长江口上海段采砂工程对河道的综合影响分析  

Analysis on Comprehensive Impact of Sand Mining Engineering on River Channel in Shanghai Section of the Yangtze River Estuary

作　　者：刘安民 LIU Anmin

机构地区：[1]上海市堤防泵闸建设运行中心,上海市200080

出　　处：《城市道桥与防洪》2024年第8期137-142,共6页Urban Roads Bridges & Flood Control

摘　　要：为进一步稳定长江口河势、保护生态基底、维护深水航道、合理利用航道疏浚土资源,从有利于河势和航运等角度出发,横沙浅滩固沙保滩稳定河势工程先行段2023年采砂选择了长江口上海段规划可采区周边、横沙浅滩砂源区作为砂源区取砂。采用SWEM3D模型分析采砂前后工程区附近的流速、流场、潮位、潮量、分流比等变化,并从河势、防洪、航道通航等方面分析了采砂对河道的综合影响,论证采砂的可行性,通过分析得出本工程采砂对长江口河道不会造成影响。In order to further stabilize the river regime of the Yangtze River Estuary,protect the ecological base,maintain the deep-water channel,and make the reasonable use of dredging soil resources in the channel,from the perspective of benefiting the river regime and navigation,the planned mineable area around the Shanghai section of the Yangtze River Estuary and the Hengsha Shallow Beach Sand Source Area were selected as the sand source area for sand excavation in 2023 in the pilot section of Hengsha Shallow Beach Sand Fixation and Stability River Regime Project.The SWEM3D model is used to analyze the changes in flow velocity,flow field,tidal level,tidal flow and diversion ratio near the engineering area before and after sand mining.The comprehensive impact of sand mining on the river channel is analyzed from the aspects of river regime,flood control and navigation.The feasibility of sand mining is demonstrated.It is concluded that sand mining in this project will not have an impact on the channel of Yangtze River Estuary.

关 键 词：长江口采砂 横沙浅滩 采砂对长江口河道影响分析 

分 类 号：U616[交通运输工程—船舶及航道工程]