Natural Hazards

, Volume 64, Issue 1, pp 887–902 | Cite as

Experimental and numerical analysis on the responses of slope under rainfall

  • X. B. Lu
  • T. L. Ye
  • X. H. Zhang
  • P. Cui
  • K. H. Hu
Original Paper

Abstract

Rainfall is an important factor to trigger the slope failure such as landslides and debris flows. First, the relationship between rainfall duration with the initiation of debris flow and rainfall intensity was mainly studied by the series tests in a box model. Then, the rainfall induced responses of slopes and the initiation of slope failure were simulated by using the software FLAC2D based on the soil parameters in Weijia Gully, Beichuan County, Sichuan Province. The effects of the slope angle, rainfall intensity, soil parameters on the development of the stress, and pore pressure in the soil of the slope were analyzed. It indicates that largest displacements in the slope are mainly located near the toe. With the increase of the rainfall intensity, the effective stress in the slope decreases and the displacement increases.

Keywords

Debris flow Landslide Initiation of debris flow Rainfall 

Notes

Acknowledgments

This paper is supported by National Basic Research Program of China “Activity characteristics and formation rules of secondary mountain hazard of earthquake”(No. 2008CB425802) and Key Program of Chinese Academy of Sciences (No.KZCX2-YW-302-02).

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • X. B. Lu
    • 1
  • T. L. Ye
    • 1
  • X. H. Zhang
    • 1
  • P. Cui
    • 2
  • K. H. Hu
    • 2
  1. 1.Institute of MechanicsChinese Academy of ScienceBeijingChina
  2. 2.Institute of Mountain Hazards and EnvironmentChinese Academy of ScienceChengduChina

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