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

CONG Kai; MA Zongyuan; LI Ruidong

doi:10.12401/j.nwg.2022029

Northwestern Geology > 2023 > 56(2): 283-291. > DOI: 10.12401/j.nwg.2022029

CONG Kai, MA Zongyuan, LI Ruidong. Three–dimensional Analysis of Seismic Stability and Failure Process of Lijie Landslide in Gansu Province, China[J]. Northwestern Geology, 2023, 56(2): 283-291. DOI: 10.12401/j.nwg.2022029

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

1.
Gansu Geology Environment Monitoring Institute, Lanzhou 730050, Gansu, China
2.
Guizhou Communications Polytechnic, Guiyang 551400, Guizhou, China

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Received Date: April 19, 2022
Revised Date: July 19, 2022
Available Online: October 12, 2022

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Abstract

Abstract

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.
- earthquake,
- landslide,
- progressive failure process,
- large deformation,
- explicit finite element method

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