River evolution and waterway regulation of Zhijiang-Jiangkou section at midstream of the Yangtze River

Based on the existed research results and field data,this paper analyzes the recent evolution regularity,navigation-obstruction characteristics,as well as main problems of the waterway,and then predicts the river evolution trend according to the model results.Firstly,the necessity of waterway regulation project is analyzed.According to the development demands of the reach,this paper discusses the necessity of waterway regulation in the reach,and then proposes the regulation ideas and tentative scheme under consideration of the navigation-obstruction characteristics and waterway regulation targets.The research results concerning the bed evolution,navigationobstruction characteristics and scheme comparison and selection may serve as reference for the follow-up systematic regulation engineering.