文章摘要
周柏林,栾震宇,刘晓群,陈莫非,金秋.变化环境下七里山水域高洪水位研究[J].水利学报,2018,49(4):456-463
变化环境下七里山水域高洪水位研究
Study on high flood level of Qilishan Waters in changing environment
投稿时间:2017-04-14  
DOI:10.13243/j.cnki.slxb.20170349
中文关键词: 变化环境  洞庭湖区  洪水模拟  防洪蓄洪
英文关键词: changing environment  Dongting Lake  flooding simulation  flood control-storage
基金项目:公益性行业科研专项经费(201301080,201401046)
作者单位
周柏林 湖南省水利厅, 湖南 长沙 410007 
栾震宇 南京水利科学研究院, 江苏 南京 210029 
刘晓群 湖南省洞庭湖水利工程管理局, 湖南 长沙 410007 
陈莫非 武汉大学, 湖北 武汉 430000 
金秋 南京水利科学研究院, 江苏 南京 210029 
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中文摘要:
      七里山水域是洞庭湖汇入长江的江湖交汇区,受三峡工程及上游溪洛渡、向家坝水库运用清水下泄影响,江湖水沙输运、河道冲淤及河势演变、河段蓄泄关系、洪水位和泄流能力等出现诸多新变化,对长江中游特别是洞庭湖区的防洪蓄洪格局产生影响。在长江中下游水沙整体宏观数学模型的基础上建立了七里山水域二维水沙局部细致模拟数值模型,模拟研究了水库群运用后,在不同控制水位、不同蓄滞洪区启用条件下,针对各种典型洪水的防洪蓄洪问题。对于1998年型洪水,通过三峡等上游水库调节并抬高七里山控制水位0.5 m时,可不分蓄洪;对于1954年目标洪水,则需利用洞庭湖区24蓄洪垸和洪湖对等承担分蓄洪任务。
英文摘要:
      Qilishan Waters is the confluence of the Dongting Lake into the Yangtze River. Affected by clean water discharging from the Three Gorges Project and upstream Xiluodu Reservoir and Xiangjiaba Reservoir,there are many new changes occurred in this area,such as water flow and sediment transport,river sedimentation and variation of river regime,river flood storage-discharge relationship,flood level and discharge capacity and so on, which have an effect on the flood control and storage pattern in the middle reaches of the Yangtze River,especially in the Dongting Lake. Based on the water-sediment integrate macro mathematical model of the Yangtze River,a locally refined 2D flow-sediment numerical simulation model of Qilishan waters was developed, researching the flood control and storage problems for various typical floods after reservoir group operation under different control levels and different enabled flood detentions. For the type of 1998 flood,through the regulation of Three Gorges dam and raising up 0.5m of the Qilishan control water level,there may be no need to utilize the flood storage areas;however,for the type of 1954 flood,flood storage areas of Dongting Lake and Honghu Lake are still required to be used.
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