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Pore-water pressure characteristics of two instrumented residual soil slopes

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Pore-water pressure characteristics of two instrumented residual soil slopes

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dc.contributor.author Rahardjo, Harianto
dc.contributor.author Santoso, Vera Amalia
dc.contributor.author Leong, Eng Choon
dc.contributor.author Ng, Yew Song
dc.contributor.author Pang, Henry Tam Cheuk
dc.date.accessioned 2011-10-07T04:09:46Z
dc.date.available 2011-10-07T04:09:46Z
dc.date.copyright 2010
dc.date.issued 2011-10-07
dc.identifier.citation Rahardjo, H., Santoso, V. A., Leong, E. C., Ng, Y. S. & Pang, H. T. C. (2010). Pore-water pressure characteristics of two instrumented residual soil slopes. Paper presented at the 4th Asia-Pacific Conference on Unsaturated Soils, Newcastle, Australia, pp.333-339.
dc.identifier.uri http://hdl.handle.net/10220/7175
dc.description.abstract Responses of pore-water pressures in unsaturated soil slopes during rainfall have major influences in triggering slope failures. Two fully instrumented residual soil slopes located in two major geological formations in Singapore, that are Bukit Timah Granite and sedimentary Jurong Formation, were monitored for a period of several months. Real-time monitoring systems in the slopes were used to provide pore-water pressure, rainfall, and ground water level data. Characteristics of pore-water pressure distributions in both slopes during rainfalls were studied and compared. The monitoring results indicate that the Bukit Timah Granite residual soil slope has a deeper ground water table and a thicker unsaturated zone than the sedimentary Jurong Formation residual soil slope. A higher permeability of the Bukit Timah Granite residual soil results in a faster change in negative pore-water pressure due to rainwater infiltration as compared to those of the sedimentary Jurong Formation residual soil. Consequently, changes in shear strength and factor of safety of the Bukit Timah Granite residual soil slope during rainfall have different characteristics than those of the Jurong Formation residual soil. The differing characteristics of pore-water pressure responses during rainfall in these two residual soils are analyzed and highlighted in the paper.
dc.language.iso en
dc.rights © 2010 Taylor & Francis Group. This is the author created version of a work that has been peer reviewed and accepted for publication by 4th Asia-Pacific Conference on Unsaturated Soils, Newcastle, Australia, Taylor & Francis Group. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The official website of publisher is available at: [URL: http://www.taylorandfrancisgroup.com/ ]
dc.subject DRNTU::Engineering::Civil engineering::Geotechnical.
dc.title Pore-water pressure characteristics of two instrumented residual soil slopes
dc.type Conference Paper
dc.contributor.conference Asia-Pacific Conference on Unsaturated Soils (4th : 2009 : Newcastle, Australia)
dc.contributor.school School of Civil and Environmental Engineering
dc.description.version Accepted version
dc.contributor.organization Building Technology Department, Housing and Development Board, Singapore

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