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基于GIS的石家庄市暴雨内涝数学模型与应用

魏军魏铁鑫陈莎彭相瑜赵亮   

  1. 河北省气象灾害防御中心,河北石家庄050021
  • 出版日期:2018-09-04 发布日期:2018-09-04
  • 作者简介:魏军(1987—),男,江苏泗阳人,工程师,主要从事气象灾害研究. E-mail:weijun052700@126.com。
  • 基金资助:

    河北省气象局科研项目(17ky05)资助

Application of the Mathematical Model of Rainstorm Waterlogging in Shijiazhuang City Based on GIS

WEI Jun, WEI Tiexin, CHEN Sha, PENG Xiangyu, ZHAO Liang   

  1. Hebei Meteorological Disaster Prevention Center, Shijiazhuang 050021, China
  • Online:2018-09-04 Published:2018-09-04

摘要:

利用石家庄市高精度城市地理信息、排水工程设施、河道地形、气象降水等基础数据,基于天津城市内涝模型技术,构建了石家庄市暴雨内涝数学模型。同时在原有工作基础上,对模型网格概化方式和计算模式加以改进,将城市河网、路网、管网和社区的计算网格分层划分,形成分区、分层和立体多重的内涝计算模式。选取典型暴雨个例对模型的模拟效果进行验证,结果表明城区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0.2 m以内。此外,基于WEBGIS技术开发的石家庄城市内涝监测预警平台,进一步增强了模型的表现力。

关键词: 暴雨, 城市内涝, 数学模型, 石家庄市

Abstract:

Based on the technology of urban waterlogging model in Tianjin,  the mathematical model of rainstorm waterlogging in Shijiazhuang was constructed by using the basic data of high precision urban geographic information, drainage facilities, river topography, precipitation in Shijiazhuang. At the same time, on the basis of the original work, the generalization mode and computing mode of the model grid were improved, then the computational grids of urban river network, road network, pipe network and community were divided into layers. Finally, the zoning and multi-dimensional calculation mode of waterlogging was formed. A typical rainstorm example was used to verify the simulation results. The results show that the prediction success rate of urban maximum water accumulated area was more than 70%, and the error of simulated depth of water accumulation was mainly within 0.2 m. In addition, the Shijiazhuang urban waterlogging monitoring and warning platform based on WEBGIS technology has further enhanced the performance of the model.

Key words: rainstorm, urban waterlogging, mathematical model, Shijiazhuang city

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