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Position: Home > Articles > Modification of Saturated Hydraulic Conductivity in Mualem Model Bulletin of Soil and Water Conservation 2015,35 (3) 168-171

Mualem模型中的饱和导水率修正研究

作  者:
张昊;顾强康;张仁义
单  位:
空军工程大学机场建筑工程系
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
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。
译  名:
Modification of Saturated Hydraulic Conductivity in Mualem Model
作  者:
ZHANG Hao;GU Qiangkang;ZHANG Renyi;Department of Airport Architectural Engineering,Air Force Engineering University;
关键词:
unsaturated soils;;unsaturated hydraulic conductivity;;Mualem model;;saturated hydraulic conductivity;;modified hydraulic conductivity;;soil-water characteristic curve
摘  要:
[Objective]In order to improve the accuracy of saturated hydraulic conductivity in the Mualem model.[Methods]The modification of the saturated hydraulic conductivity ksin 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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