小浪底水库泄水孔洞调度方案比选研究  

Comparison of Operation Dispatch Scheme of the Discharge Outlets in the Xiaolangdi Reservoir

作　　者：江颖 李珍 安静泊 JIANG Ying;LI Zhen;AN Jingbo(Xiaolangdi Multi-Purpose Dam Project Management Center,Ministry of Water Resources,Zhengzhou 450000,China)

机构地区：[1]水利部小浪底水利枢纽管理中心,河南郑州450000

出　　处：《人民黄河》2020年第10期11-15,22,共6页Yellow River

基　　金：国家重点研发计划项目(2018YFC0407406)。

摘　　要：小浪底水利枢纽进水塔群前的泥沙淤积影响工程的安全运行和水库的发电效益,制定合理的泄水孔洞调度方案至关重要。为此采用立面二维水沙数学模型开展小浪底水库底孔防淤堵的数值模拟研究。在设计水沙条件下,计算和比较两种泄水孔洞运用方案对坝区河床纵剖面淤积形态、排沙比和发电效益的影响,结果表明:两种方案均能满足进水塔群防淤堵的要求,为尽可能发挥小浪底水库的发电效益,泄水孔洞调度方案推荐方案1,即出库流量小于发电洞泄流量时优先启用发电洞泄流,当出库流量超过发电洞泄流量时超出部分尽量通过排沙洞、明流洞、孔板洞泄流,减少库区淤积。Preventing sediment siltation in front of intake tower group of the Xiaolangdi Reservoir affects the safety operation and the genera⁃tion benefits of the project.It is vital to determine a proper operation dispatch scheme of the outlet structures.This paper did the numerical re⁃search on the prevention of silt plug in the Xiaolangdi Reservoir by a vertical 2D numerical model.The bed evolution,sediment delivery ratio and generation benefit were discussed under typical water and sediment conditions with the two different dispatch schemes of the outlets.The results of the numerical modeling show that neither of the dispatch schemes will cause the sediment siltation and the scheme 1 shows a better performance in promoting the generation benefits.The present work provides the technical support for the operation dispatch scheme of outlets in engineering practices.

关 键 词：小浪底水库 防泥沙淤堵 立面二维水沙数学模型 泄水孔洞调度方案 

分 类 号：TV697.1[水利工程—水利水电工程] TV882.1