瀑布沟水库蓄水后大坝帷幕补强灌浆处理

针对瀑布沟水电站在初期、二期蓄水过程中发生的帷幕渗流问题，需要采取补强灌浆处理以降低帷幕渗流量。介绍了帷幕灌浆的主要施工方法和流程。针对特殊部位，包括帷幕穿越下部勘探平洞、设计帷幕底线上孔段和灌浆异常的情况，提出了主要处理措施和具体补强灌浆方案，并对蓄水过程中发生渗流的原因进行了分析。补强灌浆处理之后的监测数据表明，渗流量控制在设计允许范围内。

Reinforced grouting of dam curtain of Pubugou Hydropower Station after impoundment

In view of the seepage of dam curtain in the process of initial and second-phase impoundment of Pubugou Hydropower Station,reinforced grouting should be adopted to reduce the seepage discharge.The main construction method,procedure and countermeasures for special cases are introduced.According to the seepage in the initial and second-phase impoundment,the specific grouting and reinforcement scheme is proposed and the cause of seepage in the impoundment process is analyzed.The monitoring results after grouting and reinforcement show that the seepage discharge is controlled within an allowable range.