Simulation analysis method for rainfall-induced slope geological disaster scene

Abstract

The invention discloses a rainfall-induced slope geological disaster scene simulation analysis method, and the method comprises the following steps: reconstructing a three-dimensional model of a slope scene based on oblique photography data to obtain earth surface contour line data; processing earth surface contour line control points, and establishing a boundary model of the slope; generating a slope rock and soil mass point set in the range of the boundary model, and achieving the slope scene simulation; carrying out ground stress balance analysis under the self-weight acting force by adopting a material point method; analyzing historical rainfall data of the slope site to obtain distribution characteristics of rainfall intensity, duration and rainfall; randomly generating water quality points above the slope rock-soil body area to realize rainfall scene simulation; calculating the stress seepage coupling response of the slope rock-soil body under the infiltration condition in different time steps by adopting a two-phase material method, and realizing the whole process analysis of rainfall-induced slope geological disaster evolution; wherein the infiltration and surface runoff process of rainfall in the slope rock-soil body is fully considered. The method has the advantages of simple operation, advanced technology and high calculation precision.

Description

technical field [0001] The invention belongs to the technical fields of geotechnical engineering such as geological disasters, water conservancy, and transportation, and in particular relates to a method for analyzing a scene of a rainfall-induced slope geological disaster, and is especially suitable for analyzing the whole process of evolution of a rainfall-induced slope geological disaster. Background technique [0002] With the implementation of the national strategy, water conservancy and hydropower, transportation, civil engineering and other projects are being constructed in full swing in mountainous areas. However, the problem of geological disasters in mountainous areas of our country is very prominent, especially the slope geological disasters induced by rainfall, which have caused huge losses to the safety of people's lives and property, and brought a huge threat to a large number of projects under construction and to be built, which has become a constraint for the ...

AI Technical Summary

Problems solved by technology

However, most of the existing studies use model tests to conduct the whole process of rainwater movement in the air—acting on the slope surface—rock and soil seepage in potential unstable areas—rainwater flowing out of unstable areas, but model tests have limitations in scale effects Therefore, how to develop a universal simulation method for the scene characteristics of rainfall-induced slope geological hazards is an important and difficult point in the prediction and prevention of slope geological hazards

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