采用钢筋混凝土非线性有限元分析方法，对牛路岭水电站空腹重力坝的廊道、腹拱顶及溢流面局部裂缝进行了计算，分析了裂缝成因，并作出相应的安全度评价，对电站运行、大坝原型观测及工程设计有一定的指导意义． The non-linear finite element analysis method of reinforced concrete was used to calculate the local cracks in the corridor, belly vault and overflow surface of the fast-acting gravity dam in Niulailing Hydropower Station. The causes of cracks were analyzed and the corresponding safety evaluation was made. Operation, dam prototype observation and engineering design have certain guiding significance.