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《Journal of Hydroelectric Engineering》 2012-05
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Change in relationship of Jingjiang river and Dongting lake after operation of Three Gorges Project

QU Geng1,2,GUO Xiaohu2,ZHU Yonghui2,LIU Ya2(1.State Key Laboratory of Water Resource and Hydropower Engineering Science,Wuhan University,Wuhan 430072; 2.Laboratory of River Regulation and Flood Control of MWR,Yangtze River Scientific Research Institute,Wuhan 430010)  
This article uses field data at the operation stage of Three Gorges reservoir to demonstrate changes in the relationship of the Jingjiang river and the Dongting lake caused by the reservoir impounding,in terms of water level responses in Jingjiang reach,changes in the runoff ratios of three Jingjiang-Dongting diversions,and water level responses at the Chenglingji station.Results show that in the upper Jingjiang,medium and low water levels have been lowered to some extent,while high level varied little.Similar responses in low water condition include a slight adjustment in the lower Jingjiang's water level,little responses in the flows of three diversions,and a slight falling in the Chenglingji's water level.During medium and lower water periods,however,the reservoir storage caused changes in all the three factors above.In summary,the river-lake relationship considered will maintain the present pattern at the Three Gorges operation stage.
【Fund】: 水利部水利前期项目:三峡工程运用初期荆江河道演变与治理研究(QQ0871/HL15);; 水利部公益性行业专项:大型水利枢纽工程下游河型变化机理研究(2007SHZ1-3)
【CateGory Index】: TV147
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