摘要
2010年7月中下旬,长江上游出现三峡水库蓄水以来的最大洪水。根据三峡水库上游干支流主要水文站的水位流量资料,对库区的洪水过程进行了分析。受三峡水库蓄放水影响,库区的水位及水面线变化为非天然状态。在洪水期,当三峡水库坝前水位低于150.00 m时,与天然状态相比,寸滩站水位流量关系无明显变化;随着上游来水的增加,坝前水位不断上升,当三峡水库坝前水位超过156.00 m时,寸滩站水位流量关系则受洪水涨落和三峡水库回水顶托的综合影响。
The biggest flood in upper Yangtze River after TGP completion occurred in July,2010.According to measured water level and discharge data at main hydrological stations on the main stem and branches of the Yangtze River,the flood process in the TGP reservoir area was analyzed.Influenced by flood storage and release of TGP reservoir,the variation of water level and water surface profile of the reservoir were in unnatural state.During flood period,when the water level at dam site of TGP was lower than 150.00m,in contrast to the natural state,the relation between water level and discharge at Cuntan station had no obvious variation;and when water level at dam site was higher than 156.00m,the relation was influenced by flood rise and fall as well as backwater of TGP reservoir.
出处
《人民长江》
北大核心
2010年第21期39-41,共3页
Yangtze River
关键词
洪水
水面线
水位
流量
三峡水库
flood
water surface profile
water level
discharge
TGP reservoir
