木斯千水库面板堆石坝趾板裂缝成因分析及处理措施

Cause Analysis and Treatment Measures of Cracks in Toe Plate of Masqian Reservoir Face Rockfill Dam

木斯千水库面板堆石坝趾板建于弱风化基岩上,建成养护1年后检查发现产生16条裂缝,总长度87.13m。在分析裂缝成因和性状的基础上,对裂缝进行了有针对性的修补,并对处理后的裂缝进行压水试验,结果满足要求。水库经2年蓄水试运行,大坝下游未见渗水点,水库运行工况稳定,该工程裂缝修补经验可供类似工程参考。

The toe slab of Musiqian reservoir face rockfill dam was built on weakly weathered bedrock.After one year of construction and maintenance,16 cracks were found,with a total length of 87.13m m.On the basis of analyzing the causes and characteristics of the cracks,targeted repair is carried out on the cracks,and the treated cracks are subjected to water pressure tests,and the results meet the requirements.After 2 years of water storage and trial operation,there is no seepage point at the downstream of the dam,and the operation condition of the reservoir is stable.The crack repair experience of this project can be used as a reference for similar projects.