北京建筑工程学院学报
北京建築工程學院學報
북경건축공정학원학보
JOURNAL OF BEIJING INSTITUTE OF CIVIL ENGINEERING AND ARCHITECTURE
2012年
1期
45-48
,共4页
SWMM模型%摩尔斯筛选法%敏感性分析
SWMM模型%摩爾斯篩選法%敏感性分析
SWMM모형%마이사사선법%민감성분석
SWMM%Morris screening method%sensitivity analysis
结合北京地区的实际案例,根据实测降雨数据,运用摩尔斯筛选法对城市暴雨管理模型SWMM中的水文参数进行敏感性分析,为参数率定提供参考.分析结果表明,对径流峰值流量最敏感参数为汇水区面积,而对径流系数最敏感参数为不透水率;不同降雨强度时,与下渗有关参数的敏感性也是不同的.
結閤北京地區的實際案例,根據實測降雨數據,運用摩爾斯篩選法對城市暴雨管理模型SWMM中的水文參數進行敏感性分析,為參數率定提供參攷.分析結果錶明,對徑流峰值流量最敏感參數為彙水區麵積,而對徑流繫數最敏感參數為不透水率;不同降雨彊度時,與下滲有關參數的敏感性也是不同的.
결합북경지구적실제안례,근거실측강우수거,운용마이사사선법대성시폭우관리모형SWMM중적수문삼수진행민감성분석,위삼수솔정제공삼고.분석결과표명,대경류봉치류량최민감삼수위회수구면적,이대경류계수최민감삼수위불투수솔;불동강우강도시,여하삼유관삼수적민감성야시불동적.
Sensitivity analysis was conducted using Morris screening method for the Stormwater Management Model（SWMM） based on the measured rainfall data.Sensitivity analysis is a basic procedure for parameter calibration.The results indicated that the most sensitive parameter for the runoff peak flow was the area of sub-catchment,and the most sensitive parameter for runoff coefficient was the percentage of imperviousness.The sensitivity indices ranking of the infiltration rate of SWMM model relates greatly to the rainfall intensity.
