中文摘要：

结合亭子口水利工程，采用非线性有限元法对重力坝复杂坝基进行了深层抗滑稳定分析。通过强度储备系数法的计算得到了坝体及坝基系统的渐进破坏过程并搜索出了最危险的滑移模式；同时依据规范规定，采用基于改进等法的刚体极限平衡法核算了坝基最危险滑动面的稳定性；最后做出安全评价，结果表明采取加固措施后的坝基深层抗滑稳定是安全的。

英文摘要：

Based on hydropower projects in Tingzikou, anti-sliding stability for the complicated foundation of gravity dams is analyzed by using non-linear FEM Computed by the strength reserve coefficient method, the gradual destruction process of dam foundations is obtained and the most dangerous sliding mode of system is discovered. Meanwhile, the method based on improved equal safety factor is used to verify the stability of corresponding sliding faces in accordance with the design standard. Finally, the safety evaluation is given, and the results show that the anti--sliding stability of reinforced dam foundations is safe.