Mechanism and Geo-mechanics models of Landslides triggered by 5.12 Wenchuan Earthquake
(0) Due to the extremely high magnitude, long duration and the complicated geo-environment in disastrous area, the great 512 Wenchuan earthquake not only produce a huge number of landslides and rockfalls, but a series complicated dynamic process are involved in their occurrence also, such as very common loosing and cracking of mountains, unique shatteringsliding, extremely powerful dynamic process of large-scale or individual rock block ejection, long distance motion etc. They are quite different from the characteristics of landslides and rockfalls under general gravity force, and peoples present knowledge is very poor in this field. In order to describe above special dynamic process some terms such as shattering-cracking, shattering-sliding, shattering-falls and ejection were defined in this paper. Combining with the slope structures, a mechanism classification system of strong earthquake-triggered landslide and rockfall are suggested, which includes 5 categories and 14 types. In addition, this paper also analyzes the basic characteristics, dynamic processes and geo-mechanics conceptual models of some typical types, especial the type of shattering-sliding for most large-scales landsides were involved with it. This paper initially reveals the formation mechanism, geo-mechanics models and dynamic features of landslides and rockfalls triggered by great Wenchuan earthquake.
R.Q.Huang Qiang Xu J.J.Huo
State Key Laboratory of Geohazards Prevention and Geoenvironment Protection,Chengdu University of Te State Key Laboratory of Geohazards Prevention andGeoenvironment Protection,Chengdu University of Tec
国际会议
International Symposium and The 7th Asian Regional Conference of IAEG(国际工程地质与环境协会年会暨第七届亚洲工程地质会议)
成都
英文
845-855
2009-09-09（万方平台首次上网日期，不代表论文的发表时间）