以西部强震区糯扎渡高心墙堆石坝为例,采用拟静力抗震安全系数和Newmark刚塑体滑移量验算了动力稳定性,基于工程实际确定由若干变量控制的任意滑动面,采用Morgenstern-Price法计算安全系数,并结合和声优化算法搜索坝坡在地震荷载作用下的临界滑动面及相应安全系数,依据Newmark滑移法确定滑动体的地震滑移量。分析结果表明,该坝滑移量超过标准,建议坝顶部位应采取加固措施。 Taking the Nuozhadu high core rockfill dam in the strong earthquake area of ​​western China as an example, the dynamic stability is checked by the quasi-static seismic safety factor and the Newmark rigid plastic body slip, and the arbitrary sliding surface controlled by several variables is determined based on the engineering practice , The safety factor was calculated by Morgenstern-Price method, and combined with the harmony optimization algorithm to search the critical slip surface and corresponding safety factor of dam slope under earthquake load. The slippage of the sliding body was determined by the Newmark slip method. Analysis results show that the dam slippage exceeds the standard, it is recommended to reinforce the top of the dam.