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Philip入渗模型参数的非线性预报模型

作  者:
郭华;樊贵盛
单  位:
太原理工大学水利科学与工程学院
关键词:
Philip入渗模型;入渗参数;多元非线性;水分入渗;灰色关联
摘  要:
利用黄土高原区大田耕作土壤的水分入渗试验过程资料,拟合了Philip入渗模型参数,建立了以土壤体积含水率、干密度、粉、黏粒含量和有机质含量等土壤理化参数为输入变量,Philip入渗模型参数为输出变量的土壤传递函数,通过对函数的分析、检验,建立了土壤入渗参数S和A的多元非线性预测模型;在此基础上,运用灰色关联分析理论,将各输入变量进行了灰色排序。研究表明:用土壤体积含水率、干密度、粉粒含量、黏粒含量和有机质含量作为预报模型的输入参数可实现对入渗参数的预测,预测参数实测值与预测值之间的相对误差可控制在8%以下,所建立的非线性预测模型高度相关。
译  名:
A Nonlinear Prediction Model for Philip Infiltration Parameters
作  者:
GUO Hua;FAN Gui-sheng;College of Hydroscience and Engineering,Taiyuan University of Technology;
关键词:
philip infiltration model;;infiltration parameters;;multiple nonlinear;;water infiltration;;gray correlation
摘  要:
Using the soil water infiltration test data in the Loess Plateau as the background,the Philip infiltration model parameters were fitted,and the Pedo-Transfer Functions was established.Soil water content,soil bulk density,soil silt content and soil organic matter content were used as input parameters,and soil infiltration parameters were used as the output factors in Pedo-Transfer Functions.Multivariate nonlinear prediction models of infiltration parameter Sand A were established by analyzing and testing PedoTransfer Functions.On this basis,each input parameter was gray sorted by the gray relational analysis theory.The results showed that:it was reasonable to use soil water content,soil bulk density,soil silt content and soil organic matter content as input parameters to predict infiltration parameters,and the relative errors between the measured value and the predicted value could be controlled below 8%.The nonlinear relationship models were highly correlated.

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