Influence of Rainfall Infiltration on Landslide Treatment Engineering

Abstract:

Rainfall infiltration can induce landslides and influence engineering treatment effects. With a landslide uncounted in expressway construction in Shanxi province as an example, the bad effect of water was analyzed. Based on changes in soil strength caused by rainfall infiltration and shear experiments of undisturbed and water-saturated sliding zone soil under several conditions, the calculation parameters of soil were determined. Distribution of the maximum principal stress and shear stress inside the supported landslide before and after the rain was calculated through FEM numerical simulation and then deformation and failure mechanism of landslide was analyzed; the results reveal that for the supported landslide, the principal stress is mainly caused by gravity before and after the rain, meanwhile infiltration can induce increase in instantaneous strain and dramatic change in maximum shearing stress which is focused on the sliding surface adjacent to the bedding plane. As mentioned above, the drainage of surface water and groundwater in landslide treatment can delay landslide deformation effectively.

• Periodical: Advanced Materials Research (Volume 709)
• Pages: 936-941
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.709.936
• Online since: June 2013
• Authors: Xing Hua Xiang, Zhi Yuan Li, Xiao Ting Zhang
• Keywords: Drainage Engineer, Landslide, Rainfall, Sliding Zone Soil, Stress Distribution

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