天花板水电站上游围堰设计与施工

Upstream Cofferdam Design and Construction for Tianhuaban Hydropower Stations

天花板水电站上游围堰采用全年挡水土石围堰,最大堰高40.5 m,采用控制性帷幕灌浆和复合土工膜相结合的防渗形式。对上游围堰设计及施工进行了总结,通过精心设计、科学施工,上游围堰经受住了汛期洪水的考验,运行良好,保证了大坝混凝土施工的顺利进行。

The upstream cofferdam of Tianhuaban Hydropower Station is embankment cofferdam with maximum height of 40.5 m. The cofferdam will retain water in an all year, and the seepage is controlled by curtain grouting and compound geo- membrane. The design and construction of the cofferdam are summarized herein. The practical operation shows that the upstream cofferdam has withstood the floods and keeps in a good condition.