Three–dimensional Analysis of Seismic Stability and Failure Process of Lijie Landslide in Gansu Province, China

The seismic stability and failure process of Lijie landslide is analyzed using the explicit finite element method with dynamic and large deformation modes. Firstly, the Lijie landslide seismic stability is analyzed with two–dimensional plane strain assumption. Then, a three–dimensional mountain model is established via the point cloud data, and three–dimensional landslide failure process analysis is processed to determine the maximum sliding distance and failure range of the landslide. The results obtained by the explicit finite element, three–dimensional and large deformation method in this paper is more accurate than that of the two–dimensional and small deformation method. This study will propose the theoretical guidance for earthquake resistance and the prevention of earthquake–induced landslide disaster.