吉布洛电站上游调蓄水库泄水建筑物水工模型试验研究

发布时间：2017-12-28 07:23

本文关键词：吉布洛电站上游调蓄水库泄水建筑物水工模型试验研究　出处：《电网与清洁能源》2016年07期 　论文类型：期刊论文

【摘要】：针对吉布洛电站上游调蓄水库泄水建筑物底孔位置低、泄量大、下游仅用防冲护坦作消能工等特点,采用1∶40几何比尺建立了正态整体物理模型,通过模型试验分析了泄水建筑物过流能力、水流流态及流速、进出口体型等。试验发现泄流时,出现了排漂泄流下游水横向流入表孔下游、主流侧流左右岸裹头水流现象明显、底孔下游水跃有水拱及二级水跃现象发生等问题。为此,提出了边墩进口体型优化方案,同时疏浚下游河道,改善水流流态。结果表明,措施有效,横向流消失,水拱及水跃现象基本消除,为工程设计和施工提供依据。
[Abstract]:In view of djiploho Hydropower Station Reservoir upstream spillway bottom position is low, characteristics of large discharge and downstream just as scour apron dissipator, with a ratio of 1 to 40 geometric scale of a normal physical model, through the model test of spillway flow capacity, flow velocity, and the size of import and export etc.. The test found that discharge, the discharge under water discharge floating lateral inflow hole table downstream, the mainstream left and right bank side flow wrapped head flow phenomenon is obvious, the bottom water downstream water jump arch and two stage water jump phenomenon etc.. Therefore, an optimization scheme for the shape of the edge of the piers is proposed, and the downstream channel is dredged to improve the flow pattern. The results show that the measures are effective, the transverse flow disappears, and the water arch and the water jump are basically eliminated, which provides the basis for the engineering design and construction.
【作者单位】：黄河水利职业技术学院;小流域水利河南省高校工程技术研究中心;黄河水利水电开发总公司;
【基金】：国家自然科学基金项目(U1304503) 河南省基础与前沿技术研究计划项目(132300410022)~~
【分类号】：TV65;TV131.61
【正文快照】： 1概况吉布洛电站上游调蓄水库位于赤道几内亚维乐河上,工程为闸坝式结构,河床坝段为混凝土挡水及泄水建筑物,两岸连接段为心墙堆石坝,坝长518 m,坝宽约100 m,最大坝高50 m。混凝土泄水建筑物长113 m,由3个泄洪底孔、3个泄洪表孔和1个排漂道组成,如图1所示。设计洪水标准[1]为5

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