中文摘要：

水库水温是混凝土大坝的一个重要的温度边界条件,是大坝温度应力和温度控制的重要影响因素之一。如何在水库建成前,合理地预测水库建成后的水温分布情况,是大坝设计的一个重要前提。通过对多个水库水温的调查分析及预测研究,总结出水库水温分布的基本规律和主要影响因素,主要影响因素包括：水库形状、水文气象条件、水库运行条件和水库初始蓄水条件。介绍了目前工程中预测水库水温分布的主要方法,并采用水库水温数值分析软件,对二滩水库和锦屏一级水库水温进行数值预测,结果与实测资料吻合良好。

英文摘要：

Water temperature in reservoir is an important temperature boundary condition for concrete dam,which has great impact on the thermal stress and thermal control of dam construction.Correct prediction of the water temperature distribution of reservoir after impounding is very important for dam design.Based on a large number of prototype observation data.The basic laws of reservoir water temperature distribution were revealed and the 4 main impact factors of reservoir water temperature were summarized,which include the shape of reservoir,hydrological and climate conditions,reservoir operation conditions and initial impounding conditions.Three methods applied for predicting reservoir water temperature were presented,i.e.empirical method,numerical method and synthetical analogical method.The numerical analysis and feedback analysis results for Ertan Reservoir and Jingpin-1 Reservoir by using analysis software for reservoir water temperature were also presented.The predictions were well verified by observation data.