万家寨水利枢纽电站进水口止水补强处理

Treatment of Sealing and Strengthening for WaterInlet of Power Station of Wanjiazhai Hydro-junction

万家寨水利枢纽6台机组相继投入运行后,发现下游坝面钢管预留槽起始底部与坝体一期混凝土接触缝面处,以及伸缩节室明管段上游侧钢管与混凝土接缝处均不同程度存在渗漏水现象。经进水口检查及研究分析,采用对 号纵缝、压力钢管首端与混凝土接缝处补做止水设施,辅以钢管预留槽起始底面钻孔排水的处理方案,取得了较好的处理效果。

Pointing to the leakage water at the joints of concrete after operation of six generating sets in Wanjiazhai Hydro-junction, the treatment scheme of sealing for No.1 longitudinal joint and at the joint of concrete with head of penstock and boring-drainage under the bottom of steel pipe has achieved fine effects.