成都理工大学学报（自然科学版）2017，Vol.44Issue(6)：649-658,10.DOI:10.3969/j.issn.1671-9727.2017.06.02
1786年磨西地震触发的摩岗岭滑坡演化过程与成因机理
Discussion on the formation evolution and genetic mechanism of Mogangling landslide triggered by Moxi earthquake, Sichuan, China
摘要
Abstract
The characteristics of Mogangling landslide,triggered by Moxi earthquake in 1786,and its formation and evolution are studied by means of data collection,field investigation,3D-modeling,high resolution remote sensing image interpretation,theoretical analysis and FEM modeling.Focus is put on the analysis of formation and evolution process of the Mogangling landslide.It reveals that the earthquake-induced Mogangling landslide has experienced 6 stages of evolution processes.Firstly,high valley slope appears in the area,followed by the formation of unloading induced fractures of superficial rock mass on the slope.Then,the unloading induced fractures develop,propagate and form the potential sliding plane.Earthquake enhances fractures and initiates the high-speed start-up of landslide,followed by projection slide,impaction and collapse.The landslide mass blocks the Dadu River and forms a barrier lake,and finally,the blocked dam collapsed.Therefore,the formation mechanisms of Mogangling earthquake-induced landslide can be summarized as unload-shock-fracture,shear off-projection-pile.关键词
地震滑坡/摩岗岭滑坡/摩西地震/演化过程/成因机理Key words
earthquake-induced landslide/Mogangling landslide/Moxi earthquake/genetic evolution/formation mechanism分类
天文与地球科学引用本文复制引用
周洪福,韦玉婷,王运生,刘宏..1786年磨西地震触发的摩岗岭滑坡演化过程与成因机理[J].成都理工大学学报（自然科学版）,2017,44(6):649-658,10.基金项目
中国地质调查局国土资源大调查项目(DD20160272,12120114069501). （DD20160272,12120114069501）
