| 基于WCA2D与SWMM模型的城市暴雨洪涝快速模拟 |
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| 引用本文： | 曾照洋,赖成光,王兆礼,吴旭树,黄国如,胡庆芳.基于WCA2D与SWMM模型的城市暴雨洪涝快速模拟[J].水科学进展,2020,31(1):29-38. |
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| 作者姓名： | 曾照洋 赖成光 王兆礼 吴旭树 黄国如 胡庆芳 |
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| 作者单位： | 华南理工大学土木与交通学院,广东广州510640;华南理工大学土木与交通学院,广东广州510640;广东省水利工程安全与绿色水利工程技术研究中心,广东广州510640;南京水利科学研究院,江苏南京210029 |
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| 基金项目： | 国家重点研发计划资助项目（2018YFC1508205）；国家自然科学基金资助项目（51709117） |
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| 摘 要： | 为探讨计算高效的元胞自动机模型(WCA2D)与传统一维管网模型耦合的机制以及计算效果,尝试将WCA2D与SWMM模型耦合(SWMM/WCA2D),以广州市长湴片区为例探究一种暴雨洪涝快速二维模拟技术,对比实测积水数据以及SWMM/LISFLOOD-FP模拟,结果表明:SWMM/WCA2D模拟结果与"20180607"实测积水数据相近,表明模型精度良好;根据多指标评估结果,综合考虑主干渠道淤积以及建筑物阻挡情景的RTPR、RPPV、F1值分别达到0.8、0.6、0.7,模拟精度最高,最能反映区域实际情况;通过与SWMM耦合,WCA2D和LISFLOOD-FP的模拟结果差异小(最大水深差值基本低于0.1 m)、相关性强(相关系数基本超过0.7),但前者计算效率是后者的3~5倍,表明WCA2D能够耦合SWMM且计算效率更高,为复杂城市化地区暴雨洪涝快速模拟提供了一种新方法。
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| 关 键 词： | 城市暴雨洪涝 元胞自动机模型 二维模拟 模型对比 广州 |
| 收稿时间： | 2019-04-03 |
Rapid simulation of urban rainstorm flood based on WCA2D and SWMM model |
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| ZENG Zhaoyang,LAI Chengguang,WANG Zhaoli,WU Xushu,HUANG Guoru,HU Qingfang.Rapid simulation of urban rainstorm flood based on WCA2D and SWMM model[J].Advances in Water Science,2020,31(1):29-38. |
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| Authors: | ZENG Zhaoyang LAI Chengguang WANG Zhaoli WU Xushu HUANG Guoru HU Qingfang |
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| Affiliation: | 1.School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China2.Guangdong Engineering Technology Research Center of Safety and Greenization for Water Conservancy Project, Guangzhou 510640, China3.Nanjing Hydraulic Research Institute, Nanjing 210029, China |
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| Abstract: | This study attempts to combine the cellular automata inundation model (WCA2D) with SWMM (SWMM/WCA2D) to explore the mechanism and computational efficiency of WCA2D coupling the traditional one-dimensional pipeline network model. For this purpose,we developed a rapid flooding simulation technology with the Changban catchment (a typical catchment features complicated in Guangzhou) as a study case. By comparing with the measured inundation data and the simulation results performed by SWMM/LISFLOOD-FP model,we could obtain the following results:the simulation results are close to measured inundation data related to the "20180607" rainstorm,suggesting that the coupled model presents good precision. According to the results of model precision indices,the scenario considering the blockage of main pipe and buildings shows the highest simulation precision with the RTPR,RPPV and F1 of approximately 0.8,0.6 and 0.7,respectively,which best characterizes the actual conditions of the study area. By coupling with SWMM,the simulation results of WCA2D and LISFLOOD-FP shows little difference (the maximum depth difference lower than 0.1 m) and higher correlation (the correlation coefficients almost larger than 0.7),however,the computational efficiency of WCA2D is 3-5 times higher than that of LISFLOOD-FP,indicating that the WCA2D could be feasibly and effectively combined by SWMM. Therefore,the coupled model (SWMM/WCA2D) proposed by this study could provide a novel way to implement rapid urban flooding simulation in the complicated urbanized areas. |
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| Keywords: | urban rainstorm flood cellular automata model 2-D simulation model comparison Guangzhou |
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