of the device frame and is located below the drain pipe, and a drain hole is opened on the outer wall of the flow trough.

[0010] Furthermore, a flexible hose is connected to the outside of the runoff collection trough, and an energy dissipation pool and a runoff measurement pool are connected to the outside of the flexible hose.

[0011] Furthermore, the water inlet of the water pump is connected to the interior of the water storage tank via a pipe, and the water pump is installed on the upper side of the water storage tank.

[0012] Furthermore, the outlet end of the water pump is connected to a water distribution pipe via an outlet pipe, and a support rod is connected to the lower end of the water distribution pipe. Spray pipes are connected to the outer wall of the water distribution pipe at equal intervals.

[0013] Furthermore, the outer end of the spray pipe is connected to a support plate, and the lower end of the support plate is connected to the bottom of the device frame.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. During use, the water storage tank and drainage pipe are used to guide the water into the slow-flow trough when the flow valve is open. Then, through the water outlet on the outside of the slow-flow trough, the water is guided to the experimental soil on the upper side of the experimental tank, simulating the effect of water flow impact on the ground. At the same time, the water pump is started to supply water to the spray pipe through the water outlet pipe and the water distribution pipe. The water then drips from the top to the bottom of the spray pipe onto the experimental soil, thus simulating the effect of external rainy weather and ensuring the integrity of the experimental factors.

[0016] 2. The side plates on both sides of the experimental tank act as baffles for the experimental soil, thereby guiding the lost soil into the runoff collection tank below. Furthermore, the electric heating tubes inside the side plates, connected to a temperature controller via wires, allow for rapid drying of the experimental soil after a simulated water flow impact, restoring its internal dryness. This enables the water erosion experiment to be conducted again, thus shortening the overall erosion experiment time and improving experimental efficiency. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of an embodiment of the present utility model.

[0018] Figure 2 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the structure at point A in the middle.

[0019] Figure 3 This is a top view of the spray pipe structure according to an embodiment of the present utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the experimental tank according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the connection structure between the side plate and the experimental tank in an embodiment of the present invention.

[0022] In the diagram: 1. Frame; 2. Water storage tank; 21. Water pump; 22. Water outlet pipe; 23. Support rod; 24. Water distribution pipe; 3. Spray pipe; 31. Sprinkler head; 4. Support plate; 5. Thermostat; 51. Wire; 52. Heating element; 6. Drain pipe; 7. Flow trough; 71. Water outlet; 8. Experimental tank; 81. Side plate; 9. Runoff collection trough; 91. Flexible hose; 10. Experimental soil. Detailed Implementation

[0023] Reference Figures 1 to 5 As shown, this utility model provides a simulation test device for the mechanical mechanism of erosion gully development, including: a device frame 1, an experimental trough 8 on the upper side of the device frame 1, and experimental soil 10 laid on the upper side of the experimental trough 8, a slow flow trough 7 at the upper end of the experimental trough 8, and a runoff collection trough 9 at the lower end of the experimental trough 8, a water storage tank 2 installed at the upper end of the device frame 1, and a spray pipe 3 connected to the outside of the water storage tank 2 via a water pump 21, and a nozzle 31 connected to the lower end of the spray pipe 3, and side plates 81 on both sides of the experimental trough 8, with electric heating tubes 52 embedded inside the side plates 81.

[0024] In this embodiment, the device frame 1, water storage tank 2, spray pipe 3, temperature controller 5, and experimental tank 8 constitute the main structure of the erosion gully development mechanical mechanism simulation test device involved in this application.

[0025] Among them, the mechanical factors of erosion gully development include hydraulic erosion, wind erosion, freeze-thaw erosion, and the influence of human activities. This application mainly focuses on experimental research on hydraulic erosion.

[0026] Specifically, the heating elements 52 are evenly spaced inside the side plate 81, and the heating elements 52 include an internal heating resistor element and an external metal tube structure.

[0027] It should be noted that multiple electric heating tubes 52 are also embedded at the bottom of the experimental tank 8 to further accelerate the intermittent drying efficiency of the experimental soil 10.

[0028] like Figures 1 to 4 In the device frame 1, a right-angle support structure is provided, and a thermostat 5 is installed on the outer wall of the device frame 1. The thermostat 5 is electrically connected to the heating element 52 via a wire 51. A drain pipe 6 is connected to the outer wall of the water storage tank 2, and a flow valve is connected to the outer wall of the drain pipe 6. A flow trough 7 is connected to the inner side of the device frame 1, and the flow trough 7 is located below the drain pipe 6. A drain hole 71 is opened on the outer wall of the flow trough 7. A flexible hose 91 is connected to the outer side of the runoff collection tank 9. The outer side of pipe 91 is connected to an energy dissipation pool and a runoff measurement pool. The inlet end of water pump 21 is connected to the inside of water storage tank 2 through a pipe, and water pump 21 is installed on the upper side of water storage tank 2. The outlet end of water pump 21 is connected to water distribution pipe 24 through outlet pipe 22, and the lower end of water distribution pipe 24 is connected to support rod 23. Spray pipes 3 are connected at equal intervals to the outer wall of water distribution pipe 24. The outer end of spray pipe 3 is connected to support plate 4, and the lower end of support plate 4 is connected to the bottom of device frame 1.

