| 土壤吸湿-湿过程中水力传导度的拟合研究 |
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| 引用本文： | 郝鹏,郑西来,田守波,马玉杰,李伟.土壤吸湿-湿过程中水力传导度的拟合研究[J].地下水,2008,30(3):4-7. |
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| 作者姓名： | 郝鹏 郑西来 田守波 马玉杰 李伟 |
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| 作者单位： | 中国海洋大学,海洋环境与生态教育部重点实验室,山东,青岛,266100 |
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| 摘 要： | 非饱和含水介质在吸湿和脱湿的不同过程中，水力传导度随介质含水率的变化规律是不同的。本文选取大沽河流域两种代表性砂土，对其吸湿-脱湿两个过程分别进行试验观测，并使用VanGenuchten—Mualem模型对其吸湿-脱湿过程进行水力传导度的拟合。研究结果表明：砂土在吸湿过程的非饱和水力传导度与脱湿过程的非饱和水力传导度大小并不相同，在含水率相同的情况下，吸湿过程的水力传导度要比脱湿过程大，在含水率较低时（小于15％）相差可达1个数量级。
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| 关 键 词： | 吸湿-脱湿过程 土壤水分特征曲线 水力传导度 数值模拟 |
| 文章编号： | 1004-1184(2008)03-0004-03 |
| 修稿时间： | 2008年3月13日 |
Study on Simulation of Hydraulic Conductivity in the Soil Desorption-absorption Processes |
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| HAO Peng,ZHENG Xi-lai,TIAN Shou-bo,MA Yu-jie,LI Wei.Study on Simulation of Hydraulic Conductivity in the Soil Desorption-absorption Processes[J].Groundwater,2008,30(3):4-7. |
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| Authors: | HAO Peng ZHENG Xi-lai TIAN Shou-bo MA Yu-jie LI Wei |
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| Institution: | HAO Peng,ZHENG Xi-lai,TIAN Shou-bo,MA Yu-jie,LI Wei(Key Lab of Marine Environmental Science & Ecology,Ministry of Education,Ocean University of China Qingdao 266100,China) |
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| Abstract: | In desorption and absorption processes,the hydraulic conductivities of unsaturated water-bearing media are not identical.We selected two kinds of representative sandy from the Dagu River,observed the course,used Van theGenuchten-Mualem model to simulate the hydraulic conductivity in the two Processes.The results showed that the hydraulic conductivity in absorption process and the hydraulic conductivity in desorption process.moistureabsorption process are not to be certainly same.In the same moisture content... |
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| Keywords: | Desorption-absorption processes Curve of soil water characteristic hydraulic conductivity numerical simulation |
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