Abstract: On 1st, November 2011, Ms 6.0 earthquake happened. It exerted influence on the two cascade reservoir dams which were 16 km apart. Monitoring data of the two dams were found abnormal and showed different change trend. By analysis of the monitoring data, the effect of earthquake on safety of the clay core dam was studied.

摘要： 某梯级水库两库相距16 km，2011年11月1日梯级水库附近发生里氏6.0级地震，工程区震感强烈，上下游两粘土心墙坝安全监测多项测值异常，同种坝型表现出不同的变化趋势。通过对震前、震后安全监测资料的分析，研究了本次地震对梯级水库粘土心墙坝安全性的影响。