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Journal of Mountain Science

, Volume 8, Issue 2, pp 200–210 | Cite as

Mechanism and geo-mechanics models of landslides triggered by 5.12 Wenchuan Earthquake

  • Runqiu HuangEmail author
  • Qiang Xu
  • Junjie Huo
Article

Abstract

Due to the extremely high magnitude, long duration, and the complicated geo-environment in the disaster area, the great 5.12 Wenchuan Earthquake not only produced a huge number of landslides and rockfalls, but also involved complicated dynamic processes. These processes are quite different from the characteristics of landslides and rockfalls under general gravitational force, and presently human knowledge is very poor in this field. In order to describe the special dynamic processes, some terms such as shattering-cracking, shattering-sliding, shattering-falls and ejection are defined in this paper. Combined with slope structures, a mechanism classification system of strong earthquake-triggered landslide and rockfall is suggested, which is divided into 5 categories and 14 types. This paper also analyzes the basic characteristics, dynamic processes and geo-mechanics conceptual models of some typologies, especial the type of shattering-sliding for most large-scales landsides. This paper initially reveals the formation mechanism, geo-mechanics models and dynamic features of landslides and rockfalls triggered by the great Wenchuan Earthquake.

Keywords

5.12 Wenchuan Earthquake Landslide Rockfall Geo-mechanics model 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.State Key Laboratory of Geohazards Prevention and Geoenvironment ProtectionChengdu University of TechnologyChengdu, SichuanChina

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