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- Title
黄河河口不同流路入海泥沙对下游影响二维数模分析.
- Authors
李东风; 张红武; 钟德钰; 胡建永; 马梁超; 江曹栋
- Abstract
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 estuarine in the early stage of planning and operation were calculated and the marine dynamics and sediment movement of the three channels into the estuary were ananlyzed. 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 Consulting 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 l0.23 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.
- Publication
Yellow River, 2021, Vol 43, Issue 5, p17
- ISSN
1000-1379
- Publication type
Article
- DOI
10.3969/j.issn.1000-1379.2021.05.004