凯巴萨水电站泄水建筑物模型试验研究  

Model Test Analysis of the Water Release Structures in Caculo-Cabaca Hydropower Station

作　　者：田静[1] 郭汉驰 薛海 TIAN Jing;GUO Hanchi;XUE Hai(Department of Hydraulic Engineering,Yellow River Conservancy Technical Institute,Kaifeng 475004,China;Shenzhen Guangming Construction Group No.1 Construction Engineering Co.,Ltd.,Shenzhen 518083,China;School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]黄河水利职业技术学院水利工程学院,河南开封475004 [2]深圳市光明建工第一建设工程有限公司,广东深圳518083 [3]华北水利水电大学水利学院,河南郑州450046

出　　处：《水电与新能源》2024年第10期22-25,共4页Hydropower and New Energy

基　　金：国家自然科学基金重点项目(41930643)。

摘　　要：基于大比尺水工模型试验,分析安哥拉凯巴萨水电站表孔泄洪、底孔泄洪及表底联合泄洪时不同运行工况下流态、流速、闸门允许开启高度等水力特性,研究表明泄水建筑物体型及布置总体合理。高水位大流量泄洪时溢流表孔闸后横向扩散水流在挑坎鼻坎附近碰撞激起高的掺气水冠,溢流坝闸门相对开度e/H<0.57,此时闸前水流水力条件较优,溢流坝掺气坎掺气效果较佳;若遇设计洪水,优选5个表孔闸门全开敞泄洪水。本研究成果可供类似工程设计及泄水建筑物调度决策参考。Based on large-scale hydraulic model tests,the hydraulic characteristics of the water release structures in Angola Caculo-Cabaca Hydropower Station are studied,including the flow regime,flow velocity,and allowable gate opening height under the surface outlet discharge,bottom outlet discharge and surface and bottom outlets combined discharge conditions.The results show that the shape and layout of the water release structures are reasonable.Under the high water level and large flow discharge condition,the lateral diffusion water flow behind the overflow surface outlets collides near the flip bucket,causing high aerated water crowns.The hydraulic conditions of the water flow in front of the gate and the aeration effect of the aerators are better when the relative opening of the overflow outlet gate e/H is less than 0.57.In case of a design flood,it is recommended to fully open the five surface outlet gates to discharge flood.

关 键 词：泄水建筑物 水力特性 模型试验 闸门开度 优化调度 

分 类 号：TV135[水利工程—水力学及河流动力学] TV65