桂江下福水利枢纽工程二期上游围堰渗漏原因及处理

Reasons for and treatment of 2nd-stage upstream cofferdam leakage at Xiafu hydraulic complex on Guijiang river

桂江下福水利枢纽工程二期上游围堰在水库蓄水时发生了管涌渗漏,出现险情,通过对围堰管涌位置的分析,发现管涌渗漏是一期工程中的弃碴造成。通过对管涌位置的局部开挖、清理、加厚及固结灌浆等处理,效果良好。

Dangerous piping leakage was seen in the 2nd-stage upstream cofferdam in the course of reservoir impoundment of Xiafu hydraulic complex on Guijiang river.According to the results of the analysis of the piping positions,the piping leakage is caused by the spoil of the 1st-stage works.The treatment measures include local excavation,clearing,thickening and consolidation grouting of the piping positions and had rendered good effect.