长江中游牯牛沙水道河床演变及治理措施

牯牛沙水道位于长江中游,由双节点控制下的限制性弯道段和顺直段组成。本水道航道条件曾一直保持良好,然而近年来航道条件出现向不利方向转化的趋势,且时有碍航情况发生。结合牯牛沙水道实测的水沙资料,分析本水道河床演变特点和碍航特性,揭示滩槽演变的影响因素。在此基础上,提出相应的治理措施,可为工程实践提供参考。

River-bed evolution and regulation measures of Guniusha waterway in the middle Yangtze River

Guniusha waterway, which is located in the middle Yangtze River, is composed of the restrictive bend and straight segments which are under the control of the double nodes, and has always been maintaining favorable channel conditions. However, in recent years the waterway condition turns adverse and navigation obstruction occurs constantly. Based on the real-measured water and sediment data of Guniusha waterway, this paper analyzes the river bed evolution and navigation obstruction characteristics, reveals the factors which impact the evolution, and proposes corresponding regulation measures, which provides a reference for the engineering practice.