冻融土壤Philip入渗模型参数的非线性传输函数模型研究
发布时间：2018-12-30 16:10
【摘要】：为满足季节性冻土地区越冬期间储水灌溉管理的需求,基于山西省汾河灌区季节性冻土的冬季大田土壤水分入渗试验,得到了120组Philip入渗模型参数实测样本,借助MATLAB软件,建立了以土壤温度、有机质质量分数、土壤含水率、土壤体积质量、物理性黏粒量为输入因子、以Philip入渗模型参数吸渗率和稳渗率为输出因子的多元非线性传输函数模型,并用实测资料对该模型进行了精度检验。结果表明,预测参数的相对误差均小于11%,预报精度在可接受范围之内。
[Abstract]:In order to meet the requirement of water storage irrigation management in seasonal permafrost region during winter, based on the soil moisture infiltration test of seasonal frozen soil in winter in Fenhe Irrigation area of Shanxi Province, 120 groups of Philip infiltration model parameters were obtained, with the help of MATLAB software. A multivariate nonlinear transfer function model with soil temperature, organic matter mass fraction, soil moisture content, soil volume mass, physical clay content as input factor and Philip infiltration model parameters as output factors was established. The accuracy of the model is verified with the measured data. The results show that the relative errors of the prediction parameters are less than 11 and the prediction accuracy is within the acceptable range.
【作者单位】： 太原理工大学水利科学与工程学院;
【基金】：国家自然科学基金项目(40671081) 山西省水利厅科研项目—山西省地面畦灌节水技术参数手册研编
【分类号】：S152.7
[Abstract]:In order to meet the requirement of water storage irrigation management in seasonal permafrost region during winter, based on the soil moisture infiltration test of seasonal frozen soil in winter in Fenhe Irrigation area of Shanxi Province, 120 groups of Philip infiltration model parameters were obtained, with the help of MATLAB software. A multivariate nonlinear transfer function model with soil temperature, organic matter mass fraction, soil moisture content, soil volume mass, physical clay content as input factor and Philip infiltration model parameters as output factors was established. The accuracy of the model is verified with the measured data. The results show that the relative errors of the prediction parameters are less than 11 and the prediction accuracy is within the acceptable range.
【作者单位】： 太原理工大学水利科学与工程学院;
【基金】：国家自然科学基金项目(40671081) 山西省水利厅科研项目—山西省地面畦灌节水技术参数手册研编
【分类号】：S152.7
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