| Mualem模型中的饱和导水率修正研究 |
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| 引用本文： | 张昊,顾强康,张仁义.Mualem模型中的饱和导水率修正研究[J].水土保持通报,2015,35(3):168-171. |
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| 作者姓名： | 张昊 顾强康 张仁义 |
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| 作者单位： | 空军工程大学机场建筑工程系 |
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| 基金项目： | 省部级项目“陕西延安机场工程” |
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| 摘 要： | 目的]提高Mualem模型计算非饱和导水率的准确性。方法]采用理论推导结合数据统计的方法研究该模型中的饱和导水率ks修正问题。基于Brooks—Corey土壤水分特征曲线模型,建立修正导水率ko与土壤水分特征曲线之间的理论关系式;通过回归分析得到ko与土壤水分特征曲线之间的理论关系式中相关参数。结果]利用原状黄土的非饱和渗透试验数据,对考虑修正导水率ko的Mualem模型的准确性进行了验证,得到了比较满意的结果。结论]研究成果可用于依据土壤水分特征曲线直接确定非饱和土导水率,对非饱和导水率预测研究具有一定参考价值。
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| 关 键 词： | 非饱和土 非饱和导水率 Mualem模型 饱和导水率 修正导水率 土壤水分特征曲线 |
| 收稿时间： | 2014/11/12 0:00:00 |
| 修稿时间： | 2014/12/2 0:00:00 |
Modification of Saturated Hydraulic Conductivity in Mualem Model |
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| ZHANG Hao,GU Qiangkang and ZHANG Renyi.Modification of Saturated Hydraulic Conductivity in Mualem Model[J].Bulletin of Soil and Water Conservation,2015,35(3):168-171. |
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| Authors: | ZHANG Hao GU Qiangkang and ZHANG Renyi |
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| Institution: | ZHANG Hao;GU Qiangkang;ZHANG Renyi;Department of Airport Architectural Engineering,Air Force Engineering University; |
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| Abstract: | Objective] In order to improve the accuracy of saturated hydraulic conductivity in the Mualem model. Methods] The modification of the saturated hydraulic conductivity ks in the Mualem model was studied by theoretical method combined with data statistics. Based on the Brooks-Corey soil-water characteristic curve(SWCC) of unsaturated soil, a theoretical relationship between modified hydraulic conductivity and SWCC was presented, in which the correlation parameter was solved by regression analysis. Results] Experimental data of undisturbed loess were used to evaluate the prediction outcomes of the Mualem model considering modified hydraulic conductivity ko, which showed satisfactory result. Conclusion] This theoretical model can be used to determine unsaturated hydraulic conductivity directly from SWCC, which possesses some references for further research on the prediction of unsaturated hydraulic conductivity. |
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| Keywords: | unsaturated soils unsaturated hydraulic conductivity Mualem model saturated hydraulic conductivity modified hydraulic conductivity soil-water characteristic curve |
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