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Journal of Mountain Science

, Volume 8, Issue 4, pp 619–628 | Cite as

Numerical investigation on the initiation mechanism of debris-flow under rainfall

  • Xiaobing LuEmail author
  • Tianli Ye
  • Peng Cui
  • Kaiheng Hu
  • Xiaoqing Chen
Article

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.

Keywords

Debris-flow Initiation mechanism Rainfall Numerical simulation 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Xiaobing Lu
    • 1
    Email author
  • Tianli Ye
    • 1
  • Peng Cui
    • 2
  • Kaiheng Hu
    • 2
  • Xiaoqing Chen
    • 2
  1. 1.Institute of MechanicsChinese Academy of ScienceBeijingChina
  2. 2.Institute of Mountain Hazards and EnvironmentChinese Academy of ScienceChengduChina

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