基于湖心水库的洞庭湖治理新理念  

A new lake treatment strategy for Dongting Lake based on central lake reservoir concept

作　　者：刘虎英[1,2] 蒋昌波 杨树清[3] 刘易庄 陈杰 隆院男[1,3] 邓斌[1,3] LIU Huying;JIANG Changbo;YANG Shuqing;LIU Yizhuang;CHEN Jie;LONG Yuannan;DENG Bin(School of Hydraulic Engineering,Changsha University of Science&Technology,Changsha 410114,China;Hunan Provincial Communications Planning,Survey&Design Institute Co.,Ltd.,Changsha 410008,China;Hunan Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration,Changsha 410114,China)

机构地区：[1]长沙理工大学水利工程学院,湖南长沙410114 [2]湖南省交通规划勘察设计院有限公司,湖南长沙410008 [3]洞庭湖水环境治理与生态修复湖南省重点实验室,湖南长沙410114

出　　处：《水利水电科技进展》2018年第6期19-25,31,共8页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金重大研究计划培育项目(91647118);湖南省自然科学基金(2018JJ3535);长沙市科技计划项目(KP1701170)

摘　　要：基于"湖心水库"的基本思想,提出"变湖为库、清污分流、蓄洪排污、流水不腐"的洞庭湖全新治湖理念。利用二维水动力模型,分析了西洞庭湖湖心水库建设对行洪、补水、水环境的影响,探讨其运用的可行性。结果表明:湖心水库的分洪蓄水能有效降低西洞庭湖内洪峰水位,缓解湖区的防洪压力;湖心水库的补水在枯水期能有效抬升开湖航道水位,改善通航条件;同时湖心水库的补水增大了开湖航道及湘江尾闾航道内水流流速,加速了水体交换,对洞庭湖水环境有利。A new lake treatment concept is proposed for Dongting Lake based on the idea of central lake reservoir,which includes transforming lakes into reservoirs,waste water cleaning and diverting,flood storage and sewage discharge,and running water never becoming putrid.The impacts of the central lake reservoir construction in the West Dongting Lake on flood,water replenishment and water environment are numerically investigated by a two-dimensional hydrodynamic model,and the feasibility of its application is also discussed.The results show that the flood storage capacity of the central lake reservoir can greatly reduce the peak flood elevation in West Dongting Lake,reducing its flood control pressure.Water replenishment from the central lake reservoir in the dry season can also efficiently increase the water level in Kaihu channel to improve the navigation condition.Meanwhile,water replenishment from the central lake reservoir can greatly increase the flow velocity in Kaihu channel and Xiangjiang River downstream channel,resulting in enhanced water exchange and better water environment.

关 键 词：洞庭湖 湖心水库 综合治理 二维水动力模型 

分 类 号：TV147[水利工程—水力学及河流动力学] TV212