水力发电2025，Vol.51Issue(5)：8-16,24,10.
长江口新桥水道冲淤演变特征及归因分析
Evolution Characteristics and Attribution Analysis of Scouring and Sedimentation in the Xinqiao Channel of Yangtze River Estuary
摘要
Abstract
In order to explore the characteristics and influencing factors of the evolution of mudflat topography and siltation in the Xinqiao Channel of Yangtze River estuary,the maps of geomorphic morphology,siltation,and flow velocity and direction are drawn by ArcGIS and MIKE21 software respectively based on the measured underwater topographic data from 1983 to 2023,and the overall and zoning,qualitative and quantitative methods are used to analyze the characteristics of geomorphic morphology and siltation.The driving factors of geomorphologic changes in the study area are analyzed from the aspects of upstream water and sand inflow,north branch backflow,engineering construction,and sediment movement.The results show that:the upper part of study area shows a trend of siltation,the middle part is slightly silted,and the lower part is slightly flushed;the development of the Biandansha sand interacts with the morphology of the Xinqiao Channel;the construction of the Dongfengxisha Reservoir has a constraining influence on the geomorphologic evolution,especially in the upper part of the area.The results of the study can provide reference for the analysis of mudflat evolution and the comprehensive management of mudflat in Yangtze River estuary.关键词
冲淤演变/地貌形态演变/ArcGIS/河口滩涂/新桥水道/长江口Key words
scouring and sedimentation evolution/geomorphologic evolution/ArcGIS/estuary mudflat/Xinqiao Channel/Yangtze Estuary分类
水利科学引用本文复制引用
陈思元,方园皓,刘羽婷,徐双全,蒋晓雯,张行南..长江口新桥水道冲淤演变特征及归因分析[J].水力发电,2025,51(5):8-16,24,10.基金项目
国家重点研发计划项目(2019YFC0409000) （2019YFC0409000）
上海市海洋局科研项目(沪海科2024-01号) （沪海科2024-01号）
