荆江-洞庭湖水沙关系及调整  

Water-sediment relation between Jingjiang River and Dongting Lake and its adjustment

作　　者：吴作平[1] 杨国录[1] 甘明辉 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072 [2]湖南省水电厅洞庭湖工程局,湖南长沙410007

出　　处：《武汉大学学报（工学版）》2002年第3期5-8,共4页Engineering Journal of Wuhan University

基　　金：国家自然科学基金重大项目资助课题 (5 0 0 996 2 0 )

摘　　要：系统分析了洞庭湖复杂的来水来沙条件和湖区淤积情况 ,荆江 -洞庭湖水沙关系 ,洞庭湖出流对荆江各河段不同的顶托作用 ,以及荆江裁弯后江湖水沙关系的变化和调整 ;研究了江湖水沙关系的变化对荆江各河段以及洞庭湖水沙条件和河床演变的不同影响 .认为荆江裁弯后 ,三口入湖水沙减少 ,减缓了洞庭湖的淤积和防洪压力 ,但同时荆江泄流量加大 ,局部河段防洪形势更为严峻 。The article analyzes the complicated condition of water and sediment upward, the deposition of the Dongting Lake, the influence of flood out of the Dongting Lake to the Jingjiang River, the relation between the Jingjiang River and the Dongting Lake and its adjustment after the Jingjiang cut off and the Three Gorges Project has been completed; as well as its influences to the evolutions of all reaches of the Jingjiang River and the Dongting Lake. The article also points out that the deposition in the Dongting Lake and its pressure of flood prevention could be remitted, but the charge in the Jingjiang River became larger, and the situation of flood prevention in crippling reach of the Jingjiang River will be worse.

关 键 词：荆江 洞庭湖 裁弯 演变 防洪 

分 类 号：TV876[水利工程—水利水电工程]