›› 2010, Vol. 31 ›› Issue (S1): 394-397.

• Numerical Analysis • Previous Articles     Next Articles

Initiation process simulation of debris deposit based on particle flow code

HU Ming-jian, WANG Ren, CHEN Zhong-xue, WANG Zhi-bing   

  1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2010-04-25 Online:2010-08-10 Published:2010-09-09

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Abstract:

The mud-rock loosening deposit which has the basic character of granular mixtures is easily turning into debris flow if inspired by rainstorm. Based on the discrete element method and its superiority on round particles moving and mutually affecting and big distortion question research. In order to analyze the relationship between the moisture content and the process of loosening deposit forming in the mud-rock flow, this thesis simulated the process of loosening deposit turning into debris flow under condition of rainfall by using the two-dimensional particle flow code software-PFC2D. Result showed that the particle would start moving and accelerating then caused the displacement increasing, induced the chain destroy process and mechanism of landslide and debris flow when the water content surpassing the critical moisture content.

Key words: debris flow, loosening deposit, particle flow code, critical water content, initiation

CLC Number: 

  • TV 144
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