层状岩体边坡组合滑面的稳定性分析方法

Method for Stability Analysis of Combined Sliding face in Strataform Rock Slope

作者提出了层状岩体边坡组合滑面的确定方法，并编制了相应的计算程序ＪＣＩＲＣＬＥ。通过算例对边坡参数进行了分析。

Abstract This paper introduced a geological structural characteristics of layer type rock slope. And base on the characteristics, a combined sliding face method was applied to determine a most dangerous location of combined sliding face. With an establishment of a slope geometric and mechanical mode, the geometrical and mechanical parameters provided have determined mathematics mode of a most dangerous sliding face and its calculation program ( JCIRCLE ). With a slope stability parameter Fs and a structural face length ( s ), an arch cutting line angle ( A ) and a relationship curve between a failure face cutting line and horizontal angle ( B ), a min. Fs will be a stability parameter of the slope and S、A and B will be the parameter of the most dangerous combined sliding face. This paper also introduced that the inclined angle, a slope angle and a slope height H have a big influence to the stability parameter Fs. In the end of the paper, an application case of the stability analysis was conducted in a third slope of working slope of Pingzhuang West Open Pit Mine and the calculation mode and the calculation program were applied to the stability analysis. The slope stability parameter was 0.92 and a sliding displacement of the slope was predicted.