Slope stability dynamic evaluation method based on rainfall seepage path and moisture content change

Abstract

The invention discloses a slope stability dynamic evaluation method based on rainfall seepage path and a moisture content change, which comprises the following steps: acquiring slip band soil on site,performing a physical and mechanical strength test on the slip band soil, and recording corresponding physical and mechanical parameters; utilizing the collected slip band soil as a slope model to beevaluated and carrying out rainfall physical simulation on the slope model to be evaluated; and based on the physical and mechanical parameters, the moisture content change condition and the pore water pressure change condition, establishing a slope stability dynamic analysis model based on the rainfall seepage path and the moisture content change. According to the method, the path of rainwater infiltrating into the slope body is studied, it is speculated that rainwater infiltrates downwards along the cracks, the cracks are softened step by step, and crack development is promoted. And the seepage path can be sectionally assigned to simulate the process that rainwater flows in and infiltrates along the cracks to gradually soften the cracks to promote penetration. The calculation result ismore accurate and practical, and the defects that a traditional overall strength reduction method is large in calculation error and difficult to quantitatively evaluate and predict the slope deformation trend can be overcome.

Description

technical field [0001] The invention belongs to the technical field of slope or side slope stability analysis influenced by rainfall seepage, and in particular relates to a dynamic evaluation method for slope stability based on rainfall seepage path and water content change. Background technique [0002] The slope of rock or soil is affected by factors such as river erosion, groundwater activity, earthquakes, and human activities. The phenomenon that the slope slides down in whole or in part along a certain shear sliding surface under the action of gravity is called landslide. Landslide geological disasters have the characteristics of unpredictable, great harm, and high cost of treatment projects. Landslides often cause huge casualties and property losses. On October 9, 1963, a huge landslide occurred near the dam on the left bank of the Wagan Reservoir in Italy. The landslide not only damaged the reservoir, making the reservoir unusable, but also destroyed many downstream ...

AI Technical Summary

Problems solved by technology

For example, the early built Shenyang-Dalian Expressway, Shenshan Expressway, etc., all suffered landslides after opening to traffic, causing huge economic losses and adverse social impacts

Images