摘要
城市化进程的加快导致城市内涝问题日渐严重,研究城市防洪排涝问题时,SWMM模型的应用越来越多。在SWMM模型的构建中,确定模型的空间尺度是一个重要环节,目前对于SWMM模型子汇水区的划分还没有明确。以郑州市为例,基于SWMM模型,构建了0.09、0.16、0.25、0.36、0.64、1.00 km^26种空间尺度的暴雨洪水模型,以不同重现期暴雨及实测暴雨为降水输入对洪水和积水点情况进行了模拟分析,确定了当子汇水区平均面积是0.25 km^2即子汇水区数量为2200个时的划分方式最符合郑州市实际情况。并以此为例进一步探讨SWMM模型应用于平原地区的空间尺度确定原则,给平原地区的城市暴雨洪水研究以强力的支撑。
With the accelerating process of urbanization,the urban water logging becomes more and more serious,and the SWMM model is more and more widely used for studying the flood control and water logging drainage in urban areas.In the construction of the SWMM model,it is important to determine the spatial scale of the model.At present,the division of the SWMM sub-catchment area is not yet clear.In this paper,based on the SWMM model,six types of storm flood models in spatial scale of 0.09,0.16,0.25,0.36,0.64 and 1 km^2 are constructed to simulate and analyze the flood and accumulated water points with the input rainfall of rainstorm and measured rainstorm under different recurrence periods,and it is shown that the division of sub-catchment with an average area of 0.25 km^2(that is,the number of sub-catchment of 2200)applies to the actual conditions of Zhengzhou City mostly.In addition,taking this as an example to further explore the principle for determining the spatial scale of SWMM model on the plain region,which can provide powerful technical support for research on urban storm flood.
作者
胡彩虹
杜纤
赵彦增
何俊霞
刘冠华
陈磊
HU Caihong;DU Xian;ZHAO Yanzeng;HE Junxia;LIU Guanhua;CHEN Lei(Zhengzhou University,Zhengzhou 450001,China;Zhengzhou Key Laboratory of Water Resource and Environment,Zhengzhou 450001,China;Henan Hydrology and Water Resources Bureau,Zhengzhou 450001,China)
出处
《人民珠江》
2019年第12期18-24,共7页
Pearl River
基金
国家自然科学重点基金(51739009)
贵州省科技支撑计划(黔科合[2016]支撑2903)
国家自然科学基金(31700370)
国家重点研发计划(2016YFC0402402)
