水利水电科技进展2018，Vol.38Issue(2)：49-56,8.DOI:10.3880/j.issn.1006-7647.2018.02.009
三峡库区草堂河库湾水动力特征
Study on hydrodynamic characteristics of Caotang Bay in Three Gorges Reservoir area
摘要
Abstract
Water intrusion from the mainstream into tributaries frequently occurs since the Three Gorge Reservoir (TGR) impounded. To explore the hydrodynamic characteristics of the mainstream-tributary water exchange process, field observation was carried out to obtain the monthly data (from September 2012 to July 2013), including the hydrodynamic parameters,temperature and turbidity of the Caotang River,a typical tributary in the central area of TGR. Water exchange in different impoundment periods and its influences on water environment of the reservoir were analyzed. The results show that there is a clear bi-directional flow structure in the estuary of the Caotang River and the distribution patterns of the inward and outward flow varies in different periods at the mainstream-tributary interface. The effective flow exchange in most months of a year at the estuary of the Caotang River is higher than that in other tributaries due to the unique river orientation. The water in the mainstream can intrude into the end of Caotang Bay all year round. During the high water level operating periods,inflow and outflow in the estuary shows vertical stratification and good continuity while during the low water level operating periods,horizontal circulation occurs with poor continuity.关键词
干支流界面/水交换/异重流/草堂河库湾/三峡库区Key words
tributary interfaces/water exchange/density current/Caotang Bay/Three Gorges Reservoir area分类
建筑与水利引用本文复制引用
李昶,邓兵,汪福顺,周子然..三峡库区草堂河库湾水动力特征[J].水利水电科技进展,2018,38(2):49-56,8.基金项目
国家水体污染控制与治理科技重大专项(2012ZX07104-001) （2012ZX07104-001）
国家重点研发计划(2016YFA0600904) （2016YFA0600904）
国家自然科学基金(41271519) （41271519）
