Slope runoff-considered rainfall infiltration simulation experiment system

Abstract

The invention discloses a slope runoff-considered rainfall infiltration simulation experiment system. The experiment system includes a flow guiding tank, a water pressure tank is arranged at the upstream end of the flow guiding tank, a detection section is arranged at the middle part of the flow guiding tank, a dropper is vertically arranged at the upstream position of the detection section, a flow velocity measurement system is arranged in the detection section, a detection port is arranged at the tank bottom of the detection section, a detection container is arranged below the detection port, the inner chamber of the detection container is used for containing soil to be tested, the upper port of the detection container is in detachable abutting connection with the detection port, and thedetection container has an observation wall made of a transparent material; and the experiment system also comprises a flow velocity control system for controlling the flow velocity in the flow guiding tank and a runoff depth control structure used for controlling the runoff depth in the flow guiding tank. The experiment system can conveniently study the interference influences of soil infiltration on the above runoff and the influence rule of the change of the runoff velocity and the water depth on the soil infiltration, and has the advantages of simplicity in implementation, convenience inoperation, quickness in adjustment, and reliable structure.

Description

technical field [0001] The invention relates to the field of soil seepage test research, in particular to a rainfall infiltration simulation experiment system considering slope runoff. Background technique [0002] The infiltration of saturated / unsaturated soil is an important dynamic process that needs to be considered in the process of rainfall-induced landslides, irrigation of farmland canals and seepage recharge of rivers. Taking rainfall-induced landslides as an example, landslides are the most common form of geological and natural disasters around the world, and rainfall-induced landslides are the main factor. my country is undergoing high-speed construction, which leads to more frequent landslide disasters, especially in southwest mountainous areas. The threat of landslides has caused many lives and property damage, and has limited the development of social construction and production, so the evaluation of the impact on slope stability is particularly important; [00...

AI Technical Summary

Problems solved by technology

However, the general rainfall model ignores the impact of rainfall runoff, and the models that consider rainfall runoff generally only consider runoff as the increased water head on the slope, but the flow velocity, another important physical quantity of runoff, is not considered. Rainfall infiltration has an important impact, and we need to include it in the process of analyzing rainfall infiltration, otherwise it will lead to errors in our analysis of slope stability

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