人民长江2016，Vol.47Issue(19)：37-41,5.DOI:10.16232/j.cnki.1001-4179.2016.19.007
葛洲坝-三峡水库不同蓄水阶段对中下游水沙影响
Impacts of different impoundment periods of Gezhouba and Three Gorges Reservoirs on flow and sediment load of mid-lower Yangtze River
摘要
Abstract
We select Gezhouba and Three Gorges cascade reservoirs as the research object and divide study periods into 4 sub-periods in accordance with different operation phases of the reservoirs. Based on daily water discharge and sediment concentra-tion data at Cuntan, Yichang, Hankou and Datong hydrological stations from 1954 to 2008, the change of sediment load and flow-sediment relationship of mid-lower Yangtze River under the operation of the cascade reservoirs is studied. The results reveal that the annual sediment load and sediment concentration at 4 hydrological stations are in a decreasing trend in general;the im-pact of the operation of cascade reservoirs on sediment load and flow-sediment relationship is related to the storage capacity and the distance from reservoir;the sediment decrease caused by reservoir retaining is related to seasonal distribution changes of run-off but not to the annual runoff volume variation;the annual distribution of monthly sediment load at Datong Station becomes more even due to the seasonal distribution changes of runoff volume and reservoir retaining.关键词
输沙量/水沙关系/葛洲坝水库/三峡水库Key words
sediment load/flow-sediment relation/Gezhouba Reservoir/Three Gorges Reservoir分类
天文与地球科学引用本文复制引用
高慧滨,梅王洁,郭田潇,周桐,国俊宝..葛洲坝-三峡水库不同蓄水阶段对中下游水沙影响[J].人民长江,2016,47(19):37-41,5.基金项目
长江学者和创新团队发展计划资助项目(IRT13062) （IRT13062）
江苏“世界水谷”与水生态文明协同创新中心(B08048) （B08048）
