人民长江2018，Vol.49Issue(4)：40-42,48,4.DOI:10.16232/j.cnki.1001-4179.2018.04.008
东荆河水文特性变化分析研究
Variation analysis on hydrologic characteristics of Dongjing distributary
徐德龙 1李彬彬1
作者信息
- 1. 长江水利委员会水文局,湖北武汉430012
- 折叠
摘要
Abstract
The Dongjing distributary is an important floodway of releasing the Hanjiang River flood in the lower Hanjiang River into the Yangtze River,its variation of flow and sediment diversion not only affects the flood control, water resource utilization and navigation of this basin, but also affects the flood control of the Hanjiang River and the Yangtze River.Based on a large quantity of measured hydrological data,the laws of runoff and sediment diverted from the Dongjing distributary were systematically analyzed.The results showed that:the average annual 4.25 billion m3water was discharged into the Dongjing Distributary,ac-counting for 9.1%of the Hanjiang River,and the flow diversion ratio changed obviously since the completion of upstream Dan -jiangkou Reservoir;the average sediment of 5.835 million t was discharged, accounting for 13.5% of the Hanjiang River, the average sediment of 5.835 million t was discharged,accounting for 13.5%of the Hanjiang River;the flood peak flow diversion ratio was reduced from 22.7%to 17.9%.By the regulation of Danjiangkou Reservoir,the days of zero-flow were reduced.In addition,affected by clear water discharging,the river bed of the Dongjing Dstributary was obviously scoured and the dry -up water level fell.The research results have a certain reference value for the river regulation, water resource utilization and flood control of the Dongjing River and the middle and lower reaches of Hanjiang River.关键词
水沙特性变化/分流分沙/洪峰分流比/丹江口水库/东荆河/汉江Key words
water and sediment variation characteristics/flow and sediment diversion/flood peak flow diversion ratio/Dan-jiangkou Reservoir/Dongjing River/Hanjiang River分类
天文与地球科学引用本文复制引用
徐德龙,李彬彬..东荆河水文特性变化分析研究[J].人民长江,2018,49(4):40-42,48,4.
