Simulation device capable of observing multi-dimensional soil loss process of karst slope

Abstract

The simulation device capable of observing the multi-dimensional soil loss process of the karst slope comprises a soil tank support and a soil tank body, the soil tank body is obliquely arranged on the soil tank support, and an interface notch, an in-soil notch and a slope notch are formed in the bottom, the middle and the upper portion of the tank wall at the lower end of the soil tank body respectively. An interface flow collecting tank, an interflow collecting tank and a slope flow collecting tank are fixed to the positions, corresponding to the interface notch, the interflow notch and the slope notch, of the outer wall of the soil bin body respectively, drainage pipes are led out of the bottoms of the interface flow collecting tank, the interflow collecting tank and the slope flow collecting tank respectively, and holes are formed in the bottom of the soil bin body in a distributed mode. An underground leakage collecting tank is further arranged under the soil bin body, drainage pipes are led out of the bottom of the underground leakage collecting tank, and the lower end of each drainage pipe extends into the corresponding independent flow collecting barrel. The problem that experimental conditions such as porosity of a traditional experimental device are difficult to control and adjust is solved. Belongs to the field of soil erosion experiments.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of simulation devices of observable karst slope multidimensional soil loss process, belong to soil erosion experimental field. BACKGROUND

[0002] Soil erosion not only leads to land productivity decline, affects agricultural production and food security, but also causes a series of ecological and environmental problems such as soil and water loss, river channel siltation, and reservoir capacity reduction. In addition, soil erosion also carries a large amount of nutrients and pollutants into water bodies, posing a serious threat to water quality.

[0003] Before the appearance of soil erosion soil flume, researchers mainly studied soil erosion problems through field observation and model simulation methods. However, these traditional methods have some limitations. Field observation is often limited by natural conditions, making it difficult to control experimental conditions, and the repeatability and accuracy of experimental results are low. Although model simulation can predict the occurrence and development of soil erosion to some extent, the accuracy and reliability of the model are often affected by data quality and model parameters. SUMMARY

[0004] The utility model provides a kind of simulation devices of observable karst slope multidimensional soil loss process to solve the problems such as the difficulty in controlling and adjusting experimental conditions such as porosity of traditional experimental devices, and the accuracy and reliability of the model are often affected by data quality and model parameters.

[0005] To solve the above problems, a simulation device for observing the multi-dimensional soil loss process of karst slope is proposed, which includes a soil flume support and a soil flume body. The soil flume body is inclined and placed on the soil flume support, and the bottom, middle, and upper parts of the lower end of the soil flume body are provided with interface grooves, soil grooves, and slope grooves, respectively. The interface flow collection groove, soil flow collection groove, and slope flow collection groove are fixedly installed on the outer wall of the soil flume body corresponding to the interface grooves, soil grooves, and slope grooves, respectively. The bottoms of the interface flow collection groove, soil flow collection groove, and slope flow collection groove are respectively connected to the drainage pipes. The bottom of the soil flume body is distributed with holes for simulating rock cracks. A subsurface leakage collection groove is placed directly below the soil flume body. The bottom of the subsurface leakage collection groove is also connected to a drainage pipe. The lower end of each drainage pipe extends into a separate flow collection barrel.

[0006] In the aforementioned simulation device, a partition plate with a height lower than the edge of the groove body is fixedly installed in the groove body at the upper end of the soil flume body to divide the groove body into an upper water tank and a lower soil flume. A cushion plate with a height lower than the partition plate is also fixed in the water tank. One end of the water supply pipe extends into the upper region of the water tank, and the other end of the water supply pipe is connected to a water source with a certain water pressure. The water pressure needs to be sufficient to send water into the water tank, but it cannot be too high to avoid excessive impact.

[0007] In the foregoing simulation device, the upper ends of the interface flow collecting groove, the soil flow collecting groove and the slope flow collecting groove are detachably provided with cover plates to reduce the influence of rainfall on the experimental results during the simulation rainfall experiment.

[0008] In the foregoing simulation device, the bottom of the soil groove is provided with holes for simulating rock cracks, and the lower surface of the soil groove body is welded with sealing pipes corresponding to the holes, the inner diameter of the sealing pipe is greater than or equal to the diameter of the hole, the lower end of the sealing pipe is provided with external threads and matched with a nut, and according to the experimental requirements, a specified number of nuts are installed to close a specified number of holes, so as to adjust the porosity as required.

[0009] Compared with the prior art, the soil groove bottom external pipeline and the plug design simplify the process of adjusting the fissure degree; the soil groove and the water tank are combined to perform artificial rainfall simulation spraying experiment and slope flow water simulation scouring experiment; and the detachable collecting plate cover plate can avoid the influence of rainfall on the experimental results in a more convenient way. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural schematic diagram of the utility model;

[0011] Figure 2 is a local structure schematic diagram of the hole corresponding sealing pipe. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be further described in detail below combined with the drawings, and it should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0013] EMBODIMENT

