采用传统的刚体极限平衡法导出了第二滑裂面为倾斜的双滑面深层抗滑稳定计算公式,针对重力坝深层抗滑稳定计算中各参数φ、θ、β的不确定性问题,以某重力坝为例对其参数进行了敏感性分析,并评价了各参数在抗滑稳定计算中对安全系数K的影响。结果表明,参数φ、θ、β对安全系数K均有一定影响,在实际工程中应充分考虑这些影响,以便使工程达到既安全又经济的目的。 The traditional rigid body limit equilibrium method is used to derive the formula for calculating the deep sliding stability of the double slip surface with the second slip plane. According to the uncertainty of the parameters φ, θ, β in the stability calculation of the deep sliding of the gravity dam, A gravity dam is taken as an example to conduct a sensitivity analysis of its parameters and to evaluate the influence of various parameters on the safety factor K in the anti-sliding stability calculation. The results show that the parameters φ, θ, β have some influence on the safety factor K, and these effects should be fully considered in practical projects in order to make the project safe and economical.