长江武汉阳逻水道河势演变分析

Analysis of river regime evolution in the Yangluo Waterway of the Yangtze River in Wuhan

阳逻水道位于长江武汉段,为顺直微弯型河段,为在此建设中远海运码头工程,需要对其开展河势演变分析。本文基于长系列实测水文泥沙资料,对该河段历史演变情况进行简介,并从深泓线、洲滩、深槽、天兴洲分汊分流比变化等方面重点介绍了河段近期演变情况,从深泓线、深槽和典型横断面变化等方面对工程河段演变情况进行详细论述。结果表明,在上游来水来沙及河势条件保持稳定的情况下,天兴洲汊道和阳逻水道河势将保持基本稳定;考虑三峡工程调蓄影响后,天兴洲左汊将发生小程度淤积,但分汊河型仍保持不变,阳逻水道总体河势将保持基本稳定。

The Yangluo Waterway is located in the Wuhan section of the Yangtze River,characterized by a straight to slightly meandering river segment.A construction project for a long-distance shipping terminal is planned in this area,necessitating an analysis of riverbed evolution.This paper is based on a long series of measured hydrological and sediment data,providing an overview of the historical evolution of this river section.It focuses on recent changes in the river segment,including variations in the thalweg line,sandbars,deep channels,and flow distribution in areas such as Tianxingzhou.The paper presents a detailed discussion of the evolving conditions in the project river segment,including changes in the thalweg line,deep channels,and typical cross-sections.The results indicate that,with stable upstream water and sediment input and consistent hydraulic conditions,the riverbed in the Tianxingzhou channel and the Yangluo Waterway will remain relatively stable.After accounting for the impact of the Three Gorges Project regulation,there will be minor sedimentation in the left channel of Tianxingzhou,but the overall river morphology will remain unchanged,and the Yangluo Waterway’s riverbed will remain essentially stable.