浅谈锦屏二级水电站拦河闸坝帷幕灌浆设计与施工

Design and Construction of Curtain Grouting in Gated Dam at Jinping Ⅱ Hydropower Station

锦屏二级水电站拦河闸坝肩均有卸荷带发育,岩体较破碎,其中左岸有强、弱卸荷带存在,右岸有弱卸荷带存在,强～弱卸荷带深10～20 m,且两岸地下水具有埋藏较深的特点。帷幕灌浆是保证拦河闸坝安全蓄水的重要措施之一,介绍了拦河闸坝帷幕灌浆设计、施工技术、质量控制及灌浆后的效果评价等。

In dam abutment of Jinping Ⅱ hydropower station,relaxed zones are developed with more fractured rock mass.Intensely and weakly relaxed zones are in left bank and weakly relaxed zones are in right bank with depth between 10 to 20cm.Groundwater in both banks are embedded deeply.Curtain grouting is one of important engineering measures for ensuring water storage before gated dam safely.In this paper,design,construction technology,quality control for curtain grouting for gated dam are presented and grouting effect assessment is given.