基于GIS的城市暴雨洪涝模拟分析——以郑州市石佛镇“7·20”特大暴雨为例  

Simulation Analysis of Urban Storm Flood Based on GIS:Taking the“7·20”Torrential Rain in Shifo Town,Zhengzhou City as an Example

作　　者：钟源 孟庆祥[1] ZHONG Yuan;MENG Qing-xiang(School of Remote Sensing Information Engineering,Wuhan University,Wuhan 430079,Hubei Province,China)

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430072

出　　处：《中国农村水利水电》2022年第10期125-130,共6页China Rural Water and Hydropower

摘　　要：针对极端暴雨洪涝灾害缺乏全流程系统性研究的问题,提出了基于GIS的城市暴雨洪涝模拟分析方法,在划分子流域的基础上,以降雨—径流—淹没为序,对河南省郑州市“7·20”特大暴雨灾害进行了推演模拟,并对试验区内的建筑及交通进行了受灾评估。将模型计算结果与卫星影像数据对比,表明其与洪涝的实际范围、深度基本吻合,可见本文所提模型能够在数据精度不高或缺失的应急情况下,快速地推演与模拟郑州市石佛镇大范围洪水淹没情况,为城市极端雨洪灾害模拟提供参考,具有实际应用价值。Aiming at the problem of lack of systematic study on the whole process of extreme storm flood disasters,this paper puts forward a GIS-based urban storm flood simulation analysis method. Based on the division of sub-watersheds,the“7·20”torrential rain disaster in Zhengzhou City,Henan Province is simulated in the order of rainfall-runoff-inundation,and the disaster situation of buildings and traffic in the study area is evaluated. By comparing the calculation results of the model with satellite image data,it shows that it is basically consistent with the actual range and depth of the flood. It can be seen that the model proposed in this paper can quickly deduce and simulate the largescale flood inundation in Shifo Town,Zhengzhou City under the emergent situation of missing or low-accuracy data,so as to provide reference for the simulation of urban extreme storm flood disasters,and has practical application values.

关 键 词：GIS 城市暴雨洪涝模型 郑州市“7·20”特大暴雨 极端暴雨洪涝全流程推演 

分 类 号：TV11[水利工程—水文学及水资源] P426.616[天文地球—大气科学及气象学]