基于InfoWorks ICM的济南市少年路暴雨内涝模拟研究
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摘要
运用InfoWorks ICM模型对济南市少年路区域进行洪涝过程的精细化模拟,探寻城市内涝形成规律.选用2013年7次典型内涝积水过程的区域水位站实测数据对模型进行率定验证,并研究了不同重现期和雨型的设计降水对区域积水的影响.结果表明:模型具有良好的精度和可靠性,率定期积水深度的最大实际偏差、相对偏差和时间偏差分别为-0.04m、15.79%和-20min;检验期积水深度的最大实际偏差、相对偏差和时间偏差分别为-0.06m、16.67%和27min.通过4个重现期和3种雨型的设计降水模拟发现,暴雨重现期的增加会导致积水面积和最大积水深度随之增加;而雨峰位置滞后会导致积水面积偏大,但对最大积水深度影响较小.
The intersection at Shaonian and Tongyuan Roads in Shaoniangong district of Jinan is an area prone to rainstorm waterlogging.InfoWork ICM was applied for simulation of rainstorm waterlogging this area.Flooding in seven rainstorms in 2013 was used for model calibration and validation.The impact of different rainfall return periods and rainfall patterns was assessed.The model presented satisfactory accuracy and reliability.Maximum errors,relative errors and time errors for flooding depth were found to be-0.04 m,15.79%and-20 min in calibration,and-0.06 m,16.67% and 27 min in verification respectively.For 4 return periods with 3 peak timing ratios,flooding depths and extents increased with higher frequency rainstorms.Greater peak timing ratios led to raised number of nodes,larger node maximum outflow and flooding extent,but did not affect maximum flooding depth.
The intersection at Shaonian and Tongyuan Roads in Shaoniangong district of Jinan is an area prone to rainstorm waterlogging.InfoWork ICM was applied for simulation of rainstorm waterlogging this area.Flooding in seven rainstorms in 2013 was used for model calibration and validation.The impact of different rainfall return periods and rainfall patterns was assessed.The model presented satisfactory accuracy and reliability.Maximum errors,relative errors and time errors for flooding depth were found to be-0.04 m,15.79%and-20 min in calibration,and-0.06 m,16.67% and 27 min in verification respectively.For 4 return periods with 3 peak timing ratios,flooding depths and extents increased with higher frequency rainstorms.Greater peak timing ratios led to raised number of nodes,larger node maximum outflow and flooding extent,but did not affect maximum flooding depth.
引文
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[3]宋晓猛,张建云,王国庆,等.变化环境下城市水文学的发展与挑战:Ⅱ.城市雨洪模拟与管理[J].水科学进展,2014,25(5):752
[4]程涛,徐宗学,宋苏林.济南市海绵城市建设兴隆示范区降雨径流模拟[J].水力发电学报,2017,36(6):1
[5]胡伟贤.山前平原型城市雨洪模型构建及应用研究[D].广州:华南理工大学,2010
[6]何文华.城市化对济南市暴雨洪水的影响及其洪水模拟研究[D].广州:华南理工大学,2010
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[8]边易达.基于HEC-HMS和SWMM的城市雨洪模拟[D].济南:山东大学,2014
[9]KEIFER C J,CHU H H.synthetic storm pattern for drainage design[J].Journal of the Hydraulics Division,1957,83:1
[10]黄国如.城市雨洪模型及应用[M].北京:中国水利水电出版社,2013
[11]岑国平,沈晋,范荣生.城市设计暴雨雨型研究[J].水科学进展,1998,9(1):41
[12]WU X,WANG Z,GUO S,et al.Scenario-based projections of future urban inundation within a coupled hydrodynamic model framework:a case study in Dongguan City,China[J].Journal of Hydrology,2017,547:428
[13]黄国如,王欣,黄维.基于InfoWorks ICM模型的城市暴雨内涝模拟[J].水电能源科学,2017(2):66
[14]CHOKSHI M.The tale of two solutions:1Dvs.2Dsolution for combined sewer system modeling[J].Proceedings of the Water Environment Federation,2013,2013(1):738
[15]INNOVYZE.InfoWorks ICM Help v3.0[Z].Seattle:Wallingford,2012
[16]ROSSMAN L A.Storm water management model user’s manual(Version 5.1)[M].Washington DC:USEPA,2015
[17]中华人民共和国住房和城乡建设部.GB 50014-2006室外排水设计规范(2014年版)[S].北京:中国计划出版社,2014