| 用水平土柱估算土壤入渗性能和水分布简化模型方法 |
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| 引用本文： | 毛丽丽,雷廷武. 用水平土柱估算土壤入渗性能和水分布简化模型方法[J]. 农业机械学报, 2011, 42(1): 49-53，58 |
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| 作者姓名： | 毛丽丽 雷廷武 |
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| 作者单位： | 中国农业大学水利与土木工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目(40635027) |
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| 摘 要： | 在对Green-Ampt修正模型研究的基础上,根据水量平衡原理,提出了在水平土柱试验供水量、土壤初始与饱和含水率、土壤含水率线性分布假定的基础上计算土壤入渗性能的简化模型方法。用本研究提出的简化算法计算得到的土壤入渗性能与其他方法得到的结果非常接近。将该简化方法计算得到的土壤含水率分布与实测值进行比较表明,平均误差为4.18%,证明该方法估算的土壤含水率分布与实测值非常接近。结果表明该方法可以较为准确地估算土壤入渗性能在时间上及含水率在空间上的分布,能方便地应用到相关研究与应用中。
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| 关 键 词： | 水平土柱 Green-Ampt入渗模型 土壤含水率 修正模型 |
Simplified Method for Soil Water Distribution and Infiltrability Estimations |
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| Mao Lili and Lei Tingwu. Simplified Method for Soil Water Distribution and Infiltrability Estimations[J]. Transactions of the Chinese Society for Agricultural Machinery, 2011, 42(1): 49-53，58 |
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| Authors: | Mao Lili and Lei Tingwu |
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| Affiliation: | Mao Lili Lei Tingwu (College of Hydraulic and Civil Engineering,China Agricultural University,Beijing 100083,China) |
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| Abstract: | A simplified mathematic model was formed to estimate the soil infiltrability from the total water supply,the initial and saturated soil water content and the linear assumption of the soil water distribution based on the study of modified Green-Ampt model and the mass/water balance principle.The soil infiltrability estimated with this new simplified method is very close to the values calculated with the other methods.Comparisons were made between the predicted and measured soil water distribution.The average... |
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| Keywords: | Horizontal soil column Green-Ampt infiltration model Soil water content Modified model |
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