城市雨水管理模型中关键问题探讨(二)——下渗模型

Discussion on key issues in urban rainwater management model(Ⅱ):infiltration model

城市雨水管理模型目前在我国应用越来越广泛,但对于该模型中的计算理论并未见系统的研究及分析。系统介绍该模型中下渗模型的计算方法,讨论了主要参数的取值,提出了相关的建议。针对SWMM模型中Horton方法计算过程存在的错误,提出了改进方法,通过分析Horton方法中各个参数取值影响,提出了建议取值的范围。

The urban Storm Water Management Model （SWMM） is more and more widely used in China, but the calculation theory in this model has not been systematically studied and analyzed. This paper introduced the calculation method of the infiltration model in SWMM, discussed the val- ue of the main parameters, and put forward relevant suggestions. An improved method was pro- posed towards the calculation error by the Horton method in SWMM. By analyzing the influence of the parameters＇ values in the Horton method, recommended range of values was proposed.