›› 2007, Vol. 28 ›› Issue (S1): 155-159.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on eroded start mechanism of channel debris flow

HE Si-ming1, 2, WU Yong1, 2, LI Xin-po1, 2   

  1. 1. Key laboratory of Mountain Hazard and Surface Process, Chinese Academy of Sciences, Chengdu 610041, China; 2. Chengdu Research Institute of Environment and Disaster in Mountationous Regions Chinese Academy of Sciences, Chengdu 610041, China
  • Received:2007-05-30 Online:2007-10-25 Published:2014-03-28

Abstract: The viscous debris flow has a very strong eroded ability. It can erode a large amount of loose matters by its constantly erosion or lateral erosion and take them away during its flowing process, which makes it become more dangerous. According to the debris flow constitutive model and soil shear strength theory, take the upper bound theorem used in limit analysis as measure, and under the condition of assuming the erosion surface as arc, the startup mechanism of corroding to the ditch is studied. Then the corresponding calculating formula and judging criteria are suggested. At last, the influence of some factors on the erosion start velocity, such as the gravity, the falling gradient, the strength of the soil and so on, is discussed intensively.

Key words: upper limit theorem, debris flow, eroded start

CLC Number: 

  • TU 458
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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