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-up areas of a plain city during torrential rain
谭清乾 1程发顺 1高阳 2蔡帅 1王洵2
作者信息
- 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
- 折叠
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50a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.
Abstract
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 Dong-guan City in Pearl River Delta as an example,a new long-duration designed storm was proposed based on historical rainstorm e-vents 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 sug-gested,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 ca-pacity of"major drainage systems"such as rivers and road drainage channels has a significant effect on improving the waterlog-ging 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Key words
waterlogging control/long-duration designed storm/major drainage system/hydraulic coupling model/highly built-up area/plain city引用本文复制引用
基金项目
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(HZHLAB2301)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据