【摘要】 结合GIS和SWMM技术,利用城市大比例尺地形图、地下管网、高精度DEM、地表覆盖等数据,研究城市局部范围雨洪模型的构建方法。以南京某居住小区为实验区,阐述了基于DEM自动划分并依据建筑物进行人工修正实现子汇水区划分、管网模型概化以及利用GIS获取模型所需计算参数的方法。实验表明,所提方法的模拟积涝结果与实际调查情况基本一致,对城市局部区域防治暴雨积涝灾害具有参考作用。更多还原

【Abstract】 Based on GIS and SWMM technology,it studies on the method to build the storm model by using data such as large scale DLG,underground pipeline,high density DEM,land cover and so on.With one district of Nanjing city as the object of the research,it illustrates the approach of automatic catchment area division by DEM which adjusted by the building,of the underground pipeline abstract,of obtaining parameters by GIS.The experimental results show that the results of it are in agreement with the actual investigation,so the research result may have a significant function to prevent the storm water disaster of the urban district更多还原