Fine water erosion simulation test device for slope channel system, and test method for fine water erosion simulation test device

Abstract

The invention relates to a test device and a test method, which are used for researching the water erosion simulation of a slope channel system. The system comprises a bottom frame, and a slope runoff area and a channel runoff area which are connected with the bottom frame; one end of the bottom frame is connected with a travel wheel set, and the other end of the bottom frame is provided with a steering wheel set and a travel traction rod which is connected with the steering wheel set; the slope runoff area and the channel runoff area are both formed above the bottom frame; the end of the slope runoff area is hinged with the end of the channel runoff area; the other end of the channel runoff area is hinged with the travel wheel set end of the bottom frame; a channel lifting mechanism for controlling the channel runoff area to lift is arranged between the bottom frame and the channel runoff area; and a slope lifting mechanism for controlling the slope runoff area to lift is arranged between the bottom frame and the slope runoff area. The fine water erosion simulation test device has the advantages of manually tamping soil, transplanting plant, automatically adjusting the channel angles, freely moving the whole equipment, shortening a test period, and accurately simulating the water erosion process of soil under different site conditions.

Description

technical field [0001] The present invention relates to a kind of test equipment and its test method for studying the water erosion process of the slope channel system, especially relates to a kind of test area which can make different sizes according to the test requirements, artificially compacted soil, transplanted vegetation, automatic adjustment test The slope of the plot, the free movement of the equipment as a whole, and the shortening of the test cycle can realize accurate simulation of the soil water erosion process under different site conditions, and study the influence of various factors on the soil water erosion process and the response mechanism of the slope channel system under different underlying surface conditions Water erosion fine simulation test device and its test method. Background technique [0002] For a long time, soil erosion has been an important ecological and environmental problem facing our country. The basic research of soil and water conserv...

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Problems solved by technology

[0005] 1) The conditions of the underlying surface in the field are relatively complex. Factors such as soil quality, slope, micro-topography, ant nests, and surface crusts can all have a greater impact on the results of slope water erosion, and it is difficult to separate the quantitative effect of a single factor on the dynamic process of soil erosion;

[0006] 2) It is difficult to accurately control the test conditions, such as the control of the slope, the slope of the channel, and the control of the rainfall and rainfall intensity, which makes it difficult to carry out more accurate comparative tests, which greatly restricts the in-depth study of the soil erosion process and mechanism;

[0007] 3) During the test, only the runoff process and sediment transport process at the outlet of the test plot were observed, and the measurement of the hydrodynamic process in the catchment area was lacking, so it was difficult to reveal the dynamic process of slope hydraulic erosion;

[0008] 4) The test needs to be carried out under natural outdoor rainfall conditions, which are greatly restricted by weather factors. It is difficult to comprehensively study the influence of different rainfall amounts and rainfall intensities on the slope water erosion process. At the same time, field conditions are not conducive to the accurate measurement and Collection, and in the best season of the test, natural rainfall in the field in summer with frequent heavy rains is often accompanied by lightning, which directly threatens the safety of the test personnel;

[0009] 5) The existing test conditions and test equipment are relatively backward, and it is difficult to realize the quantitative observation of the erosion form and erosion amount during the water erosion process of the slope channel system

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