Fine simulation test device and fine simulation test method for slope water erosion

Abstract

The invention discloses a fine simulation test device and a fine simulation test method for slope water erosion. The fine simulation test device comprises an underframe provided with trundles and a test soil groove connected with the underframe, the test soil groove is arranged above the underframe, one end of the test soil groove is hinged to one end of the underframe, and a water tank matched with the test soil groove is arranged at the other end of the test soil groove. A hydraulic rod is arranged between the test soil groove and the underframe, an equalization pond is arranged between thetest soil groove and the water tank, the equalization pond is communicated with the water tank through a water conveying pipe, the water conveying pipe and a water pump are arranged on one side of the water tank, a water discharging pipe is communicated with the lower portion of the water tank, a three-dimensional laser scanner is arranged in front of the test soil groove, a railfall device is arranged right above the test soil groove, and a flow collecting opening connected with the test soil groove is arranged at the end of the test soil groove hinged to the underframe. The fine simulation test device and the fine simulation test method for the slope water erosion have the advantages of being capable of controlling slope soil bulk density, vegetation types and cover degree manually, simulating soil water erosion conditions under different site conditions, and studying influences and response theories of all factors on soil water erosion under different underlying surface conditions.

Description

technical field [0001] The present invention relates to a kind of test equipment and its test method for researching slope surface water erosion, in particular to a kind of test area which can make different sizes according to test requirements, fill soil with different particle sizes, and artificially control slope soil bulk density and vegetation type and coverage, so as to realize accurate simulation of soil water erosion under different site conditions, and study the influence and response mechanism of various factors on the soil water erosion process under different underlying surface conditions. The slope water erosion fine simulation test device and its test method. Background technique [0002] At present, the known soil water erosion simulation test method is to establish a test plot in the field. On a slope with relatively uniform soil quality and a relatively consistent slope, measure rectangular plots with different slope lengths and widths according to the test r...

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Problems solved by technology

[0003] However, the conditions of the underlying surface in the field are relatively complex, and 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; At the same time, due to the difficulty of precise control of the test conditions, it is difficult to carry out more accurate comparative tests, which greatly restricts the in-depth study of the soil erosion process and mechanism; during the test, only the runoff process and the sediment transport process at the exit of the test plot were observed. , the lack of measurement of the hydrodynamic process in the catchment area, it is difficult to reveal the dynamic process of slope hydraulic erosion; the test needs to be carried out under natural rainfall conditions outdoors, which is greatly restricted by weather factors, and it is difficult to comprehensively study different rainfall and rainfall The impact of strength conditions on the slope water erosion process, and the field conditions are not conducive to the accurate measurement and collection of test parameters; limited by the existing test conditions and test equipment, it is difficult to quantify the erosion form and erosion amount of the slope water erosion process to observe

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