水利水电科技进展2017，Vol.37Issue(3)：42-48,7.DOI:10.3880/j.issn.10067647.2017.03.007
三峡库区梅溪河河口干支流界面水流特征
Characteristics of flow at interface between Yangtze River and Meixi River in Three Gorges Reservoir area
摘要
Abstract
Based on analyses of the hydrodynamic parameters, turbidity, and temperature of water in the bay of the Meixi River, a typical tributary in the middle area of the Three Gorges Reservoir area, the characteristics of flow at the interface between the mainstream and the tributary during different operation stages of the Three Gorges Reservoir were investigated, and the factors influencing the flow characteristics and the influence of water exchange on the bay are discussed. The results show that the flow is bidirectional in the Meixi Estuary. Driven by the thermal density flow, the inertia of mainstream flow, and changes in the reservoir water level, the flow intensity at the interface and the structure and pattern of the interface between the inflow and outflow differed in different operation stages. The net flux is low ( mostly below 100 m3/s) , while the water exchange volume ( from 314. 17 to 535. 26 m3/s, about 4 to 40 times the net flux) is relatively large at the interface in the Meixi River Estuary because of the bidirectional flow. The mainstream inflow could reach the end of the perennial backwater zone even during the low-water level stage with minimum net flux.关键词
支流河口/库湾/水交换/异重流/环境影响/梅溪河/三峡库区Key words
tributary estuary/bay/water exchange/density current/environmental impact/Meixi River/Three Gorges Reservoir分类
建筑与水利引用本文复制引用
王洪波,邓兵,汪福顺,罗光富..三峡库区梅溪河河口干支流界面水流特征[J].水利水电科技进展,2017,37(3):42-48,7.基金项目
国家自然科学基金(41271519) （41271519）
国家水体污染控制与治理科技重大专项(2012ZX07104-001) （2012ZX07104-001）
