凍融土壤Philip入滲模型參數的非線性傳輸函數模型研究
發(fā)布時間:2018-12-30 16:10
【摘要】:為滿足季節(jié)性凍土地區(qū)越冬期間儲水灌溉管理的需求,基于山西省汾河灌區(qū)季節(jié)性凍土的冬季大田土壤水分入滲試驗,得到了120組Philip入滲模型參數實測樣本,借助MATLAB軟件,建立了以土壤溫度、有機質質量分數、土壤含水率、土壤體積質量、物理性黏粒量為輸入因子、以Philip入滲模型參數吸滲率和穩(wěn)滲率為輸出因子的多元非線性傳輸函數模型,并用實測資料對該模型進行了精度檢驗。結果表明,預測參數的相對誤差均小于11%,預報精度在可接受范圍之內。
[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.
【作者單位】: 太原理工大學水利科學與工程學院;
【基金】:國家自然科學基金項目(40671081) 山西省水利廳科研項目—山西省地面畦灌節(jié)水技術參數手冊研編
【分類號】: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.
【作者單位】: 太原理工大學水利科學與工程學院;
【基金】:國家自然科學基金項目(40671081) 山西省水利廳科研項目—山西省地面畦灌節(jié)水技術參數手冊研編
【分類號】:S152.7
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