黄家寨水电站坝址区河谷狭窄,岩层层面较发育,特别是右坝肩溶蚀裂隙发育,工程地质条件对坝肩稳定极为不利。为确保拱坝扁安全,本文采用刚体极限平衡法对左、右岸坝肩进行了抗滑稳定计算,为拱坝体形设计及坝肩处理提供了决策依据。 The dam site of Huangjiazhai Hydropower Station is characterized by narrow valleys, relatively developed rock layers, especially the development of dissolution cracks on the right abutment dam. The engineering geological conditions are extremely unfavorable to the stability of the abutment. In order to ensure the flatness and safety of the arch dam, the rigid-body limit equilibrium method is used to calculate the stability of the abutments on the left and right banks, which provides the basis for the design of the arch dam and the treatment of the abutment.