Modification of Saturated Hydraulic Conductivity in Mualem Model

ZHANG Hao; GU Qiangkang; ZHANG Renyi

doi:10.13961/j.cnki.stbctb.2015.03.003

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Modification of Saturated Hydraulic Conductivity in Mualem Model

- Modification of Saturated Hydraulic Conductivity in Mualem Model
- Bulletin of Soiland Water Conservation Vol. 35, Issue 3, Pages: 168-171(2015)
- 作者机构：
  
  空军工程大学机场建筑工程系,陕西,西安,710038
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.03.003
  CLC：
- Published：2015
- 稿件说明：
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ZHANG Hao, GU Qiangkang, ZHANG Renyi. Modification of Saturated Hydraulic Conductivity in Mualem Model[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 168-171.
DOI：

ZHANG Hao, GU Qiangkang, ZHANG Renyi. Modification of Saturated Hydraulic Conductivity in Mualem Model[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 168-171. DOI： 10.13961/j.cnki.stbctb.2015.03.003.

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k

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k

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k

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k

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。

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.

关键词

Keywords

references

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姚志华,陈正汉,黄雪峰,等.非饱和原状和重塑Q

黄土渗水特性研究[J].岩土工程学报,2012,34(6):1020-1027.

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