【摘要】 针对地震条件下重力坝深层滑动失稳模式确定的问题,以亭子口重力坝为工程背景,采用了以静力条件下大坝深层滑动失稳模式为基础,综合模型试验与数值分析、定量分析与定性分析成果的方法进行了研究。获得了亭子口重力坝地震条件下深层滑动可能的3种失稳模式,并结合局部与整体稳定安全系数的分析,可知大坝安全度最低的动力滑动模式为:齿槽上游侧拉裂,坝体连带部分基岩沿齿槽底部软弱岩层和泥化夹层JS2-1-2的组合滑面滑动。更多还原

【Abstract】 For searching the sliding failure mode of Tingzikou gravity dam along deep-seated weak planes under seismic condition,a program based on consequences under static conditions and results of model experiment,numerical analysis,quantitative and qualitative analysis was used. Three possible paths of sliding were acquired and the emergency capacity of different sliding paths was gained. The most probable failure path was proved to be the combination of cracked upstream face of the tooth,weak rock layer under the tooth and the muddy layer marked as JS2-1-2 downstream the tooth.更多还原