Failure Mode and Mechanism of the Consequent Slope in Xuan’en County

The deformation degree and failure mode of the slope is always different under the influence of different factors. In this paper, the geological characteristics of the consequent slope failure happened in Xuan’en County are statistically analyzed, the sensitivity of several factors to the deformation degree of the slope is orthogonally studied. Further, the influence pattern of the main controlling factors is also discussed by response surface method. The results show that slope dip and strata dip are the main contributing factors, and the difference in their combination forms leads to the difference in slope failure modes. When the strata dip of the rock is greater than the slope dip, the slope shows slipping-bending failure under gravity pressure, otherwise, it is mostly slipping-rupture failure which develops gradually from the toe to the top of the slope.