长江科学院院报2011，Vol.28Issue(9)：75-79,5.
三峡水库运用前后进出库水沙变化分析
Changes of Inflow and Outflow Runoff and Sediment of Three Gorges Reservoir Before and After the Impoundment
摘要
Abstract
The changes of inflow and outflow runoff and sediment of the Three Gorges Reservoir before and after the impoundment are systematically analyzed based on the observed data of hydrographic stations. The results reveal that since the 1990s, the inflow-outflow runoff and sediment have both reduced, of which the sediment discharge reduced much more remarkably than the runoff. In recent years, the inflow-outflow runoff and sediment during flood season remain above 76% and 96% of the whole year. In terms of annual distribution, the inflow runoff and sediment in flood season both exhibit a tendency of decreasing; whereas the outflow runoff tends to decrease and the outflow sediment tends to increase in flood season. After the impoundment, the inflow and outflow water and sediment decreased sharply in September and October, while increased in dry season from February to April.关键词
三峡水库/水沙变化/年内分配/寸滩/宜昌Key words
Three Gorges Reservoir/ water-sediment changes/ annual distribution/ Cuntan station/ Yichang分类
建筑与水利引用本文复制引用
黄仁勇,张细兵..三峡水库运用前后进出库水沙变化分析[J].长江科学院院报,2011,28(9):75-79,5.基金项目
中央级公益性科研院所基金项目(CKSF2011001) （CKSF2011001）
水利部公益性行业专项(200901002,200901003) （200901002,200901003）
国家科技支撑计划研究项目(2008BAB29B08) （2008BAB29B08）
