We use K to analyze the probability of occurrence of sliding friction circle, and demonstrates it in the structural plane stereographic projection.
用分散性指标k表示块体滑动面的分散性，由此分析滑动摩擦圆的出现概率，并表示在结构面赤平投影图上。
2
The key problem of stability analysis of roadbed slope is how to determine the most dangerous slidingcircle and calculate the minimum safety factor, this is a nonlinear problem.
路基边坡稳定性评价的关键是如何确定最危险滑裂面的位置并计算与之相对应的安全系数，是非线性优化问题。
3
The circle sliced method is a simple and effective way to analyze stability of earth slope. As searching the most possible sliding surface, tentative computation process is complicated.