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FORMATION AND MECHANISM ANALYSIS OF MULTI-LEVEL RIFT TROUGH IN TRANSLATIONAL SLIDING LANDSLIDE
Author(s): 
Pages: 770-778
Year: Issue:  5
Journal: Journal of Engineering Geology

Keyword:  Field surveyPhysical simulationU-shaped slot modelMultistage rift troughMechanism models;
Abstract: 通过对中江县冯店垮梁子滑坡的现场调查和室内物理模拟试验研究,发现滑坡滑动过程中存在诱发次级拉裂缝产生甚至贯通的现象,结合滑坡的变形历史迹象,进行受力分析,论证拉裂缝产生形成过程及位于拉裂缝间滑带局部贯通现象,提出U形槽模式多级平推式滑动理论;对比宣汉天台乡滑坡已有对多级平推式滑坡研究,针对多级平推式滑坡后缘多级拉陷槽的形成过程和成因机理进行分析,提出多级平推式滑坡存在牵引后退式和推动前进式两种不同启动和运动模式,就两种模式各自岩性组成、构造裂隙发育情况、启动水头、启动速度、及多级滑动启动水头变化对比分析,建立地质力学机制模型.
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