Seepage Characteristics and Stability Evaluation of Landslide Cover Considering Rain Infiltration
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Abstract:
Rain infiltration is an important factor on the stability of slope in the reservoir area. In order to analyze the effects of rain infiltration on the Shangtianzhen landslide body in the upstream reservoir area of Kala hydropower station in the Yalong River Basin, a two-dimensional unsaturated and saturated seepage field model was developed based on a typical profile of the Shangtianzhen landslide body. The finite element method was used to simulate the rain infiltration process. The simulation results were used to analyze the seepage characteristics and stress distribution of the landslide body under heavy rain infiltration before and after impounding, and to evaluate the stability and effect of protective measures of the slope. The results indicated that rain infiltration can reduce the slope stability and may even cause slope instability.
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