摘要
利用干支流祁连、扎马什克、黄藏寺、莺落峡等水文站实测资料,分析了黄藏寺水利枢纽所在流域具有的水量年际变化小、沙量年际变化大、水沙年内分配不均、沙量主要来自洪水期等水沙特性。采用输沙模数计算年入库悬移质沙量为169.7万t;采用推悬比法和经验公式法对比分析计算,推荐年入库推移质沙量为33.9万t。在1968—2012年实测入库水沙资料的基础上,再利用5 a滑动计算从中选取5 a水沙系列组成50 a水沙系列。采用一维水文水动力学泥沙冲淤计算模型进行计算,水库计算期排沙比为22.6%,50 a共淤积泥沙0.628亿m3,最大日出库含沙量为6.84 kg/m3。水库淤积形态为三角洲淤积,坝前淤积高程为2557 m。
Based on the measured data from the hydrological stations of Qilian, Zhamashik, Huangzangsi and Yingluoxia on the main tributa ries, this paper analyzed the characteristics of water and sediment in the basin where the Huangzangsi Water Control Project is located, such as small inter annual variation of water volume, large inter annual variation of sediment volume, uneven distribution of water and sediment volume in the year and the fact that the sediment volume mainly comes from flood period. The sediment erosion modulus method was used to calculate the annual amount of suspended sediment deposited in the reservoir to be 1.697 million tons. The recommended annual amount of bed load sediment is 0.339 million tons. On the basis of the measured data of reservoir water and sand from 1968 to 2012, 5 a water and sand series were selected from the 5 a water and sand series to form 50 a water and sand series with 5 a sliding calculation. The one dimensional hydrodynamics sediment erosion and sedimentation calculation model was adopted for calculation. The sediment discharge ratio in the calcu lated period of the reservoir was 22.6%, the total sediment deposition in 50 a was 62.8 million m3, and the maximum sediment concentration in the daily reservoir was 6.84 kg/m3. The reservoir siltation form is delta siltation and the siltation elevation in front of the dam is 2 557 m.
作者
李庆国
段高云
郭其峰
成鹏飞
LI Qingguo;DUAN Gaoyun;GUO Qifeng;CHENG Pengfei(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)
出处
《人民黄河》
CAS
北大核心
2019年第12期16-19,共4页
Yellow River
基金
国家重点研发计划项目(2017YFC0405504)
关键词
黄藏寺水利枢纽
工程泥沙
水沙系列
淤积形态
冲淤计算
Huangzangsi Reservoir
engineering sediment
water and sediment series
silting patterns
scouring and silting calculation
