基于 SWMM 模型的上海某城市道路排水能力分析

Analysis on Drainage Capacity of an Urban Road in Shanghai Based on SWMM Model

摘要:

以上海某城市道路为例，结合下垫面条件， 利用SWMM模型对拟建管网进行排水能力复核和排洪能力检验。通过GIS进行模型简化， 在SWMM中建立排水管网概化模型。在3 a一遇暴雨重现期条件下， 对研究区域排水系统进行模拟， 分析排水管网的承载能力， 复核该套管网是否达到设计标准； 同时，在防洪设计暴雨重现期下(10 a， 50 a， 100 a)，模拟分析管网的排洪能力， 明确研究区域中易产生积水的地段。

Abstract:

Taking an urban road in Shanghai as an example and combining the underlying surface conditions, the SWMM model is used to recheck the drainage capacity and the flood discharge capacity of the proposed pipeline network. The model is simplified by GIS. A generalized model of drainage pipeline network is established in SWMM. Under the condition of 3-year recurrence period of rainstorm, the drainage system in the studied area is simulated to analyze the bearing capacity of drainage pipeline network and recheck whether this pipeline network reaches the design standards. At the same time, under the rainstorm recurrence period of flood control design (10 a, 50 a and 100 a), the flood discharge capacity of the pipeline network is simulated and analyzed. The areas prone to water accumulation in the study area are identified.