摘要
为研究暴雨洪水模型中参数对模拟结果的影响,提高模型参数率定取值的效率,以天津市某小区为研究区域,利用正交试验设计法分析了研究区内6个水文参数的全局敏感性及变化趋势。结果表明:对研究地区流域中径流系数的敏感参数主要是Horton最大下渗率和透水区洼地蓄水深度,二者具有高度显著影响;对研究地区流域中峰值流量的敏感参数主要是不透水区曼宁系数,透水区曼宁系数和透水区洼地蓄水深度,三者都具有高度显著影响。正交试验设计法能定量描述参数影响的显著性水平。
In order to study the influence of parameters on the simulation results in the storm flood model and to improve the efficiency of model parameter rate determination,the global sensitivity and change trend of six hydrological parameters in the study area were analyzed by using orthogonal experimental design method with a certain district in Tianjin as the study area.The results show that the sensitivity parameters of the runoff coefficient in the study area are Horton's maximum infiltration rate and Horton's minimum infiltration rate,which have highly significant effects;the sensitivity parameters of the peak runoff in the study area are Manning's coefficient of impervious area,Manning's coefficient of permeable area,and the depth of storage of permeable area puddle,which all have highly significant effects.The orthogonal experimental design method quantitatively describes the significance level of parameter effects.
作者
余廷钧
孙颖娜
刘岩
刘辉红
Yu Tingjun;Sun Yingna;Liu Yan;Liu Huihong(College of Water Resources and Electric Power,Heilongjiang University,Harbin 150080 China;Heilongjiang Provincial Water Conservancy Scientific Research Institute,Harbin 150080,China)
出处
《黑龙江水利科技》
2024年第9期5-7,17,共4页
Heilongjiang Hydraulic Science and Technology
