摘要
长江下游三沙河段(福姜沙、通州沙、白茆沙河段)是长江南京以下重要的碍航浅段,其河床演变规律是实施航道整治工程重要的理论依据。利用现场调研及多年实测资料,结合理论知识,通过分析三沙河段主流线及深泓线的变化特征,得出其河床演变宏观规律,结果表明上、下游河段之间的河床演变具有一定的关联性,上游主流摆动影响下游河床演变,在鹅鼻嘴、九龙港和徐六泾等天然节点及人工护岸工程的控制作用下,如皋沙群段与通州沙河段演变关联性不再明显,通州沙河段与白茆沙河段演变关联性减弱。
The Three Sand Shoals Reach（Fujiang Sand Shoal,Tongzhou Sand Shoal and Baimao Sand Shoal） on the lower Yangtze River is an important navigation-obstructing shoal reach below Nanjing reach. In order to provide the theoretical foundation for waterway regulation engineering,it is necessary to analyze the riverbed evolution law of the Three Sand Shoals Reach. Making full use of site investigation and annual survey data, based on theoretical analysis,the riverbed evolution law was analyzed from the aspect of mainstream and talweg changes. The analysis results demonstrate that there is riverbed evolution relevance between upstream and downstream reach. The riverbed evolution of the downstream reach is caused by the mainstream swings of upstream. Under the controlling of nodes and waterway regulation engineering,such as Xuliujing node, Jiulonggang node and Ebizui node, the riverbed evolution relevance has been reduced.
出处
《水道港口》
2013年第5期413-419,共7页
Journal of Waterway and Harbor
基金
西部交通建设科技项目(2011 328 746 60)
关键词
河床演变
关联性
节点
航道整治
三沙河段
riverbed evolution
relevance
node
waterway regulation
the Three Sand Shoals Reach
