摘要
针对泾河河流含沙量高,电站运行工况复杂的实际情况,通过分析泾河干流(电站取水口)1994—2009年水文数据,研究了泾河来水来沙变化特点及对电站运行的影响。结果表明,在强烈的区域水土保持措施的作用下,泾河近16a来年径流量和输沙量均呈明显下降趋势;河道来水来沙年内分布极不均匀,汛期来水来沙分别占全年来水来沙量的64.6%和92.6%,尽管来沙量减少但汛期河水含沙量仍然很高。针对泾河来水来沙变化特点,进一步探讨了泾河来水来沙对电站运行的影响,并初步给出了高含沙条件下几种保证电站正常运行的对策。
In consideration of the high sediment concentration in Jinghe River and the complexity of the power station operation,the characteristics of water and sediment in Jinghe River and their effects on power generation were studied by analyzing the hydrological data of water intake of power station from 1994 to 2009.Results showed that annual runoff and sediment yield presented a significant trend of decrease,which was closely related to the construction of soil and water conservation in Jinghe River basin.Runoff and sediment were unevenly distributed during a year,mainly in the flood season,and the amounts accounted for 64.6% and 92.6% of the whole year,respectively.However,sediment concentration in flood season was still high.Based on the change characteristics of water and sediment in Jinghe River,the effects of water and sediment on power generation were further discussed and several countermeasures ensuring the normal operation of the power station under high sediment concentration were preliminarily given.
出处
《水土保持通报》
CSCD
北大核心
2010年第6期166-169,共4页
Bulletin of Soil and Water Conservation
基金
国家水体污染控制与治理科学重大专项(2009ZX07212-002-003-002)
