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《Yangtze River》 2018-18
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Analysis of sediment scouring and silting in water intake area of south bank power plant in Hangzhou Bay

ZHANG Bohu;GU Weifang;Zhejiang Provincial Key Laboratory of Estuary and Coast,Zhejiang Institute of Marine Planning and Estuary;  
The scouring and silting in marine area of water intake is the core factor for level design of water intake of a power plant,on south bank in Hangzhou Bay. On the basis of topographical data in different historical periods,and by considering the law of water and sediment movement,human activities,we analyzed the law and trend of seabed evolution by 2 D flow and sediment mathematical model. The results showed that the seabed is part of the south bank shoal; the seabed is in slow siltation chronically regardless of short-term scour effect caused by reclamation,at a deposition rate of around 0. 04 meters per year. Seabed siltation is caused by sediment transportation of coastal current and human activities such as sea reclamation. After construction,seabed of water intake area is still in siltation,and the projects to be constructed in nearby area also contribute to siltation of 0. 2 meters.
【Fund】: 国家自然科学基金项目“多时间尺度下的杭州湾沉积、地貌动力系统转换过程与机制”(41676085);; 浙江省自然科学基金项目“近30年杭州湾悬沙输移变异及机制”(LY16D060004);; 浙江省水利科技计划项目“杭州湾表层悬浮泥沙时空变化的遥感反演与分析”(RC1630)
【CateGory Index】: TV148
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