| 引用本文: | 郭瑞,张馨,郑文刚,等.宏观毛管长度与土壤导水性状模型的关系[J].灌溉排水学报,,():-. |
| guorui,zhangxin,zhengwengang,et al.宏观毛管长度与土壤导水性状模型的关系[J].灌溉排水学报,,():-. |
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| 摘要: |
| 本文介绍了宏观毛管长度(Macroscopic Capillary Length)这一概念产生的背景,并对采纳两种常用的导水性状模型,即Brooks-Corey模型和van Genuchten模型时,宏观毛管长度随基模吸力的变化进行了计算,结果表明：当采用Brooks-Corey模型和van Genuchten模型时,宏观毛管长度并非一个常数,因此宏观毛管长度这一概念应该与Gardner定义的指数型导水率曲线模型匹配使用。 |
| 关键词: 宏观毛管长度; 导水性状; Gardner模型; Brooks-Corey模型; van Genuchten模型 |
| DOI： |
| 分类号:S152.7+2 |
| 基金项目: |
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| Relationship Between Macroscopic Capillary Length and Soil Hydraulic Property Models |
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guorui, zhangxin, zhengwengang, xuexuzhang
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Beijing Research Center of Intelligent Equipment for Agriculture
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| Abstract: |
| The background of the concept "macroscopic capillary length" was introduced in the paper. The influence of two hydraulic properties models，the Brooks-Corey model and the van Genuchten Model, on the relationship between matric suctions and macroscopic capillary length values were calculated. The calculation results showed that macroscopic capillary length was not a constant for a soil when the Brooks-Corey model or the van Genuchten model was adopted. It was recommended in the paper that the application of the concept of "macroscopic capillary length" should be coupled with the exponential hydraulic conductivity function defined by Gardner. |
| Key words: Macroscopic capillary length; hydraulic properties; van Genuchten Model; Brooks-Corey Model; Gardner Model |
