摘要
为解决溢洪道水流对下游河道冲刷较为严重的问题,通过水工模型试验模拟溢洪道水流流态,分析了水流流态、掺气水深和压力分布情况,对起始工况闸门开启方式、闸门开启顺序进行了运行管理优化。研究结果显示:闸门开启顺序:4#→2#、6#→3#、5#→1#、7#时水舌均匀且远离溢洪道,有效降低了对下游河道的冲刷。控制闸门开启顺序和开度,可有效消除或减缓闸下水流不对称扩散影响,从而消除或减缓回流产生,可达到闸下流态良好,流速较为均匀的良好运行状态,研究成果可为类似工程提供技术支撑。
In order to solve the problem of serious scouring of downstream channel by spillway flow,the flow pattern of spillway was simulated through hydraulic model test,and the flow pattern,aeration depth and pressure distribution were analyzed,and the operation management optimization of gate opening mode and gate opening sequence under initial working conditions was carried out.The results show that when the gate opening sequence was 4#→2#,6#→3#,5#→1#,7#,the water tongue was uniform and far away from the spillway,which effectively reduces the scouring to the downstream channel.Controlling the opening sequence and opening degree of the gate can effectively eliminate or slow down the influence of asymmetric diffusion of water flow under the gate,so as to eliminate or slow down the generation of backflow,and can achieve a good operation state with good flow state and uniform flow rate under the gate.The research results can provide technical support for similar projects.
作者
郑开发
张辉
Zheng Kai-fa;Zhang Hui(Anhui Meishan Reservoir Management Office,Luan 237300,China;Anhui and Huaihe River Institute of Hydraulic Research,Hefei 230088,China)
出处
《江淮水利科技》
2022年第1期6-8,12,共4页
Jianghuai Water Resources Science and Technology
