荆江-洞庭湖水沙变化影响分析

穆锦斌; 张小峰

引用本文:	穆锦斌,张小峰.荆江-洞庭湖水沙变化影响分析[J].水利水运工程学报,2011,(1):

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荆江-洞庭湖水沙变化影响分析
穆锦斌¹,张小峰²
1. 浙江省水利河口研究院,浙江,杭州,310020 2. 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072

摘要:

荆江—洞庭湖水沙输移变化直接影响整个长江中游的防洪形势.通过实测资料分析了江湖水沙输移变化对荆江和洞庭湖的影响,分析表明,江湖水沙输移的调整变化引起下荆江流量的增加及城螺河段的淤积,城陵矶水位逐渐抬升,对荆江及洞庭湖防洪形势构成巨大威胁.采用河网水沙数学模型对三峡水库蓄水初期下游河道水沙输移变化及其影响进行了初步预测.计算结果表明,长江干流河道的冲刷使得荆江及洞庭湖区最高洪水位降低,防洪形势进一步缓和.

关键词: 水沙输移河网模型防洪

DOI：

分类号:TV143

基金项目:

Analysis on water-sediment transportation variation of Jingjiang River-Dongting Lake

MU Jin-bin¹,ZHANG Xiao-feng²

MU Jin-bin1,ZHANG Xiao-feng2(1.Zhejiang Institute of Hydraulics and Estuary,Hangzhou 310020,China,2.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)

Abstract:

The change of water-sediment transportation affects the flood control situation of the middle reaches of the Yangtze River.Based on the field data,the water-sediment transportation laws and effects are studied in this paper.Analysis results show that the variation caused the discharge increase of the Jingjiang River and the siltation in the Chenglingji-Luoshan reach.The water level of Chenglingji rises gradually,and it seriously imperils the flood control situation of the Jingjiang River and Dongting Lake.U...

Key words: water-sediment transport river network's mathematical model flood control