STUDY ON THE GEOMECHANICAL MODEL OF LANDSLIDE WITH LOW DIP ANGLE STRATA STRUCTURE:TAKING FENGDIAN LANDSLIDE AS AN EXAMPLE

WANG Zhi-hua; DU Ming-liang; GUO Zhao-cheng; JIA Wei-jie

Volume 18 Issue 2

Jun. 2012

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WANG Zhi-hua, DU Ming-liang, GUO Zhao-cheng, et al., 2012. STUDY ON THE GEOMECHANICAL MODEL OF LANDSLIDE WITH LOW DIP ANGLE STRATA STRUCTURE:TAKING FENGDIAN LANDSLIDE AS AN EXAMPLE. Journal of Geomechanics, 18 (2): 97-109, 186.

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STUDY ON THE GEOMECHANICAL MODEL OF LANDSLIDE WITH LOW DIP ANGLE STRATA STRUCTURE:TAKING FENGDIAN LANDSLIDE AS AN EXAMPLE

China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China

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Received: 2011-12-14
Published: 2012-06-01

Abstract

Abstract

On the basis of research at home and abroad, starting from the landslide mechanism establish geomechanical model of landslides with low dip angle strata, all the parameters in the model, such as landslide size, slip angle, back edge ripping slot seeper depth and so on, were obtained by digital landslide technology and fields investigation and put them into the model formula then landslide critical friction coefficient can be obtained, and landslide total down-slide and total resistance slippery force shall be get. This is the first putting forward the concept of critical friction coefficient and calculating methods, and the coefficient directly related to the slippery ability or stability of the landslide. Analysis shows that the critical friction coefficient and landslide sliding body size (the length and width of the sliding surface), sliding plane obliquity are positive correlation, with landslide weight inversing relationship. The influence of the dip angle of the back wall changing in 60°-90° on slippery ability of the landslide with low angle strata is very weak.
- landslide with low-angled stratofabric structure,
- formation mechanism,
- geomechanical model,
- digital landslide technology,
- critical friction coefficient

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References(21)

References

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