中文摘要：

凤凰山水电站位于山区转平原入口的冲积扇上,枢纽消能防冲的方案设计关系到建筑物的安全和下游河床河岸的稳定。为改善其消能段的水流流态,提高效能效率,通过整体水工模型试验,在原设计方案的基础上,对消能段结构进行优化。实际效果表明,推荐方案下消能段水流流态有了明显改善,下泄水流能够平顺地与天然河床相衔接,水流流态平顺,河势稳定,满足工程设计和施工的要求。

英文摘要：

Fenghuangshan hydropower station locates in the entrance of alluvial fan,it＇s energy dissipation design relates to the building safety and stability of downstream river banks.To improve water flow regime of energy dissipation section and increase the efficiency,energy dissipation section is optimized using integral hydraulic model test on the basis of the original design scheme,the actual effects show that water flow regime of energy dissipation section is improved significantly,the drainage water links up with natural river smoothly,the river regime is stability.The spillway energy dissipation meets the requirements of engineering design and construction.