Urban Flood Simulation Using Synthetic Storm Drain Networks
Urban Flood Simulation Using Synthetic Storm Drain Networks
复制标题
DOI：
10.3390/w9120925
复制
发表时间：
2017-12-01
期刊：
影响因子：
3.4
通讯作者：
Kilsby, Chris
中科院分区：
文献类型：
--
作者：
Bertsch, Robert;Glenis, Vassilis;Kilsby, Chris
城市排水建模的最新发展允许一个更现实的耦合的二维（2D）表面和一维（1D）次表面排水域交换水通过雨水管入口，而不是一个子集水区的方法，基于沙井。然而，经验表明，雨水排放口位置的全面记录往往缺失或不完整，使用户无法充分利用这些建模能力。因此，本研究开发了一个GIS程序，以生成合成雨水管入口的位置为目的的城市洪水建模。使用CityCAT 1D/2D系统获得了综合生成和调查的雨水排放入口网络的水动力模型结果。在流域尺度上，模拟的流场（表面和入口捕获的流量）的合成雨水排放口网络显示出令人满意的结果时，模拟使用实际网络。结果还强调了流入量对雨水排放口位置相对较小变化的敏感性以及积水区雨水排放口的有效性。
Recent developments in urban drainage modelling allow for a more realistic coupling of the two-dimensional (2D) surface and one-dimensional (1D) sub-surface drainage domain exchanging water through storm drain inlets instead of a sub-catchment approach based on manholes. Experience has shown, however, that comprehensive records of storm drain inlet locations are often missing or incomplete, preventing users accessing the full benefit of these modelling capabilities. Therefore, this study developed a GIS routine to generate synthetic storm drain inlet locations for the purpose of urban flood modelling. Hydrodynamic model results for a synthetically generated and surveyed storm drain inlet network were obtained using the CityCAT 1D/2D system. On a catchment scale the flow field (surface and flow captured by inlets) simulated by the network of synthetic storm drainage inlets shows satisfactory results when compared with that simulated using the actual network. The results also highlight the sensitivity of the inflows to relatively small changes in terms of the location of storm drain inlets and the effectiveness of storm drain inlets in ponding areas.