降雨雨型对城市内涝的影响  

Effects of rainfall patterns on urban waterlogging

作　　者：胡彩虹[1] 姚依晨 刘成帅 马炳焱 孙悦[1] HU Caihong;YAO Yichen;LIU Chengshuai;MA Bingyan;SUN Yue(School of Hydraulic Science and Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学水利科学与工程学院,河南郑州450001

出　　处：《水资源保护》2022年第6期15-21,87,共8页Water Resources Protection

基　　金：国家自然科学基金(51739009)。

摘　　要：为探究降雨雨型对城市内涝特征的影响,基于MIKE FLOOD平台,以郑州市金水区南部为研究区域,对不同重现期及3种单双峰雨型的设计降雨进行内涝过程场景推演,并对淹没量、淹没范围及淹没深度等量值进行对比分析。结果表明:在相同降雨历时及重现期下,相比于单峰型降雨,双峰型降雨具有更高的内涝风险等级;针对单峰型降雨,当重现期低于20 a时,降雨雨峰越靠前产生的淹没情况越严重,当重现期高于20 a时,降雨雨峰越靠后产生的淹没情况越严重;随着重现期的增加,单峰型和双峰型降雨所导致的内涝风险之间的差异在不断减小。To analyze the effects of the rainfall pattern on characteristics of urban waterlogging,using the southern Jinshui District of Zhengzhou City as the research area,the waterlogging processes of design rainfall scenes with different return periods and unimodal or bimodal rainfall patterns were investigated based on the MIKE FLOOD platform,and the flooding volume,flooding area,and flooding depth were compared and analyzed.The results show that compared with the unimodal rainfall,the bimodal rainfall leads to a higher risk of waterlogging.For the unimodal rainfall,when the return period is less than 20 a,the inundation caused by the earlier rain peak is more serious;when the return period is higher than 20 a,the inundation caused by the later rain peak is more serious.With the increase of the return period,the difference between the risks of waterlogging caused by unimodal and bimodal rainfall is decreasing.

关 键 词：城市内涝 MIKE模型 单峰雨型 双峰雨型 雨峰系数 场景推演 郑州市 

分 类 号：TV125[水利工程—水文学及水资源]