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赣江是长江水系中的第二大支流 ,它发源于闽赣交界的武夷山区 ,其主支流—西支在永修县吴城镇注入鄱阳湖 ,再经星子湖口入长江。介绍了赣江尾闾地区南昌段的水系特点和水文泥沙基本情况 ,对 1987～ 1992年四级航道整治后南昌段东西河分流处的河床演变进行了分析 ,并探讨了其变化的原因 ,着重分析了东西河分流比随上游来流量而变化的原因和对策 ;对赣江主航道—西河进口的两个浅滩的变化进行了分析。赣江南昌至吴城段河面宽阔 ,比降平缓 ,来水量丰富 ,含沙量很小 ,具有发展水运的优越条件 ,赣江南昌—湖口航道整治成为三级航道是完全有可能的。
Ganjiang is the second largest tributary of the Yangtze River system. It originates from Wuyi Mountain at the junction of Fujian and Jiangxi. Its main tributary, the western branch, is injected into Poyang Lake in Wucheng Town, Yongxiu County, and then enters the Yangtze River through Xingzihu Lake. This paper introduces the characteristics of the water system and the basic conditions of hydrology and sediment in Nanchang section of the tailrace area of Ganjiang River. The paper analyzes the riverbed evolution of Dongxi River diversion in Nanchang section of 1987-1992, and discusses the reasons for the changes. The causes and countermeasures of the diversion ratio of East and West rivers changing with the upstream flow were analyzed. The changes of two shoal shores of the main waterway of the Ganjiang River, which were imported, were analyzed. The Nanchang-Wucheng section of the Ganjiang River has a wide river surface, a gentle slope, a large amount of water, and a low sediment concentration. It has the favorable conditions for the development of water transport. It is entirely possible that the Nanchang-Hukou Channel of the Ganjiang River will become a tertiary channel.