A Numerical Model of Infiltration Process on Partially Saturated Slopes.
Date Issued
2009
Date
2009
Author(s)
Chen, Hsiang-Ju
Abstract
Numerical analysis was employed and combined with laboratory results to understand the mechanism of the infiltration process in partially saturated slopes. The finite element analysis software, ABAQUS, was used in this study to simulate the process of infiltration into unsaturated slopes. Two infiltration tests performed in sandbox were simulated ; one slope was homogeneous and the other had bedding planes dipping at 10? with the horizontal. Rollers were set up at the left and right boundaries of the numerical model and the bottom boundary was hinged. Furthermore, water pressure form overland flow was applied on the crest of the slope. The drainage boundaries were the slope surface and the deposition area.he results of numerical analysis show that the water infiltrates vertically downward at the crest and flows parallel to the slope face in the upper part of the slope, but it flows outward from the slope in the lower part. Moreover, in the homogeneous slope, the initial yielding point occurred at the intersection of upper and lower slope faces and at the toe of the slope. Consequently, the principal stresses and the effective stresses decreased at the same time. In the intersection slope with bedding planes, the initial yielding point occurred only at the upper and lower slope faces. In addition, the development of plastic zones is accordance with the experimental results.
Subjects
unsaturated soils
slope
infiltration
stability
numerical analysis
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-98-R96521105-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):dee0f35fcd7fe9211decfb3926df8ef7