SWMM模型河道及明满流模拟能力分析研究
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摘要
SWMM模型是当前国内外使用最为广泛的城市雨洪模型,对其模拟能力进行研究具有重要意义。在简要介绍SWMM模型的基础上,对模型处理城区河道和管道明满流等方面的能力进行了研究和分析。通过将SWMM模型模拟城区河道的结果与通用一维河网模型进行对比,对SWMM模型在处理和概化城区河道时存在的问题进行了分析,并论证了采用SWMM模型处理城区河道的可行性。采用具有复杂流态的经典环状排水管网算例对SWMM模型处理明满流的能力以及管道概化策略进行了研究和分析。研究结果表明:SWMM模型在保证合适的断面间距的情况下完全能够应用于城区河道水流计算,模拟结果与一般河网模型差别较小,同时SWMM模型具备模拟一维明满流的能力,在管道较长时,适当增加中间节点,可以在一度程度上改善模拟效果。
The SWMM model is the most widely used urban storm water management model in the world.It is of great significance to study the simulation capabilities of the SWMM model. Based on a brief introduction to the SWMM model,its simulation ability to deal with the rivers in the urban area and the free-surface-pressure flow was studied and analyzed. The problems existing in processing and generalizing urban rivers when using SWMM model were analyzed by comparing the results of the SWMM model with a common river network model,and the feasibility of using the SWMM model to deal with urban river channels was verified. The classical circular drainage network with complex flow patterns was used to study and analyze the SWMM model’s ability to deal with the full flow and the pipeline generalization strategy.It is proved that the SWMM model can be applied to the calculation of the water flow in urban river with proper section spacing,there is no significant differences from the results of the general river network model,and the results show that SWMM has the ability to simulate the free surface-pressurized flow. In the presence of very long pipes,to add intermediate nodes properly can improve the simulation results to a certain degree.
The SWMM model is the most widely used urban storm water management model in the world.It is of great significance to study the simulation capabilities of the SWMM model. Based on a brief introduction to the SWMM model,its simulation ability to deal with the rivers in the urban area and the free-surface-pressure flow was studied and analyzed. The problems existing in processing and generalizing urban rivers when using SWMM model were analyzed by comparing the results of the SWMM model with a common river network model,and the feasibility of using the SWMM model to deal with urban river channels was verified. The classical circular drainage network with complex flow patterns was used to study and analyze the SWMM model’s ability to deal with the full flow and the pipeline generalization strategy.It is proved that the SWMM model can be applied to the calculation of the water flow in urban river with proper section spacing,there is no significant differences from the results of the general river network model,and the results show that SWMM has the ability to simulate the free surface-pressurized flow. In the presence of very long pipes,to add intermediate nodes properly can improve the simulation results to a certain degree.
引文
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[3]喻海军.城市洪涝数值模拟技术研究[D].广州:华南理工大学,2015.
[4]胡莎,徐向阳,周宏,等.基于SWMM模型的山前平原城市水系排涝规划[J].水电能源科学,2016,34(10):106-109.
[5]马建明,喻海军,张大伟,等.洪水分析软件在洪水风险图编制中的应用[J].中国水利,2017(5):17-20.
[6]张灵敏.排水管网水力计算及暴雨积水模拟方法研究[D].广州:华南理工大学,2015.
[7]黄国如,李碧琦.深圳民治河流域低影响开发措施水文效应评估[J].水资源与水工程学报,2018,29(3):1-6.
[8]韩璐遥,叶兴成,王飞,等.基于不同排水片区的低影响开发措施优化方案选取[J].水资源与水工程学报,2018,29(1):160-165.
[9]朱呈浩,夏军强,陈倩,等.基于SWMM模型的城市洪涝过程模拟及风险评估[J].灾害学,2018,33(2):224-230.
[10]RAI P K,DHANYA C T,CHAHAR B R.Coupling of 1Dmodels(SWAT and SWMM)with 2D model(iRIC)for mapping inundation in Brahmani and Baitarani river delta[J].Natural Hazards,2018,92(3):1821-1840.
[11]喻海军,马建明,张大伟,等.IFMS Urban软件在城市洪水风险图编制中的应用[J].中国防汛抗旱,2018,28(7):13-17.
[12]LEANDRO J,MARTINS R.A methodology for linking 2Doverland flow models with the sewer network model SWMM 5.1 based on dynamic link libraries[J].Water Science and Technology,2016,73(12):3017-3026.
[13]RAI P K,CHAHAR B R,DHANYA C T.GIS-based SWMM model for simulating the catchment response to flood events[J].Hydrology Research,2017,48(2):384-394.
[14]黄子千,庞博,赵刚,等.SWMM在北京市乐家花园排水区的雨洪模拟研究[J].中国农村水利水电,2018(5):89-94.
[15]陈杨,俞国青.明满流过渡及跨临界流一维数值模拟[J].水利水电科技进展,2010,30(1):80-84+94.
[16]ZHONG Ji.General hydrodynamic model for sewer/channel network systems[J].Journal of Hydraulic Engineering,1998,124(3):307-315.
[17]冯良记,张明亮.城市排水管网明满过渡流模型的研究及应用[J].中国给水排水,2009,25(23):131-134+137.
[18]NOTO L,TUCCIARELLI T.DORA algorithm for network flow models with improved stability and convergence properties[J].Journal of Hydraulic Engineering,2001,127(5):380-391.