【作者】 廖小红； 贺方舟； 黎昔春；

【Author】 LIAO Xiaohong;HE Fangzhou;LI Xichun;Hunan Hydro & Power Design Institute;Changjiang River Scientific Research Institute,Key Laboratory of River Regulation and Flood Control of MWR;

【机构】 湖南省水利水电勘测设计研究总院； 长江科学院水利部江湖治理与防洪重点实验室；

【摘要】 洞庭湖南连四水、北接四口,其巨大的槽蓄作用和槽蓄特性直接影响了洞庭湖及长江中下游的防洪总体布局和水资源配置方案。本文采用1995年实测洞庭湖区天然高程-容积关系成果,对洞庭湖区出现大洪水的1991年、1995年、1996年、1998年洪水过程的槽蓄特性进行了分析研究,认为水深增量相同而流量不同时湖泊槽蓄量增量存在差异,故在进行防洪规划时应合理规划防洪水位,最大限度运用洞庭湖调蓄功能;分析比较了地形法和水量平衡法应用于洞庭湖区槽蓄量计算的差异及产生差异的原因。研究成果对长江中下游及洞庭湖区防洪总体布局和水资源配置方案的科学制定具有重要的指导和借鉴意义。更多还原

【Abstract】 The Dongting Lake connected four rivers in Hunan Province and the four outlets of Jingjiang River.Its huge channel storage capacity and unique channel storage characteristic directly affected on the overall layout of flood control of the Dongting Lake and the middle and lower reaches of the Changjiang River.Using the elevation-capacity curve of the Dongting Lake,we analyzed the channel storage characteristic of the Dongting Lake based on the lake’s hydrological data in 1991,1995,1996,1998 which appears heavy flood in these years.It is considered that the increment of channel storage capacity exist differences when the water depth increment is the same and the discharge is different.Therefore,the flood control level should be rationally planned to make the flood regulation function of the Dongting Lake most efficiently.The article also compared the differences of channel storage capacity of the Dongting Lake using the two different method:geomorphologic method and water balance method and discussed the reasons which lead to these differences.The research results have important guidance and reference significance for the overall layout of the flood control and water resources allocation scheme in the middle and lower reaches of the Changjiang River and the Dongting Lake.更多还原