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采用极限平衡法要有相应的方法来评估边坡岩体的应力一应变状态。通常所依从的准则是克BRY衡限度后岩体可能沿移动面发生破坏。因此，在计算中必须利用岩石破坏极限前的力学特性，并引入相应的安全系数。露天开采实践证明，在变形中边坡岩体分成两种核柱体（主动压力校柱体和支
The method of limit equilibrium should be used to evaluate the stress-strain state of slope rock mass. The usual guideline is that the rock mass may be damaged along the moving surface after the BRY equilibrium is exceeded. Therefore, in the calculation, the mechanical characteristics before rock failure limit must be used, and the corresponding safety factor should be introduced. Open-pit mining practice has proved that in the deformation of the slope rock mass is divided into two kinds of nuclear cylinders (active pressure cylinder and support