| 摘要: |
| 通过室内膜孔单点源入渗试验,分析了膜孔灌单点源入渗单位面积侧渗量与一维垂直入渗量的变化规律,研究了膜孔灌单点源入渗单位面积侧渗量与入渗时间、膜孔直径之间的关系,建立了包含垂直一维入渗量和侧渗量的两个具有明确物理意义的膜孔单点源入渗模型,只需知道垂直一维入渗参数、膜孔直径和入渗时间,即可用于膜孔单点源入渗量的计算。实例验证结果表明,两个模型计算精度高,应用方便,均为计算膜孔单点入渗量的有效模型。 |
| 关键词: 膜孔灌 单点源入渗 入渗特性 一维垂直入渗 入渗模型 |
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| 基金项目:国家自然科学基金项目（50579064；50179030）；陕西省高校重点实验室重点科研项目（30JS041） |
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| Study on the infiltration characteristic and the mathematical model of the point source free infiltration under film hole irrigation |
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| Abstract: |
| Based on the indoor experiment of film hole infiltration,the rule of the side infiltration volume per unit area under film hole single point infiltration and one-dimensional vertical infiltration volume per unit area and the relationship between side infiltration volume,infiltration time and film hole diameter are studied.Then the relationship between the side infiltration volume and vertical volume per unit area are set up.Thereby two single point source infiltration models including the side infiltration volume and one-dimensional vertical volume are established.The models have obvious physical meaning and can be used conveniently for calculating infiltration volume only with vertical infiltration parameter and film hole diameter and infiltration time.With good preciseness,the two models are effective for calculating infiltration volume. |
| Key words: film hole irrigation,single point source infiltration,infiltration characteristic,one-dimensional vertical infiltration,infiltration model |
