武汉市城市积涝预警系统及其仿真模拟效果  

Study on the Early Warning System for Rainstorm Waterlogging in Wuhan City and its Simulated Results

作　　者：张萍萍[1] 王丽[1] 张宁[1] 

机构地区：[1]武汉中心气象台,武汉430074

出　　处：《暴雨灾害》2010年第1期71-75,88,共6页Torrential Rain and Disasters

基　　金：湖北省科技厅"城市防灾减灾应急气象服务系统开发研究"项目资助

摘　　要：在建立武汉市城市排水管网地理信息系统的基础上,以城市地表与明渠、河道的水流运动为主要模拟对象,以二维非恒定流基本方程和无结构不规则网格划分技术为骨架,设计了适合武汉市的城市积涝仿真模型,并结合精细化降水预报业务和积水显示后处理系统,建立了武汉市城市积涝预警系统。另外,利用该系统对2008年5月27—28日武汉市特大暴雨引发的积涝进行预报预警,取得较好效果,其中最大积水落区预报成功率达70%以上,模拟的积水深度误差主要分布在20cm以内。Based on the geography information system for drainage network, a simulation model for watedogging in Wuhan City was established on the basis of two-dimensional unsteady flow theory and the technique of nonstruetural and irregular meshes. The surface water flow, open channel water flow and river flow in the city are the main objects to be simulated. Combined with the fine rainfall forecast operation and post-processing system of watedogging display, an early warning and forecast system for rainstorm waterlogging was built. The system was tested in the rainstorm waterlogging process in Wuhan City in May 2008. The forecast accuracy of the max waterlogging area exceeds 70%, and the errors of the most waterlogging depth are within 20cm, which show that the simulated results mentioned above are better.

关 键 词：城市积涝 仿真模型 预警系统 武汉市 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]