成都理工大学学报（自然科学版）2013，Vol.40Issue(3)：242-249,8.DOI:10.3969/j.issn.1671-9727.2013.03.03
“4·20”芦山地震的构造破裂与发震断层
Research on tectonic fracturing and causative fault of Lushan earthquake in Sichuan, China
摘要
Abstract
This article studies the tectonic rupture and deformation characteristics of the Lushan earthquake (Ms 7.0) occurred in Sichuan on April 20,2013 and clarifies that the factor which causes 7.0 Ms earthquake is the reverse faulting and right-lateral strike-slip movement of the NE trending Dachuan-Shuangshi fault.The biggest displacement on the fault plane reaches 1.51 m.The epicenter is not in Longmen Country with serious seismic hazards,but in the Shuangshi-Taiping area where the seismic fault goes through.The main factor caused earthquake disasters anomalously in Longmen Country is the strong site effect of the relatively thick Quaternary in this basin and the strength of the buildings is insufficient.The earthquake is an inevitable result due to the crustal stress adjustment and the stress-deformation of crustal rock mass developing in the progressive stage of the Longmenshan Fault Zone.The trends of the crustal rupture propagation direction develop toward the Longmenshan central fault.关键词
芦山地震/构造破裂/地震断层Key words
Lushan earthquake/ tectonic rupture/ seismic fault分类
天文与地球科学引用本文复制引用
李渝生,王运生,裴向军,罗永红..“4·20”芦山地震的构造破裂与发震断层[J].成都理工大学学报（自然科学版）,2013,40(3):242-249,8.基金项目
地质灾害防治与地质环境保护国家重点实验室重点团队研究项目 （）
