悬栅消力池消能特性的试验研究

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。

Experimental Research on Characteristic of Suspended Grid Plunge Pool Energy Dissipation

A new form of energy dissipater named suspended grid plunge pool is posed through the hydraulic model experiment of diversion tunnel in Jilintai first-order hydropower station,which is located on the bank of Kashi River, Xinjiang.Based on the form,energy dissipation characteristic of suspended grid plunge pool,the change of water depth of plunge pool and swell in downstream before and after putting suspended grid are further analyzed in this paper.The experiment result shows that hydraulic jump structure is broken,mass mechanical energy is consumed and inner structure of stream is changed and adjusted after putting suspended grid in the same stream condition.Damping ratio is increased. The damping ratio of suspended grid plunge pool is 15.10% higher than that of plunge pool,and its maximum value is(95.14%.)Water depth of plunge pool and swell height in downstream are reduced especially after putting suspended grid.