长江口岸直水道泰兴顺直段近期演变分析

泰兴顺直段是长江下游主要碍航浅滩之一。历年河道实测水文、地形资料表明,该段多年来河道外形相对稳定,但深泓线以及滩槽变化较大。深泓线年际间发生大幅度摆动,鳗鱼沙心滩具有易变反复,不易消失的演变特点,左、右槽主支地位交替发展。并且该河段演变受特大洪水影响很大,甚至出现滩槽易位现象。

Analysis on recent evolution of Taixing straight stream in the Yangtze River Estuary

Taixing straight stream is one of the main shoals obstructing the navigation in downstream of the Yangtze River.Based on the observed hydrologic and topographic data,it shows that the river boundary is relatively stable,but the thalweg and swale have comparatively large variation.The annual change of the thalweg is very significant.The Manyusha shallow changes recurrently and it is not easy to disappear.The main swale is alternative between the left and right deep groove.The bed evolution is influenced by e...