Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/101035
Title: Pore-water pressure characteristics of two instrumented residual soil slopes
Authors: Rahardjo, Harianto
Santoso, Vera Amalia
Leong, Eng Choon
Ng, Yew Song
Pang, Henry Tam Cheuk
Keywords: DRNTU::Engineering::Civil engineering::Geotechnical
Issue Date: 2010
Source: 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.
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.
URI: https://hdl.handle.net/10356/101035
http://hdl.handle.net/10220/7175
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/ ]
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Conference Papers

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