Abstract
The landslide is a kind of natural disaster caused by slope instability. Due to its wide distribution, frequent occurrence, and damaging effects, many countries in the world suffer from it. Sichuan Province in China is a landslide-prone area since it locates in the seismic zone. In this paper, the Morgenstern-Price method is used to analyze the stability of a landslide in Sichuan Province, and heavy rainfall is also simulated to analyze the landslide stability under such conditions, which can provide assistance for geological disaster prevention in the future.
Highlights
The landslide, one of the most common natural disaster, is the downslope movement of rock and soil under gravity along a certain weak surface
By reference to the table of Implementation of Geological Hazard Prevention in Sichuan Province in 2020, only the rainfall factor was selected as the landslide inducing factor
According to the analysis that the rock property of the landslide point is the Xujiahe Formation of the Upper Triassic [13] and that the landslide point is located in the northwestern part of Sichuan Province [14], it can be known that the aquifer is composed of the sandstone of Cretaceous and Upper Triassic Xujiahe Formation interbedded with shale, mudstone and coal seam, which is thick and stable
Summary
The landslide, one of the most common natural disaster, is the downslope movement of rock and soil under gravity along a certain weak surface. It is caused by natural factors such as earthquakes and rainfall, as well as human activities. Sichuan Province, with complete stratum lithology, complex geological structure and diverse geological environments, is one of the provinces with high risk of geological disasters. It suffered from the “May 12” Wenchuan earthquake in 2008, which caused adverse effect on the geological environment in the earthquake areas.
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