摘要
根据金沙江下游主要控制水文站的水沙资料,对不同时段不同区间的水沙变化特性进行统计分析,并采用输沙法计算溪洛渡和向家坝梯级水库运用以来的拦沙情况。研究结果表明,攀枝花站以上流域为少水少沙区,攀枝花至白鹤滩区间(不含雅砻江)为少水多沙区,白鹤滩至向家坝区间为多水多沙区。金沙江下游干流代表水文站的水沙相关关系以沙量单向减少为主。2013-2016年溪洛渡、向家坝水库的年平均联合拦沙量为10 519万t,占来沙量的98%以上,水库拦沙是金沙江下游水沙变化的主导因素。
Based on the runoff and sediment data of the main hydrological stations in the lower reach of the Jinsha River,the runoff and sediment processes in different reaches and different period of the lower reaches in the Jinsha River were analyzed.The deposition in the Xiluodu and Xiangjiaba reservoirs were calculated.Results show that the watershed above Panzhihua Station is a small water and sand area;the Panzhihua to Baihetan area(excluding the Yalong River)is a small water and sand area;and the Baihetan to Xiangjiaba area is a water-sandy plenty area.The sediment transport modulus of the tributaries of the Yalong River Basin,Longchuan River,Heishui River and Meigu River are lower than the main stream interval.Water-sand correlation relationship and double-accumulation relationship between water and sediment in representative stations of the lower reach main stream of the Jinsha River are reduction significantly.Reservoir deposition is the main factor for the processes of water and sediment in the lower reach of the Jinsha River.From 2013 to 2016,the average annual deposition in Xiluodu and Xiangjiaba Reservoirs were 105 million tons.
作者
秦蕾蕾
董先勇
杜泽东
陈绪坚
QIN Lei-lei;DONG Xian-yong;DU Ze-dong;CHEN Xu-jian(China Three Gorges Corporation,Beijing100038,China;China Three Gorges Projects Development Co.,Ltd,Chengdu610041,China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,Laboratory of Hydraulics and Sediment Science andRiver Training of Ministry of Water Resources,China Institute of Water Resources and Hydropower Research,Beijing100048,China)
出处
《泥沙研究》
CSCD
北大核心
2019年第3期24-30,共7页
Journal of Sediment Research
基金
国家重点研发计划课题(2016YFC0402104)
关键词
金沙江下游
水沙变化
梯级水库
水库拦沙
lower reach of Jinsha River
processes of water and sediment
cascade reservoirs
reservoir deposition
作者简介
秦蕾蕾(1987-),女,湖北荆门人,博士,主要从事水力学及河流动力学方面研究。E-mail:qin_leilei1@ctg.com.cn;通讯作者:董先勇。E-mail:dong_xianyong@ctg.com.cn
