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长江口被崇明岛分为南北两支。北支河床日益淤浅,出现了沙岛行将北向并岸的趋势。这完全符合一千多年来长江口的演变规律。应利用水丰沙富的有利条件,促使北支早日成陆。江心沙和团结沙的工程实例证明,人工促淤的效果是显著的。按照实际状况提出了四项堵坝方案。建议及早制定开发利用北支的规划,通过工程促淤,可早日获得土地,以便因地制宜,综合利用。
The Yangtze River estuary was divided into two north-south Chongming Island. North Branch of the growing dilapidation of the river bed, there has been the trend of sand island will go north and shore. This is in full compliance with the evolution of the Yangtze Estuary over a thousand years. The favorable conditions for water-rich sand should be used to promote the early development of the North Branch. The engineering examples of Jiangxinsha and Tuanjiesha prove that the effect of artificial siltation is obvious. In accordance with the actual situation proposed four blocking program. It is suggested that a plan for the development and utilization of the North Branch should be formulated as early as possible. Through promoting siltation through projects, land can be obtained as early as possible in order to make comprehensive utilization according to local conditions.