雄安新区起步区排水防涝规律研究  

Research on the drainage and waterlogging prevention in the starting area of Xiong’an New Area

作　　者：许婷婷 段梦 孙建升 叶雅丽 徐一剑[2] 莫罹[2] 赵晖 戴正晖 XU Tingting;DUAN Meng;SUN Jiansheng;YE Yali;XU Yijian;MO Li;ZHAO Hui;DAI Zhenghui(North China Municipal Engineering Design&Research Institute Co.,Ltd.,Tianjin 300110,China;China Academy of Urban Planning&Design,Beijing 100037,China;HR Wallingford Hydraulic Environment Technology ConsultingLtd.,Shanghai 200120,China)

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300110 [2]中国城市规划设计研究院,北京100037 [3]华霖富水利环境技术咨询(上海)有限公司,上海200120

出　　处：《给水排水》2021年第12期54-59,共6页Water & Wastewater Engineering

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07110-008)。

摘　　要：选择雄安新区起步区排水防涝系统作为研究对象,采用Infoworks ICM模型软件构建区域洪涝模型,分析排水防涝系统规律。模型结果表明,100年一遇长历时(24 h)2种设计雨型下东部细化区域最大积水深度均不超过0.15 m,符合区域内涝防治标准。典型节点水位与雨峰、区域汇流特征呈现相关性,河岸漫流流量反映地表排水能力。受河道宽度、糙率影响河道水位分布呈现不均匀性,设置合理宽度的水系通道有助于河网水位的均匀分布。调整排涝泵站空间布局及启闭水位对模型结果影响不大,充分预降河道水位、调整泵站规模对模型结果影响较大,建议维持规划方案,汛期来临前对河道水位充分预降,以最大化利用规划泵站的排水能力。设置不同重现期及不同边界水位情景试验,探究一、二级排水标准衔接规律。不同情景下雨水管渠结合竖向设计均可以与100年一遇排水防涝标准相衔接。顶托出流情景下5年一遇雨水管渠上游节点水位提升,因而与自由出流情景相比雨水管渠排涝能力相当。The drainage and waterlogging prevention system in the start-up area of Xiong’an New Area is selected as the research object, and the regional flood model is constructed by using Infoworks ICM to analyze the drainage law. The results show that the maximum depth of ponding is less than 0.15 m in the eastern refined area under the long-term(24 h) rainfall with 100 year return period, which meets the regional waterlogging control standard. The typical node water level is correlated with rainfall peak and regional confluence characteristics, and the river bank overflow flow can reflect the surface drainage capacity. Due to the influence of channel width and roughness, the distribution of river water level is non-uniform, and properly widening the main drainage channel can reduce the river water level in relevant areas. It is suggested that the planning scheme should be maintained and the river water level should be fully pre lowered before the flood season to maximize the drainage capacity of the planning pumping station. Set scenario experiments with different return periods and different boundary water levels to explore the connection law of primary and secondary drainage standards. The combined vertical design of rainwater pipes and canals in different scenarios can be connected with the drainage and waterlogging prevention standard of 100 year return period. Under the jacking outflow scenario, the water level at the upstream node of the rainwater pipe channel rises every 5 years, so the drainage capacity of the rainwater pipe channel is equivalent to that under the free outflow scenario.

关 键 词：Infoworks ICM 排水防涝 设计雨型 水系布局 泵站调度 雨水管渠设计重现期 

分 类 号：TU992[建筑科学—市政工程]