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http://dx.doi.org/10.12652/Ksce.2013.33.3.1017

Influence of Soil Characteristic and Rainfall Intensity on Matric Suction of Unsaturated Weathered Soil Slope  

Kim, Yong Min (Yonsei University)
Lee, Kwang Woo (Yonsei University)
Kim, Jung Hwan (Yonsei University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.33, no.3, 2013 , pp. 1017-1025 More about this Journal
Abstract
The monolithically coupled finite element analysis for a deformable unsaturated soil slope is performed to investigate matric suction distribution on a soil slope subjected to rainfall infiltration, which can consider the hydraulic-mechanical characteristics for the analysis. The soil-water characteristic curves (SWCC) are experimentally determined to estimate three types of hydraulic properties of domestic areas. Based on the physical properties, the distribution of matric suction is investigated by considering the major factors, such as soil conditions, rainfall intensities, and slope angles. It is found from the results of this study that the matric suction rapidly decreases with an increase in rainfall intensity, regardless a slope angle. The slope surface is more easily saturated when its saturated hydraulic conductivity is smaller than rainfall intensity, and for the case of multi-layered soil slope, hydraulic characteristics of slope surface has a significant influence on matric suction distribution.
Keywords
Unsaturated soil; Seepage analysis; Slope failure; Soil-water characteristic curve; Matric suction; Finite element analysis;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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