天白水电站溢洪道消能结构形式优化试验研究

摘要

Tianbai hydropower station lies in the alluvial fan where mountains area meets plain ,design of ener-gy dissipation and erosion relates to the safety of buildings and the stability of downstream bed and riverbank. This paper adopted integral hydraulic model tests to improve the water flow regime and the efficiency of energy dissipation,to optimize the shape of energy dissipation section based on the original design scheme.Results show that proposal scheme obviously improves the water flow regime and greatly increases the energy dissipa-tion efficiency.It achieves the ideal energy dissipation effect.%　　天白水电站布置在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，本文通过整体水工模型试验，在原设计方案的基础上，对消能段体形进行了优化，实际效果来看，推荐方案下消能段水流流态有了明显改善，消能效率也大幅提高，达到了较为理想的消能效果。