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山区弯道水流特性复杂,消能工布置困难,为确定其适宜的消能工型式,分析了山区河流水流特性及工程中常用消能型式,并结合水工模型试验研究了不同消能工布置下弯道水流流态及消力池出口流速分布,提出在弯道出口处设置消力池加辅助消能工(消力墩+异形坝)的工程措施。结果表明,在消力池内设置消力墩和异形坝后,水流流态得到很好的改善,出池水流流速分布均匀,消能效果更好。
In order to determine the appropriate type of energy dissipater, the flow characteristics of mountain river and the energy dissipation patterns commonly used in the project are analyzed. Based on the hydraulic model test, the energy dissipation characteristics of different energy dissipater layouts The curve of water flow at the lower curve and the flow velocity distribution at the exit of the stilling pool, the engineering measures of setting up the stilling pool plus auxiliary energy dissipater (dissipating piers + profiled bar) at the exit of the curve are proposed. The results show that the flow pattern of water in the stilling pool is well improved after the dike and shaped bar are set up in the stilling pool. The velocity distribution of the water in the pool is uniform and the energy dissipation effect is better.