Abstract: After entering the aging period, the geometrical, physical, mechanical, hydraulic, thermal, chemical and other properties of dams would deteriorate with growth of dam age and those deteriorations would affect the longevity and safety of dams. In this paper, firstly, the conception of dam aging was clarified according to the age-related changes of dam properties. Secondly, the age structure of Chinese dams is analyzed statistically. Finally, the major aging problems and consequences were summarized and the necessity and importance of the systematic research on the dam aging were emphasized.?

摘要： 一般来说，大坝进入老龄阶段以后，其几何学、物理力学、水利学、热力学、化学等综合特性将随着坝龄的增加而逐渐恶化，直接影响大坝的使用寿命和健康安全运行。本文首先从大坝综合特性随坝龄的变化规律入手，解释了大坝老化的概念，然后对我国现有大坝运行年龄结构进行了统计分析，总结出了大坝老化主要的问题及其带来的后果，提出了系统研究大坝老化的必要性和重要性。