黄河河口不同流路入海泥沙对下游影响二维数模分析  

Preliminary Impact Analysis of the Yellow River Estuary Sediment on the Lower Reaches Based on 2D Numerical Simulation

作　　者：李东风 张红武[2,3] 钟德钰[3,4] 胡建永 马梁超 江曹栋 LI Dongfeng;ZHANG Hongwu;ZHONG Deyu;HU Jianyong;MA Liangchao;JIANG Caodong(Key Laboratory for Technology in Rural Water Management of Zhejiang Province,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China;Yellow River Research Center,Tsinghua University,Beijing 100084,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;State Key Laboratory of Plateau Ecology and Agriculture,Qinghai University,Xining 810016,China;Institute of Water Resources and Ocean Engineering,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China;School of Naval Architecture and Maritime,Zhejiang Ocean University,Zhoushan 316022,China)

机构地区：[1]浙江水利水电学院水利与环境工程学院农村水利水电资源配置与调控关键技术浙江省重点实验室,浙江杭州310018 [2]清华大学黄河研究中心,北京100084 [3]清华大学水沙科学与水利水电工程国家重点实验室,北京100084 [4]青海大学省部共建三江源生态与高原农牧业国家重点实验室,青海西宁810016 [5]浙江水利水电学院水利与海洋工程研究所,浙江杭州310018 [6]浙江海洋大学船舶与海运学院,浙江舟山316022

出　　处：《人民黄河》2021年第5期17-23,29,共8页Yellow River

基　　金：国家重点研发计划项目(2016YFC0402502,2016YFC0402500)。

摘　　要：黄河河口入海泥沙在涨潮流和拦门沙的阻滞作用下对黄河下游泥沙运动产生重大影响。以已建立的河口海洋水沙二维数学模型为基础,对规划运用初期的清水沟北汊流路、刁口河流路和十八户流路典型水沙过程进行了计算,分析了3条流路入海口的海洋动力和泥沙运动,得到了入海泥沙对黄河下游的影响范围为距泺口断面90~215 km。研究了未来50 a进入下游的水沙设计和流路规划成果,采用清水沟、刁口河联合运用方案,计算了未来50 a入海水沙运动对下游的影响,结果表明:在此方案下,西河口水位维持在10.23~11.18 m。结合黄河三角洲高效生态经济区发展需求,清水沟和刁口河联合运用方案为最优方案,十八户流路海域封闭且海洋动力比较弱,可以作为远景备用流路。The sediment flowing into the Yellow River estuary has a great influence to the sediment movement in the lower Yellow River under the blocking action of the tidal current and sandbars.Based on the established two⁃dimensional mathematical model of estuarine water and sediment,the typical water and sediment processes of North Branch estuarine of Qingshuigou,Diaokou River estuarine and Shibahu River es⁃tuarine in the early stage of planning and operation were calculated and the marine dynamics and sediment movement of the three channels in⁃to the estuary were analyzed.The results show that the influence range of sediment to the lower Yellow River is 90-215 km away from Luokou section.The results of water and sediment design and flow path planning in the next 50 years were studied.The combined operation scheme 4 of Qingshuigou and Diaokou rivers recommended by China Institute of Water Resources and Hydropower and Yellow River Engineering Con⁃sulting Co.,Ltd.was adopted to calculate the impact of water and sediment movement on the downstream in the next 50 years.The results show that under this scheme,the water level of Xihekou will be maintained between 10.23 m and 11.18 m.Combined with the development needs of the efficient ecological economic zone in the Yellow River delta,scheme 4 of the joint operation of Qingshuigou and Diaokou river is the optimal flow path and the sea area of Shibahu flow path is closed and the marine power is relatively weak,so it can be used as the future backup flow path.

关 键 词：黄河河口 二维数学模型 入海泥沙 黄河下游 清水沟流路 刁口河流路 十八户流路 

分 类 号：TV142[水利工程—水力学及河流动力学] TV882.1