A Study reffered to the Influence of Heterogeneities in Porous Media on Hydraulic Conductivity and Soil Hydraulic Property
Date Issued
2008
Date
2008
Author(s)
Lin, Hung-Ju
Abstract
The ground water plays an important role in water resources system. The models of ground water are presented more and more by the increasing frequency of using ground water resources. How to set the parameters correctly becomes a key of a successful simulation for users. Especially for In-situ test, the soil characteristics in the subsurface are not homogeneous; the heterogeneities have an enormous influence on the transport of ground water flow or chemical. For this reason, we solve this problem by a constant head sand-box experiment at different hydraulic gradient with heterogeneities in porous media. Then we compare the result with the VSAFT2 model and use the V.G. formula to simulate the hydraulic properties curves. The results reveal that when the heterogeneities increase or the distribution of porous media becomes complicated, the hydraulic conductivity will decreases and the hydraulic properties curves will change. Finally, it can be concluded that the VSAFT2 model is reliable by comparing the results of experiment and model simulation.
Subjects
heterogeneity
sand-box experiment
hydraulic conductivity
V.G. formula
Type
thesis
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