丰满水电站重建工程升鱼机进鱼口水流条件优化措施研究

发布时间：2018-07-02 14:37

  本文选题：丰满水电站重建工程 + 升鱼机进鱼口　； 参考：《水利水电技术》2017年02期

【摘要】：为了恢复丰满水电站鱼类洄游通道,在丰满水电站重建工程坝址处设置升鱼机和鱼道。丰满重建工程升鱼机具有所处河道宽,发电机组运行工况复杂、下游水深浅等特点,鱼类寻找升鱼机入口具有较大的难度。为提高升鱼机运行效率,通过数值模拟开展了升鱼机进鱼口水流条件改善措施的专项研究。模拟结果表明,在机组流量1 170 m3/s、围堰上游主要开挖至187 m、局部区域开挖至186m、围堰及下游区域局部开挖至187 m的条件下,三台及三台以下机组同时运行时,河道大部分区域流速均小于1.2 m/s,鱼类能进入集鱼系统进鱼口。成果显示,文中提出的电站运行方式及下游河道开挖方案能为电站鱼类上溯提供顺畅的洄游通道。
[Abstract]:In order to restore the fish migration channel of Fengman Hydropower Station, a fish hoist and a fish tunnel are set up at the site of the reconstruction project of Fengman Hydropower Station. It is difficult for fish to find the entrance of fish hoist because of its wide channel, complex operating conditions and shallow downstream water. In order to improve the operating efficiency of the fish hoist, a special study was carried out on the improvement of the water flow conditions at the fish inlet of the fish lifter by numerical simulation. The simulation results show that under the conditions of unit flow rate of 1,170 m3 / s, the upstream of the cofferdam is mainly excavated to 187 m, the local area is excavated to 186m, and the cofferdam and downstream area are excavated to 187 m, when three or less units operate simultaneously, The flow velocity in most areas of the river is less than 1.2 m / s, and fish can enter the fish-collecting system. The results show that the proposed operation mode and the downstream channel excavation scheme can provide a smooth migration channel for the upstream fish in the power station.
【作者单位】： 丰满大坝重建工程建设局;南京水利科学研究院;
【分类号】：S956;TV73
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本文编号：2090440