混凝土面板堆石坝病害特点及其除险加固

摘要

近年来，我国混凝土面板堆石坝建设取得显著成就，但30多年来部分面板坝也出现了各种各样的病害，主要包括面板挤压破坏、面板裂缝、面板塌陷、止水失效和地震震损等，有的大坝渗漏严重，危及大坝安全。根据面板堆石坝病害特点，通过总结湖南白云和株树桥面板坝除险加固经验，提出了面板堆石坝综合除险加固的综合措施，主要包括疏松垫层加密灌浆、面板脱空充填灌浆、破损面板修补、面板裂缝处理和止水修复等，可为面板堆石坝除险加固提供参考。%In recent years,the CFRD construction in China has obtained outstanding achievements;however,various dam de-fects appeared in the passed 30 years such as compression failure of slab,slab crack,slab subsidence,water sealing failure, earthquake damage,etc,and some dams are in serious seepage condition,which threaten the dam safety significantly.Through the typical reinforcement engineering practices in Baiyun dam and Zhushuqiao dam in Hunan Province,we summarize the charac-teristics of CFRD defects,and put forward comprehensive reinforcement measures including dense grouting for loose layers,filling grouting for slab void,patching for damaged slab,repairing water sealing.These measures could provide reference for CFRD re-inforcement.