Numerical investigation on the initiation mechanism of debris-flow under rainfall |
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| Authors: | Xiaobing Lu Tianli Ye Peng Cui Kaiheng Hu Xiaoqing Chen |
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| Institution: | (1) State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection, Chengdu University of Technology, 610059 Chengdu, China |
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| Abstract: | Rainfall is an important factor to trigger the debris flow. Numerical simulation on the responses of slopes and the initiation
of debris flow under rainfall was processed by using the software FLAC2D based on the soil parameters in Weijia Gully, Beichuan
County, Sichuan Province, China. The effects of the slope angle, rainfall intensity, soil parameters on the developments of
the stress and pore pressure and deformation of the slope were studied. It indicates that large displacements of the slope
are mainly located near the slope toe. With the increase of the rainfall intensity the stability of the slope decreases and
so the debris-flow is easy to occur. |
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