雨水管网淤积对城市内涝的影响特征分析  

Analysis on the Influence of Siltation of Rainwater Pipe Network on Urban Waterlogging

作　　者：贺蔚 冯思源 张健[1] 康昀 李卫 HE Wei;FENG Siyuan;ZHANG Jian;KANG Yun;LI Wei(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Jiangsu Capital Eco-Environment Co.,Ltd.,Suqian 223800,China)

机构地区：[1]河海大学水利水电学院,南京210098 [2]江苏省首创生态环境有限公司,宿迁223800

出　　处：《给水排水》2025年第2期151-157,共7页Water & Wastewater Engineering

基　　金：国家重点实验室开放课题(HESS-2019);江苏省水利科技项目(2022089)。

摘　　要：为探究管道淤积对城市内涝的影响,以宿迁市中心城区西南片区为例,基于MIKE URBAN构建产汇流-二维地表-一维管网耦合模型,分析了3种暴雨重现期时,不同管道淤积厚度对城市内涝的影响。结果表明:①当管道淤积从S_(0%)增至S_(50%),管道排水能力逐渐削减;降雨重现期越小,管道淤积带来的内涝积水总量增长越多。降雨重现期2、5和20年时的积水总量分别增加109.6%,89.5%和72.7%;②内涝高风险区淹没面积比内涝低风险区受淤积的影响更大;③相同降雨重现期下,管道淤积厚度越大,内涝积水产生时间越早,达峰时间越晚;④内涝高风险区宜增加管道清淤频次,淤积厚度达S_(30%)即可进行清淤;下垫面不透水率高、汇水区面积大、区域地势平坦的管段对淤积厚度的变化更敏感。In order to explore the influence of pipeline deposition on urban waterlogging,this paper takes Suqian city center as an example,based on MIKE URBAN,the coupling model of production confluence-two-dimensional surface-one-dimensional pipe network was constructed to analyze the influence of different pipeline deposition thickens on urban waterlogging during three kinds of rainstorm recurrence periods.The results show that:①When the pipeline deposition increases from S_(0%)to S_(50%),the drainage capacity of the pipeline decreases gradually,and the overflow time increases gradually.The smaller the recurrence period was,the more the total waterlogging water increased,and the total waterlogging water increased by 109.6%,89.5%and 72.7%in 2,5 and 20 a,respectively.②Compared with the low risk area of waterlogging,the submerged area of the high risk area of waterlogging was more affected by siltation;③Under the same recurrence period,the larger the pipe deposition thickness,the earlier the waterlogging water generation time,the later the peak time;④In areas with high risk of waterlogging,the frequency of pipeline desilting should be increased,and the desilting can be carried out if the sediment thickness is up to S_(30%).⑤Pipe sections with high underlying surface impermeability,large catchment area and flat regional terrain are more sensitive to the change of silting thickness.The research results can provide theoretical basis and decision-making suggestions for urban stormwater pipe network desilting and waterlogging control.

关 键 词：淤积 雨水管道 城市内涝 数值模拟 MIKEFLOOD 宿迁市 

分 类 号：TU992[建筑科学—市政工程]