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悬栅消力池是在新疆喀什河吉林台一级水电站引水隧洞水力学模型试验中提出的一种新型的消能工型式。通过试验研究,进一步分析悬栅消力池的消能特性,加栅前后消力池内水深及消力池下游明流洞内涌浪的变化。试验结果表明:同一工况下,悬栅的设置,破坏了水跃的结构,使水流内部结构经历剧烈的改变和再调整,消耗大量的机械能。消能率整体提高,最大提高幅度为15.10%,最高消能率达95.14%。加栅后消力池内水深及消力池下游明流洞内涌浪高度都有明显消减。
Catch basin stilling pool is a new type of energy dissipater proposed in the hydraulic model test of diversion tunnel of Jilintai-Ⅰ Hydropower Station in Kashi River, Xinjiang. Through the experimental study, the energy dissipation characteristics of the suspension grid stills are further analyzed, and the changes of the water depth in the stilling pool before and after the grid and the surge in the downstream of the stilling pool are analyzed. The test results show that under the same working condition, the setting of suspended grid destroys the structure of water jump and causes the internal structure of water flow to undergo drastic changes and readjustments, consuming a large amount of mechanical energy. The energy dissipation rate as a whole increased the maximum increase rate of 15.10%, the highest energy dissipation rate of 95.14%. After the grid plus the depth of the sinking pool and downstream of the stilling pool Mingyong cave surge height are significantly reduced.