[0029] Specifically, multiple drain pipes 6 are provided along the length of the slow-flow channel 7, and the water flow is controlled by a flow valve.

[0030] Specifically, the widths of the slow-flow trough 7 and the runoff collection trough 9 are adapted to the width of the experimental trough 8, so that the water flowing out of the slow-flow trough 7 flows completely into the experimental soil 10, and the resulting lost water and soil completely enter the runoff collection trough 9.

[0031] Specifically, the support rod 23 enhances the stability of the water distribution pipe 24, and the support plate 4 ensures that the spray pipe 3 remains in a stable horizontal state.

[0032] It should be noted that the energy dissipation pool and runoff measurement pool connected to the outside of the hose 91, as well as the steps and principles of the entire experimental operation, are consistent with the relevant structures involved in the prior art documents.

[0033] In operation, a water storage tank and drainage pipe are used to guide water into a slow-flow trough when the flow valve is open. Water then flows through outlet holes on the outside of the slow-flow trough to the experimental soil above the experimental tank, simulating the impact of surface water flow. Simultaneously, a water pump is activated to supply water to the spray pipes via outlet and distribution pipes. Water then drips from the nozzles at the lower end of the spray pipes onto the experimental soil, simulating an external rainy environment and ensuring the integrity of the experimental parameters. Side plates on both sides of the experimental tank act as baffles for the soil, guiding any lost soil into the runoff collection trough below. Furthermore, electric heating elements inside the side plates, connected to a thermostat via wires, allow for rapid drying of the soil after each simulated water flow impact, restoring its internal dryness before conducting another water erosion experiment. This shortens the overall erosion experiment time and improves experimental efficiency.

[0034] The erosion gully development mechanical mechanism simulation test device of this utility model can effectively solve the problems of incomplete experimental conditions and long experimental time in existing erosion gully experimental devices. It improves the experimental conditions of erosion gully development mechanical mechanism simulation test on the basis of existing erosion gully development mechanical mechanism simulation test device technology, and shortens the time required for intermittent experiments, thereby improving experimental efficiency.

Claims

1. An apparatus for simulating a mechanical mechanism of rill development, comprising: The device frame (1) is characterized in that: an experimental trough (8) is provided on the upper side of the device frame (1), and an experimental soil body (10) is laid on the upper side of the experimental trough (8). A slow-flow trough (7) is provided at the upper end of the experimental trough (8), and a runoff collection trough (9) is provided at the lower end of the experimental trough (8). A water storage tank (2) is installed at the upper end of the device frame (1), and a spray pipe (3) is connected to the outside of the water storage tank (2) through a water pump (21). A nozzle (31) is connected to the lower end of the spray pipe (3). Side plates (81) are provided on both sides of the experimental trough (8), and an electric heating tube (52) is embedded inside the side plate (81).

2. The experimental device for simulating the mechanical mechanism of erosion gully development according to claim 1, characterized in that, The device frame (1) is designed as a right-angle bracket structure, and a thermostat (5) is installed on the outer wall of the device frame (1). The thermostat (5) is electrically connected to the heating tube (52) through a wire (51).

3. The experimental device for simulating the mechanical mechanism of erosion gully development according to claim 1, characterized in that, The outer wall of the water storage tank (2) is connected to a drain pipe (6), and the outer wall of the drain pipe (6) is connected to a flow valve.

4. The experimental device for simulating the mechanical mechanism of erosion gully development according to claim 1, characterized in that, The slow-flow trough (7) is connected to the inner side of the device frame (1), and the slow-flow trough (7) is located below the drain pipe (6), and a drain hole (71) is opened on the outer wall of the slow-flow trough (7).

5. The experimental device for simulating the mechanical mechanism of erosion gully development according to claim 1, characterized in that, The runoff collection trough (9) is connected to a hose (91) on the outside, and an energy dissipation pool and a runoff measurement pool are connected to the outside of the hose (91).

6. The experimental device for simulating the mechanical mechanism of erosion gully development according to claim 1, characterized in that, The water inlet of the water pump (21) is connected to the interior of the water storage tank (2) through a pipe, and the water pump (21) is installed on the upper side of the water storage tank (2).

7. The experimental device for simulating the mechanical mechanism of erosion gully development according to claim 1, characterized in that, The outlet end of the water pump (21) is connected to the water distribution pipe (24) through the outlet pipe (22), and the lower end of the water distribution pipe (24) is connected to the support rod (23), and the spray pipe (3) is connected to the outer wall of the water distribution pipe (24) at equal intervals.

8. The experimental device for simulating the mechanical mechanism of erosion gully development according to claim 1, characterized in that, The outer end of the spray pipe (3) is connected to a support plate (4), and the lower end of the support plate (4) is connected to the bottom of the device frame (1).

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