城市雨水管道排水能力评估中不同方法的对比分析  

Comparison of Different Methods Applied in Drainage Capacity Assessment of Municipal Storm Sewers

作　　者：杨涛 陈宝玉 王正雄 杜立刚 王旭峰 杨墨 YANG Tao;CHEN Bao-yu;WANG Zheng-xiong;DU Li-gang;WANG Xu-feng;YANG Mo(Wuhan Municipal Engineering Design and Research Institute Co.Ltd.,Wuhan 430023,China;Central and Southern China Municipal Engineering Design&Research Institute Co.Ltd.,Wuhan 430010,China)

机构地区：[1]武汉市政工程设计研究院有限责任公司,湖北武汉430023 [2]中国市政工程中南设计研究总院有限公司,湖北武汉430010

出　　处：《中国给水排水》2019年第23期134-138,共5页China Water & Wastewater

基　　金：国家“十二五”科技支撑计划项目(2014BAL04B04、2015BAL01B02)

摘　　要：以某排水区为例,利用ArcGIS对其下垫面进行快速解析和预处理,实现了复杂分布条件下下垫面和排水区的耦合。然后,根据InfoWorks ICM模拟结果中排水区的产流情况和管道汇流情况,对比分析了综合径流系数法、分项径流系数法和下垫面扣损法的差异。以管道排水能力能够承受的降雨事件对应的重现期为依据,利用以上3种方法分别评估了案例区雨水管道的排水能力,并结合下垫面扣损法评估结果阐述了其工程意义。ArcGIS was used to quickly analyze and preprocess the underlying surface(US)in a drainage area,and the coupling between the underlying surface and the drainage area under complex distribution conditions was realized.Then,the difference among the integrated runoff coefficient method(IRCM),clausal runoff coefficient method(CRCM)and underlying surface deduction method(DM)was compared and analyzed according to the runoff process and conduits’confluence process of the drainage area simulated by InfoWorks ICM.The tolerable recurrence interval(TRI)of the rainfall was used as the criterion to assess the drainage capacity of municipal storm sewers in this case,all the three methods above were adopted and its engineering significance was revealed based on the assessment results of DM.

关 键 词：城市雨水管道 排水能力评估 综合径流系数法 分项径流系数法 下垫面扣损法 水动力学模型 

分 类 号：TU992[建筑科学—市政工程]