Abstract
A numerical model of a loess landslide is established by using numerical simulation method to simulate the stability of the loess landslide under earthquake load. The results show that the loess landslide is stable before the earthquake and instable under the earthquake. The horizontal displacement and shear strain increment of the front part of the sliding slope increase obviously under the earthquake. At the same time, the sensitivity analysis of the seismic stability of the loess landslide is carried out by using the orthogonal test design method. The results show that the seismic action is the second factor to the internal friction angle of the sliding zone soil. With the increase of the seismic intensity, the decrease trend of the stability coefficient increases.
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