摘要： 本文对山美水库大坝30多年来的运行与安全状况做了介绍，通过观测资料分析和存在的问题，分析了大坝运行中的安全问题及其成因，并进行了安全评价并提出建议意见。

Abstract: This paper introduced the operation and safety condition for 30 years of Shanmei msenroir，analyzing the safety issues during operation and its factors through observational data analysis and existing problems．The safety evaluation is carried out and some suggestions arecome up with．