Progressive Formation of Retrogressive Landslide and the Lateral Length of Instability

Retrogressive landslide is caused by the lower rock mass sliding, so that upper part loses support, deformed, and starts to slide. In process of highway construction, incised slope often leads retrogressive landslide, determination damage range great significance for control slope. Taking a in Hunan Province as research object, particle flow discrete element used numerically simulate entire failure According complex geological conditions slope, each model divided, displacement key parts monitored, whole simulated, lateral length traction instability calculated through stability theory sliding pull-crack The shows root cause rainfall direct cause. When treated engineering practice, can be obtained according realize accurate judgment body.