实测暴雨情景下子汇水区划分对溢流的影响研究  

Study on the influence of different sub-catchment zoning on the overflow simulation results under measured rainstorm scenario

作　　者：陈燕[1,2] 范津津 潘耀忠 张煜洲[4] 王锣洋 潘婧 王品 胡潭高 CHEN Yan;FAN Jinjin;PAN Yaozhong;ZHANG Yuzhou;WANG Luoyang;PAN Jing;WANG Pin;HU Tangao(Institute of Remote Sensing and Earth Sciences,Hangzhou Normal University,Hangzhou 311121;Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change,Hangzhou 311121;Institute of Remote Sensing Science and Engineering,Beijing Normal University,Beijing 100875;Zhejiang Institute of Water Conservancy and Hydropower,College of surveying and Mapping and Municipal Engineering,Hangzhou 310018)

机构地区：[1]杭州师范大学遥感与地球科学研究院,杭州311121 [2]浙江省城市湿地与区域变化研究重点实验室,杭州311121 [3]北京师范大学遥感科学与工程研究院,北京100875 [4]浙江水利水电学院测绘与市政工程学院,杭州310018

出　　处：《中国防汛抗旱》2022年第8期53-60,共8页China Flood & Drought Management

基　　金：国家重点研发计划项目资助(2018YFC1504603);国家高分辨率对地观测重大科技专项项目(05-Y30B01-9001-19/20-4);浙江省基础公益研究计划项目(LY19D010004);高层次留学回国人员(团队)在杭创业创新项目。

摘　　要：汇水区是城市雨洪模型建模过程中的重要输入参数,对于城市雨洪模型模拟精度具有重要影响。在多场次实测暴雨情景下,开展了排水管网为主、地形数据为主以及综合地形和管网数据3种汇水区划分方法对SWMM模型(Storm Water Management Model)溢流模拟结果的影响研究。研究结果表明,相较于其他的汇水区划分方法,综合地形和管网的汇水区划分方法得到的子汇水区结果最符合真实情景,其溢流模拟精度比以排水管网为主的汇水区划分方法平均提高了约6.29%,说明其更适合于城市雨洪模拟。Catchment area is an important input parameter in the process of urban storm water model modeling, which has an important impact on the simulation accuracy of urban stormwater model. Under multiple measured rainstorm scenarios, the study on the impact to the SWMM model overflow simulation results of three catchment zoningmethods including drainage pipe network-based, terrain data-based, and combining terrain and pipe network data, has been carried out. The results show that: compared with other catchment zoing methods, the sub-catchment results obtained by the combining terrain data and pipe network as catchment zoning method are most consistent with the real scenario. And its overflow simulation accuracy is about 6.29% higher than that of the drainage pipe network-based catchment zoning method, indicating that it is more suitable for urban storm flood simulation.

关 键 词：数字高程模型 汇水区划分 SWMM 暴雨内涝 溢流 

分 类 号：P333.2[天文地球—水文科学]