Experimental and numerical analysis on the responses of slope under rainfall

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• 作者：X. B. Lu (1) xblu@imech.ac.cn
  T. L. Ye (1)
  X. H. Zhang (1)
  P. Cui (2)
  K. H. Hu (2)
• 关键词：Debris flow – ; Landslide – ; Initiation of debris flow – ; Rainfall
• 刊名：Natural Hazards
• 出版年：2012
• 出版时间：October 2012
• 年：2012
• 卷：64
• 期：1
• 页码：887-902
• 全文大小：1,016.6 KB
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• 作者单位：1. Institute of Mechanics, Chinese Academy of Science, Beijing, 100084 China2. Institute of Mountain Hazards and Environment, Chinese Academy of Science, Chengdu, 610041 China
• ISSN：1573-0840

文摘

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.