Abstract: The concrete defects are seen everywhere in the filed of dam operation, defect repair carried out underwater has not been solved very well due to influenced by material and construction technique. In this article the reasons impacting the effect of underwater repair have been analyzed, the new development on research of underwater repair material and construction equipment is introduced. The technology on common underwater defects concerning hydraulic concrete is discussed combined with some application cases.

摘要： 混凝土缺陷是一种普遍存在的现象，受材料及施工工艺的影响，混凝土缺陷的水下修补一直没有得到很好的解决。本文对影响水下处理效果的原因进行了分析，介绍了近年来混凝土水下修补材料研究及施工设备的新进展，对常见的水工混凝土水下缺陷的施工工艺进行了论述，同时结合一些混凝土缺陷水下修补的应用实例进行了介绍。