Control design based on progressive failure characteristics of slope: taking Budaiying slope in Shiyan city, Hubei province as an example

The traditional strength reduction method (such as the unbalanced thrust method) is generally used in slope control design, and the design control force is based on unbalanced thrust, etc. Based on the analysis of the in-situ stress distribution along the sliding surface of slope, the three layout methods of control measures along the sliding surface are put forwards in this paper. Through the calculation and research on slope stability and anti-sliding design, the determination method of anti-sliding force under different boundary (or working) conditions is suggested. With the help of the multi-parameter space-time stability evaluation index of slope, a partial coefficient method for anti-sliding control design is developed, and the definitions of main sliding direction and slope failure are put forward. The proposed anti-sliding measure layout, anti-sliding force determination and partial coefficient design method in this paper are applied to the engineering (such as Budaiying slope in Shiyan city, Hubei province). The results demonstrate that the location selection of control measures, the determination of anti-sliding force and the partial coefficient design method of the slope are feasible after years of run.