A combination method of experimental and numerical estimations for predicting the relative hydraulic conductivity of unsaturated soil
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Abstract:
The relative hydraulic conductivity of unsaturated soil is sensitive to the change of saturation, so it is hard to determine the relative hydraulic conductivity through experiments. Based on the generalized Darcy cs Law and van Genuchten cs model, a simplified numerical model for predicting the relative hydraulic conductivity of unsaturated soil was derived. T hrough the simple evaporation experiment and numerical analysis, the relative hydraulic conductivity with function of water saturation was ob2 tained. T he numerical results were compared with the observed experimental data, which suggested that this method has certain reliability and it has certain innovation in the aspects of the finite element back analysis of model parameters. However, the prac 2 tical accuracy of the new method needs further verification through experimental comparison.
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