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此文是某水库右坝肩岩体稳定专题工作成果；提出了滑坡体内破裂面是倾斜的假定，并用楔形体极限平衡计算破裂面位置及滑动力。通过对目前稳定岩体的计算，认为内破裂面作用力与法线夹角δ值取岩石内摩擦角比较合适。最后运用赤平极射投影进行空间滑动力与阻抗的分析计算。根据计算成果，提出了相应的处理措施，为生产单位采用。 在工地做了符合本工程地质情况的块状岩体稳定平面实验，试验成果证实了提出的假定和计算方法是符合实际的。
This article is the result of special work on rock stability of the right dam abutment of a reservoir; it puts forward the assumption that the rupture surface of the landslide is inclined, and calculates the position of the rupture surface and the sliding force with the limit balance of the wedge body. Through the calculation of the current stable rock mass, it is considered that the internal fracture surface force and the normal angle δ value take the rock internal friction angle is more appropriate. Finally, the stereographic polar projection is used to analyze and calculate the spatial sliding force and impedance. According to the calculation results, the corresponding treatment measures are proposed for the production unit. At the construction site, a stable rock mass plane experiment in accordance with the geological conditions of the project was made. The test results confirm that the proposed assumptions and calculation methods are in line with reality.