乌江渡水电站扩机工程地下厂房防渗帷幕灌浆

乌江渡水电站扩机工程施工区地质条件复杂，岩溶发育，存在渗漏条件。为确保地下厂房的安全，尽可能减少乌江河水及地下水对它的影响，在地下厂房上、下游各设计了一道防渗帷幕。防渗帷幕施工采用高压灌浆施工工艺，灌浆过程中遇到了注入量大，灌浆难以结束，溶洞，流沙层等特殊情况，采取了相应的处理措施，收到了较好的效果。

Anti-seepage curtain grouting of underground powerhouse of extension project of Wujiangdu Hydropower Station

The construction area of the extension project of Wujiangdu Hydropower Station has complex geologic conditions, developed karst with strong seepage conditions. In order to protect seepage, decrease the effect caused by water from the Wujiang River and underground water as much as possible, some anti-seepage curtains has been designed at the higher and lower reaches of the underground powerhouse. The anti-seepage works were constructed by high-pressure grouting technology. In this article, some special things occurred during the grouting treatment are introduced.