江苏省里下河腹部地区河湖连通后的水动力提升效果模拟  

Simulation of hydrodynamic lifting effect after connecting riversand lakes in Lixia River area of Jiangsu Province

作　　者：李港 林妙丽 姚斯洋 LI Gang;LIN Miaoli;Yao Siyang(Institute of Eco Environment,Nanjing Hydraulic Research Institute,Nanjing 210029,China;School of Water Resources and Hydropower Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]南京水利科学研究院生态环境研究所,江苏南京210029 [2]武汉大学水利水电学院,湖北武汉430072

出　　处：《江苏水利》2022年第1期10-13,共4页Jiangsu Water Resources

基　　金：江苏省水利科技项目(2019004,2017001ZB)。

摘　　要：里下河湖泊湖荡的水动力状况优劣对于湖区水质及周边地区的供水安全具有重要意义。通过概化里下河湖泊河网水系,分析了退圩及河道挖深前后的地形变化,利用EFDC模型模拟了穿湖河道挖深前后的里下河湖泊湖荡及河网水动力情况。结果表明:穿湖河道挖深后里下河湖泊湖荡整体的水动力情况有了一定的改善,尤其是广洋湖、大凹子圩、射阳湖等中北部湖泊水动力提升效果显著,水动力弱区面积有了明显的减少。本研究结果可为里下河湖泊湖荡连通规划提供一定的参考。The hydrodynamic status of the lakes in the Lixia River area is of great significance to the water quality of the lake area and the water supply safety of the surrounding areas.By generalizing the lake and river networks of the Lixia River,the topographic changes before and after returning polder land to lake and deepening channel were analyzed,and the EFDC model was used to simulate the hydrodynamic conditions of the Lixia River and the lake and river networks before and after the deepening of the channel across the lake.The results show that:after the river crossing the lake was dug deep,the overall hydrodynamic condition of the lakes in Lixia River have been improved,especially in the mid-north lakes such as Guangyang Lake,Daaoziwei,Sheyang Lake,and the area of weak hydrodynamic area has been significantly reduced.The results can provide some references for the planning of the connection of the lakes in Lixia River area.

关 键 词：湖泊湖荡 EFDC 水动力 里下河 

分 类 号：TV851[水利工程—水利水电工程]