【作者】 董志勇； 陆佳荣；

【Author】 Dong Zhiyong~1 Lu Jiahrong~2 (1.Hydraulic and Municipal Engineering Research Institute at Zhejiang University of Technology,Hangzhou 310014,China, 2.Jiaxing Water Resources Bureau,Jiaxing 314001,China)

【机构】 浙江工业大学水利科学与市政工程研究所； 嘉兴市水利局；

【摘要】 本文将复杂的城市土地利用类型概化为不透水地面和透水地面,较系统地分析了城市不透水地面和透水地面的径流特性及其数学模型。基于圣维南方程,把降雨看作侧向入流提出不透水地面径流的数学模型;将街道边沟径流看作具有三角形断面的浅水流动,建立相应的数学模型;对于透水地面上的径流,较详细地分析了土壤的入渗能力,并给出 Richard 入渗公式、 Horton 入渗公式及 Philip 入渗公式。更多还原

【Abstract】 The complicated urban land-use types were summarized as the pervious and impervious areas in this paper.Overland flow characteristics and their mathematical models on urban pervious and imper- vious areas were systematically analyzed.Based on St.Venant equations,mathematical models of im- pervious overland flow were developed considering rainfall as lateral inflow.The gutter flow in the street was considered as shallow water flow with triangular cross-section and the corresponding mathe- matical models were proposed.For the pervious overland flow,infiltration capacity of soil was analyzed in detail,and Richard’s infiltration equation,Horton’s infiltration equation and Philip’s infiltration equation were given,respectively.更多还原