平原城市高度建成区暴雨内涝模拟及防治研究  

Simulation and prevention of urban waterlogging in highly built-upareas of a plain city during torrential rain

作　　者：谭清乾 程发顺 高阳 蔡帅 王洵[2] TAN Qingqian;CHENG Fashun;GAO Yang;CAI Shuai;WANG Xun(Power China Zhongnan Engineering Corporation Limited,Changsha 410014,China;College of Environment,Hohai University,Nanjing 210000,China)

机构地区：[1]中国电建集团中南勘测设计研究院有限公司,湖南长沙410014 [2]河海大学环境学院,江苏南京210000

出　　处：《人民长江》2024年第2期18-25,共8页Yangtze River

基　　金：中央高校基本科研业务费项目(B200204033);江苏省环洪泽湖生态农业生物技术重点实验室开放课题项目(HZHLAB2301)。

摘　　要：针对平原城市高度建成区暴雨引发的城市内涝问题,以珠三角城市东莞市为例,基于MIKE FLOOD平台,利用MIKE URBAN、 MIKE 11和MIKE 21构建了城市内涝耦合模型。同时,结合历史暴雨事件提出一种长历时暴雨设计雨型,分析50 a一遇设计降雨重现期下东莞市中心城区暴雨内涝过程和积水特征,提出改善“大排水系统”排水能力的内涝治理措施并评估其实施效果。结果表明:东莞市中心城区内涝的主要原因为河道水流顶托及道路排水不畅,河道拓宽整治结合道路竖向调整可使管网溢流程度降低45%,内涝淹没面积减小73%。提高研究区内河、道路排水通道等“大排水系统”的排水能力对改善研究区域的内涝现状效果显著。研究成果可为平原城市高度建成区的内涝治理提供技术支撑。For urban waterlogging caused by torrential rain in highly built-up areas of plain cities,a coupling model of urban waterlogging was constructed by using MIKE URBAN,MIKE 11 and MIKE 21 based on the MIKE FLOOD platform.Taking Dongguan City in Pearl River Delta as an example,a new long-duration designed storm was proposed based on historical rainstorm events to analyze the process of urban waterlogging and characteristics of flood inundation in the central urban area of Dongguan City under 50-year designed storm scenarios.Measures to improve the drainage capacity of"major drainage system"were suggested,and its effectiveness was evaluated.The results showed that the main causes of urban waterlogging in the central urban area of Dongguan City were river water jacking and poor road drainage.Combining river channel widening and road vertical adjustment could reduce the overflow volume of the pipe network by 45%and decrease waterlogging area by 73%.Improving the drainage capacity of"major drainage systems"such as rivers and road drainage channels has a significant effect on improving the waterlogging situation.The research results can provide technical support for the management of waterlogging in highly built-up areas of plain cities.

关 键 词：内涝防治 长历时设计暴雨 大排水系统 内涝耦合模型 高度建成区 平原城市 

分 类 号：TU992[建筑科学—市政工程]