Application of prestressed anchorage in rehabilitation of dam bedrock fault crack

A lot of dams in China were built during 1950～1970.To concrete dams,the bedrock fault crack is a big threat to dam safety.In the paper,successful application of prestressed anchorage,anti-slide gravity pier and high pressure consolidation grout-ing in dam bedrock fault crack treatment was introduced.As well,the constitution of prestressed anchorage and construction pro-cess were illustrated.