城市地表暴雨产流模型及应用  

Research and Application of Rainstorm Runoff Yield Model in Urban Surface

作　　者：邹霞[1] 宋星原[1] 张艳军[1] 袁迪[1] 刘佳明[1] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072

出　　处：《水电能源科学》2014年第3期10-14,共5页Water Resources and Power

基　　金：国家自然科学基金项目(51379149;51079099);国家青年基金项目(51209162)

摘　　要：为适应城市暴雨过程及地表特性,结合城市水文学及水力学原理,采用芝加哥雨型对暴雨进行时程分配,建立了不透水区、透水区及混合区的产流模型。对不透水区,在Linsley产流模型的基础上,结合径流系数对原模型做出了适当改进,建立了适合城市不透水区的产流模型;对透水区,将下渗能力分配曲线和蓄水容量分配曲线耦合,按照二者的产流原理,形成了扣除截留、下渗损失的产流模型;对混合区则结合不透水部分和透水部分的占地面积,通过叠加不透水部分的产流与对应时刻透水部分的雨强作为输入,建立了与之相适应的产流模型。并将所得的暴雨时程分配过程线作为输入,对武汉市汉口区的产流过程进行模拟,得到地表净雨过程线,通过对比,发现该模型能较好地反映城市地表的产流过程。To adapt the process of urban rainstorm and its surface characteristics, combined with urban hydrology and hydraulics principles, the temporal distribution analysis of rainstorm based on Keifer and Chu rainfall pattern is selected and the runoff model of impervious, pervious and the mixing zone is established. For impervious area, the Linsley model is improved by integrating with runoff coefficient to suit its feature, and for pervious area, the model is formed by remo ving the losses of interception and infiltration, while for mixing area, the suitable model is built on considering its own trait. And then the data of the rainstorm in Hankou District in Wuhan are used to simulate runoff yield process, and the surface net rainfall hydrograph is obtained. It finds out that the model can better reflect the process of urban surface runoff yield.

关 键 词：城市暴雨 芝加哥雨型 城市产流模型 暴雨过程线 净雨过程线 

分 类 号：TV121.2[水利工程—水文学及水资源]