Effect of rainfall on matric suctions in a residual soil slope

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Effect of rainfall on matric suctions in a residual soil slope

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dc.contributor.author Lim, T. T.
dc.contributor.author Rahardjo, Harianto
dc.contributor.author Chang, M. F.
dc.contributor.author Fredlund, Delwyn G.
dc.date.accessioned 2011-12-09T06:33:05Z
dc.date.available 2011-12-09T06:33:05Z
dc.date.copyright 1996
dc.date.issued 2011-12-09
dc.identifier.citation Lim, T. T., Rahardjo, H., Chang, M. F., & Fredlund, D. G. (1996). Effect of Rainfall on Matric Suction in a Residual Soil Slope. Canadian Geotechnical Journal, 33(4), 618-628.
dc.identifier.uri http://hdl.handle.net/10220/7383
dc.description.abstract A slope stability study involving shallow slip surfaces should include the effect of negative pore-water pressures in a slope. A field instrumentation program was carried out to monitor negative pore-water pressure (i.e., in situ matric suction) in a residual soil slope in Singapore. Variations in matric suction and the matric suction profiles under (1) a canvas-convered grassed surface, (2) a grassed surface, and (3) a bare ground surface, in response to rainfalls were investigated. Changes in matric suction due to changes in climatic conditions decrease rapidly with depth. The change was found to be most significant in the bare slope and least significant under the canvas-covered slope. The amount of decrease in matric suction after a rainstorm was observed to be a function of the initial matric suction just prior to the rainstorm. Positive pore-water pressures were observed above the groundwater table, suggesting the development of a perched water table within the slope. These observations are also typical of other regions experiencing high seasonal rainfalls. The field monitoring program presented can be adopted for investigating rainfall-induced landslides in other parts of the world.
dc.language.iso en
dc.relation.ispartofseries Canadian geotechnical journal
dc.rights © 1996 Canadian Science Publishing
dc.subject DRNTU::Engineering::Civil engineering::Geotechnical
dc.title Effect of rainfall on matric suctions in a residual soil slope
dc.type Journal Article
dc.contributor.school School of Civil and Environmental Engineering
dc.identifier.doi http://dx.doi.org/10.1139/t96-087
dc.description.version Accepted version

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