[0014] Referring to the drawings Figure 1 and Figure 2The embodiment is directed to the improvement of the binary erosion and loss device of the karst slope soil, and specifically comprises a simulation device for observing the multi-dimensional soil loss process of the karst slope, which comprises a soil tank support 1 and a soil tank body 2, the soil tank body 2 is obliquely arranged on the soil tank support 1, four pulleys can be installed at the four corners of the bottom of the soil tank support 1 for movement, the bottom, the middle and the upper part of the lower end tank wall of the soil tank body 2 are respectively provided with an interface groove 21, a soil middle groove 22 and a slope surface groove 23, the interface flow collection groove 3, the soil middle flow collection groove 4 and the slope surface flow collection groove 5 are respectively fixedly installed on the outer wall of the soil tank body 2 corresponding to the interface groove 21, the soil middle groove 22 and the slope surface groove 23, and the bottoms of the interface flow collection groove 3, the soil middle flow collection groove 4 and the slope surface flow collection groove 5 are respectively connected with the drain pipes 6, the lower ends of the drain pipes 6 are respectively inserted into the separate flow collection barrels 7, and the rock-soil interface flow, the soil middle flow and the slope surface flow are respectively collected, and the upper ends of the interface flow collection groove 3, the soil middle flow collection groove 4 and the slope surface flow collection groove 5 are detachably provided with the cover plates for reducing the influence of the rainfall on the experimental results during the simulation rainfall experiment.

[0015] The height of the isolation plate 24 is lower than the edge of the tank body, so that the tank body is divided into the upper water tank 25 and the lower soil tank 26, the water tank 25 is used for simulating the scouring experiment, the height of the energy attenuation plate 27 is lower than the isolation plate 24, one end of the water supply pipe 8 is inserted into the upper region of the water tank 25, the energy attenuation plate 27 is used for reducing the additional kinetic energy generated when the water is poured into the soil tank 26 by using the water supply pipe 8, when the water tank 25 is filled with water, the water flushes the soil along the contact part of the water tank 25 and the soil tank 26, and the simulation scouring experiment is completed, the other end of the water supply pipe 8 is connected with the water source with a certain water pressure, the water pressure needs to be sufficient to send the water into the water tank 25, and the water pressure cannot be too large to avoid causing a large impact.

[0016] The bottom of the soil tank 26 is provided with the holes 28 for simulating the unique rock fissures in the karst area, the underground leakage simulation is realized, the sealing pipes 11 are welded and fixed on the lower surface of the soil tank body 2 corresponding to the holes 28, the inner diameter of the sealing pipe 11 is greater than or equal to the diameter of the hole 28, the lower end of the sealing pipe 11 is provided with the external thread and is matched with the corresponding nut 9, according to the experimental requirements, the specified number of nuts 9 are installed to close the specified number of holes 28, so that the porosity is adjusted according to the requirements, and the underground leakage collection groove 10 is arranged below the soil tank body 2, the bottom of the underground leakage collection groove 10 is also connected with the drain pipe 6, and the lower end of the drain pipe 6 is inserted into the separate flow collection barrel 7.

[0017] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A simulation device capable of observing the multi-dimensional soil loss process on karst slopes, characterized by: The invention comprises a soil trough support (1) and a soil trough body (2), wherein the soil trough body (2) is tiltedly arranged on the soil trough support (1), and the bottom, middle and upper parts of the trough wall of the lower end of the soil trough body (2) are respectively provided with an interface notch (21), a soil mid-notch (22) and a slope surface notch (23), and an interface flow collecting trough (3), a soil mid-flow collecting trough (4) and a slope surface notch (23) are respectively fixedly installed on the outer wall of the soil trough body (2) at the corresponding positions of the interface notch (21), the soil mid-notch (22) and the slope surface notch (23). A flow collection trough (5) is provided, and drainage pipes (6) are respectively led out from the bottoms of the interface flow collection trough (3), the mid-soil flow collection trough (4) and the slope flow collection trough (5). Holes (28) for simulating rock cracks are distributed at the bottom of the soil trough body (2). An underground leakage collection trough (10) is also arranged directly below the soil trough body (2). A drainage pipe (6) is also led out from the bottom of the underground leakage collection trough (10), and the lower end of each drainage pipe (6) extends into a separate flow collecting barrel (7).

2. A simulation device capable of observing multi-dimensional soil loss process in karst slopes according to claim 1, characterized in that: An isolation plate (24) whose height is lower than the edge of the trough body is fixedly installed in the trough body at the upper end of the soil trough body (2) to separate the trough body into an upper water trough (25) and a lower soil trough (26). An energy-reducing plate (27) whose height is lower than the isolation plate (24) is also fixed in the water trough (25). One end of the water supply pipe (8) extends into the upper area of ​​the water trough (25), and the other end of the water supply pipe (8) is connected to a water source with a certain water pressure.

3. The simulation device for observing multi-dimensional soil loss process in karst slopes according to claim 1, characterized in that: Cover plates are detachably mounted on the upper ends of the interface flow collection trough (3), the mid-soil flow collection trough (4) and the slope flow collection trough (5).

4. The simulation device for observing multi-dimensional soil loss process in karst slopes according to claim 2, characterized in that: The bottom of the soil trough (26) is provided with holes (28) for simulating rock cracks. A sealing tube (11) is welded and fixed to the lower surface of the soil trough body (2) at the corresponding holes (28). The inner diameter of the sealing tube (11) is greater than or equal to the diameter of the hole (28), and the lower end of the sealing tube (11) has an external thread and is equipped with a matching nut (9). According to experimental needs, a specified number of nuts (9) can be installed to seal a specified number of holes (28), thereby achieving the purpose of adjusting the porosity according to needs.

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