大渡河瀑布沟水电工程截流施工

River Closure of Pubugou Hydropower Station on Dadu River

大渡河瀑布沟水电工程截流落差大、施工难度较大。参照水力学模型试验成果,确定了该工程截流戗堤布置、龙口位置选择、龙口段和非龙口段划分、截流施工进占抛投方式。通过对比试验研究,探讨了降低截流难度、提高截流抛投强度的工程措施,为安全实施截流提供了依据。

The river closure work of Pubugou Hydropower Station on Dadu river is quite difficult because of its high closure drop;referring to the result of hydraulic model test,the layout of closure dikes,position choice of closure gap,division of gap section and non-gap section,bank-off advancing and dumping measures are worked out,the measures for reducing the difficulty of closure work and enhancing the dumping intensity are studied by comparison test,the details above mentioned are described.