摘要
On the basis of research at home and abroad, starting from the landslide mechanism establish geomechanical model of landslides with low dip angle strata, all the parameters in the model, such as landslide size, slip angle, back edge ripping slot seeper depth and so on, were obtained by digital landslide technology and fields investigation and put them into the model formula then landslide critical friction coefficient can be obtained, and landslide total down-slide and total resistance slippery force shall be get. This is the first putting forward the concept of critical friction coefficient and calculating methods, and the coefficient directly related to the slippery ability or stability of the landslide. Analysis shows that the critical friction coefficient and landslide sliding body size (the length and width of the sliding surface), sliding plane obliquity are positive correlation, with landslide weight inversing relationship.