三门峡水库在黄河调水调沙体系中的作用

发布时间：2018-05-01 06:34

本文选题：调水调沙 + 排沙　；参考：《人民黄河》2017年07期

【摘要】：三门峡水库是黄河防洪工程体系的重要组成部分,对黄河中游水沙起着重要的调控作用。自2002年起,为减少黄河下游河道淤积与恢复河槽的过洪能力,黄河水利委员会组织和开展了以小浪底水库运用为主的黄河调水调沙实践活动,三门峡水库参与了多次黄河调水调沙生产运用,在运用过程中科学制定调度方案,通过对枢纽泄流排沙设施的调节与控制,为小浪底水库调水调沙运用提供所需水沙量。对三门峡水库运用进行的分析表明,三门峡水库运用在黄河调水调沙过程中起着承上启下的作用,能有效控制小浪底水库入库水沙的时空分布过程,有利于小浪底水库库区明流段淤积形态的改善及小浪底水库人工塑造异重流形成与消亡的控制,提升小浪底水库的排沙效率,增加并恢复黄河下游主河槽的过洪能力。同时,有利于三门峡水库自身的排沙减淤与淤积形态的改善。
[Abstract]:Sanmenxia Reservoir is an important part of the flood control engineering system of the Yellow River and plays an important role in regulating the water and sediment in the middle reaches of the Yellow River. Since 2002, in order to reduce the deposition of the lower Yellow River and restore the flood capacity of the channel, the Yellow River Water Conservancy Committee has organized and carried out the practical activities of water and sediment transfer and sediment transfer of the Yellow River, which is mainly used by the Xiaolangdi Reservoir. Sanmenxia Reservoir has participated in the production and application of water and sediment regulation of the Yellow River for many times. In the process of operation, it scientifically formulates the dispatching scheme, and provides the required water and sediment amount for the water and sediment transfer operation of Xiaolangdi Reservoir through the regulation and control of the drainage and sediment drainage facilities of the Hub. The operation of Sanmenxia Reservoir shows that the application of Sanmenxia Reservoir plays a connecting role in the process of water and sediment transfer in the Yellow River, and it can effectively control the space-time distribution of water and sediment in Xiaolangdi Reservoir. It is beneficial to the improvement of the silt form in the open flow section of Xiaolangdi Reservoir and the control of the formation and extinction of the artificial molded density current in the Xiaolangdi Reservoir, to enhance the sediment discharge efficiency of the Xiaolangdi Reservoir, and to increase and restore the flood passing capacity of the main channel of the lower Yellow River. At the same time, it is beneficial to the improvement of sediment discharge and siltation in Sanmenxia Reservoir.
【作者单位】：黄河水利委员会三门峡水利枢纽管理局;
【分类号】：TV697.1

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