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长江口南槽铜沙航槽近几年一直是上海港通向外海的入海航槽。近来,航槽水深受九段沙南压的影响趋于恶化,给疏浚维护带来困难。于是考虑开挖北槽为深水入海航槽。本文利用南、北槽纵向同步水文观测历史资料,对比分析了咸、淡水混合的情况,旨在提出开挖北槽的有利因素。
In the recent years, the Yangtze River Estuary Southern slot Tongsha navigation slot has been the seaward navigation slot leading to the open sea from Shanghai Port. Recently, the influence of the water depth of the navigation channel on the Sardanian sand pressure tends to deteriorate, making it difficult to maintain dredging. So consider the North trench excavation for deep-water navigational slot. In this paper, the history data of longitudinal synchronous hydrological observation in the south and north trough are used to analyze the mixture of salty and freshwater. The purpose of this paper is to propose the favorable factors for excavating the north trough.