Abstract：In order to solve the loess landslide problem in the railway project, this paper takes a typical loess landslide for example, analyzes the deformation behaviour, inducing factor and formation mechanism under rainfall condition, and studies more about the deformation mechanism of loess landslides under rainfall condition.Research conclusions:(1)Because the loess strength index decreases with the increasing of water content, the Lingtai slope stability has a direct relationship with the moisture content of the slope under the influence of the rainfall condition. (2)Through the finite element simulation of the landslide under the rainfall condition, it is concluded that rainfall infiltration of Lingtai landslide is the process that the effect of rainfall on matrix suction gradually reduces and expands. (3) Combining with actual exploration data, the study of the mechanical behavior of landslide's stress and strain in natural state and saturated state is taken to seek mechanical mechanism of landslide instability, destruction and slip. (4) The research results can provide theoretical basis for prevention of the loess landslide.
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2014, Vol. 31 
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