膜孔灌单向交汇入渗数学模型研究

Mathematical models of single-line interference infiltration from film holes

通过室内膜孔单向交汇入渗试验资料 ,分析了膜孔单向交汇入渗特性 ,在此基础上 ,根据不同的已知资料情况 ,提出了相应的 3个膜孔单向交汇入渗数学模型 ,其中模型 1是建立在膜孔单向交汇入渗相对膜孔自由入渗的减渗量参数和膜孔自由入渗参数已知条件下的一个入渗模型 ,模型 2建立在膜孔单向交汇入渗的自由入渗阶段和交汇入渗阶段的入渗参数均为已知的基础上 ,模型 3建立在膜孔单向交汇入渗相对膜孔自由入渗减渗率和自由入渗参数为已知的基础上。经实测资料验证表明 ,3个模型均为计算膜孔单向交汇入渗量的有效模型 ,这一研究成果可为膜孔灌技术研究提供参考。

By experimental data, characteristic of film hole single line interference infiltration was analyzed. The three mathematical models of film hole single line interference infiltration were proposed under different conditions of known data. Model 1 is based on that the parameters of the reduced infiltration volume that film hole single line interference infiltration as compared with film hole free infiltration and of the film hole free infiltration are known; Model 2 is based on that the infiltration parameters of two stages of film hole single line infiltration——film hole free infiltration and interference infiltration are known; Model 3 is based on that the rate of reduced infiltration that film hole single line interference as compared with film hole free infiltration and the parameter of free infiltration are known. The calculation precision of the model was verified by experimental data. The results provide reference for further study of film hole irrigation.