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《Journal of Hydroelectric Engineering》 2013-01
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Study on evolution mechanism and development trend of the goose-head pattern braided channel in the middle and lower Yangtze River

LI Ming1,2,ZHU Lingling3,LI Yitian1,GE Hua4(1.State Key Laboratory of Water and Hydropower Engineering Science,Wuhan University,Wuhan 430072; 2.Changjiang Waterway Planning Design and Research Institute,Wuhan 430011; 3.Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010; 4.Department of River Dynamic,Changjiang River Scientific Research Institute,Wuhan 430010)  
For a goose-head pattern braided channel in the middle and lower Yangtze,its evolution characteristics is analyzed in this paper,including the cyclical vibrations of its river regime and the features of its islet channel deformation.The mechanism of its inherent evolution is revealed through an analysis on the flow deflecting effects of its rocky heads,mainstream swing,and the changes in the river regime upstream to it.According to the variations of flow,sediment and river bed in the middle and lower Yangtze caused by the impoundment of the Three Gorges reservoir,the evolution trend is predicted for channels of such type.
【Fund】: 国家“973”项目课题“长江中游通江湖泊江湖关系演变过程与机制”(2012CB417001);; 国家自然科学基金(51009109);; 交通运输重大科技专项-黄金水道通过能力提升技术(2011-328-548-50 2011-328-224-30)
【CateGory Index】: TV147.4
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