Mountain Slope Ground Motion Topography Amplification Effect Induced by Wenchuan Earthquake
详细信息
- 责任者：Luo Yonghong (State Key lab. of Geo-Hazard Prevention and Geo-Envrionment Protection ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Wang Yunsheng
- 刊名：Journal of Mountain Research
- 出版年：2013
- 卷期：31(2)
- 关键词：汶川地震2008 ; Wenchuan earthquake 2008 ; 次生灾害 ; derived disasters ; 四川 ; Sichuan Province
- 页码：p.200-210
- 图表：illus., 1 table, 16 refs.
- 分类号：1800
- issnNo：ISSN1008-2786
- isbnNo：CN51-1516/P
摘要
Physical and mechanical property of rock and soil mass may change across with the different spatial position,so it has different wave impedance characteristics.Under strong earthquake condition,stress wave during its propagation process usually produce strong reflex and refraction effects in the interfaces of different physical properties,and form strong dynamic tension stress and dynamic shear stress,resulting in failure in the rock and soil mass or forming an unique characteristic of dynamic instability.Based on surveying dynamic failure characteristics of rock slope triggered by the "5.12"Wenchuan earthquake and understanding of differences geological media of unstable slope,recurring to parameter test of rock body,theories research,numerical simulation and so on,at the same time combined with analysing characteristic of seismic-dynamic monitoring in different venues media,analysing data of soft and hard lithology combined model tested on the the large-scale shaking table,we research dynamic mutagenic effect of rock and soil media interfaces.The project is expected to reveal rock media dynamic characteristics of representative seismic landslide,dynamic characteristics of media interface,and based on the study it is expected to explore dynamic tension stress and shear stress of media interface impact on slope stability.Research results can provide scientific basis for town construction and major engineering construction in high intensity mountain area.So It has an important significance of earthquake preparedness and disaster reduction.
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