黄河柴家峡水电站施工截流思考

黄河柴家峡截流流量主要受控于上游已建梯级电站群。2005年黄河上游水量偏丰,9~11月柴家峡坝址河道流量超过多年平均流量1 050 m3/s,截流戗堤预进占的实际流量1 700 m3/s,龙口合龙进占流量1 200~1 700m3/s,仅次于黄河三门峡截流流量2 000 m3/s。如此大流量截流成功,值得总结和思考。

On river closure of Chaijiaxia hydropower project

The discharge for river closure of Chaijiaxia hydropower project is mainly controlled by the existing cascade hydropower stations on upstream Yellow River.In 2005,the water quantity of upstream Yellow River was abundant,and the river discharge at damsite was more than mean annual discharge of 1 050 m~3/s.The actual discharge for pre-embankment of the banquette was 1 700 m~3/s,and the discharge at closure gap was 1 200~1 700 m~3/s that was merely next to the closure discharge of 2 000 m~3/s for Sanmenxia hydropower station on Yellow River.It is worth thinking and summing-up on successful completion of river closure.