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Watertight grouting construction technology of longitudinal cofferdam foundation of Shatuo hydropower station
Author(s): 
Pages: 37-39
Year: Issue:  9
Journal: YANGTZE RIVER

Keyword:  子堰岩溶通道堵漏灌浆沙沱水电站;
Abstract: 沙沱水电站纵向混凝土围堰基岩8 m范围内的防渗灌浆完成后,发现在子堰上游段左侧明渠水面有漏斗状漩涡,右侧河床基坑有多处渗漏出水点,且渗流量较大.经分析推断,漏水主要是基础深层岩溶通道发育所致,需要对该部位进行堵漏灌浆处理.根据钻孔分析,采用了先充填灌浆后堵漏灌浆的堵漏方法,效果十分显著.介绍了纵向混凝土围堰子堰基础岩溶通道堵漏灌浆的施工工艺、施工程序以及灌浆施工的基本情况.
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