摘要
采用描述江湖洪水运动的数学模型， 对长江中游１９９８ 年洪水进行实况复演和还原计算， 定量分析三口分流变化、洞庭湖湖容扩大、分蓄洪运用对荆江河段、洞庭湖区以及城陵矶至汉口河段水情的相对影响， 结合定性的物理解释， 深入探讨了１９９８ 洪水高洪水位的形成原因及其与江湖水情的相互作用规律， 并对退田还湖和三峡水库的防洪作用进行了论证。
The flood event in the middle Yangtze River(Changjiang River)in 1998 is simulated and rebuilt,utilizing a numerical model characterizing flood routing in the river lake system,to quantificationally analyze how the changes of three diversion rivers along Jingjinang reach,of Dongting Lake storage volume,of flood storage & diversion have influenced the flood situations in Jingjiang reach,Dongting Lake,and Chenglingji-Hankou reach.Combined with qualitative physical interpretation,the cause of abnormally high flood stages in 1998 and its interaction with flooding in the river lake coupled system are thoroughly discussed.In addition,the effects of restoring the farmland to natural state and of Three Gorge Reservoir in the flood in 1998 are presented.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
1999年第3期242-250,共9页
Advances in Water Science
基金
国家杰出青年科学基金
关键词
防洪
长江中游
高洪水位
成因
洪水反演
flood control
middle Yangtse River
cause of high flood level
flood reconstruction
