Show simple item record Blatz, JA Ferreira, NJ Graham, J 2007-09-10T11:47:27Z 2007-09-10T11:47:27Z 2004-12-03T11:47:27Z
dc.identifier.citation 0008-3674; CAN GEOTECH J, DEC 2004, vol. 41, no. 6, p.1111 to 1126. en
dc.description.abstract In 1999, after a period of extensive rainfall, two shallow slope failures developed in the right-of-way of Provincial Road 259 near Virden, Manitoba. The rainfall caused dissipation of soil suction in the near-surface soil, thereby reducing shear resistance and triggering failure. A research project was initiated between the Geotechnical Group at the University of Manitoba and the Manitoba Department of Highways and Transportation to assess the mechanism of failure. The project included a field investigation program, laboratory testing program, and advanced numerical modeling to identify the cause of failure. The results demonstrate that the rainfall resulted in dissipation of the suction in the soil slope, resulting in a reduction in the soil shear strength that triggered shallow failures. The dissipation of the soil suction has been modeled using a time-dependent seepage model that accounts for the flux boundary condition that existed at the ground surface. en
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dc.format.mimetype application/pdf
dc.language.iso en_US
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dc.rights info:eu-repo/semantics/restrictedAccess
dc.subject slope stability en
dc.subject unsaturated soils en
dc.subject laboratory tests en
dc.subject soil suction en
dc.subject seepage modeling en
dc.subject flux boundary en
dc.subject SHEAR-STRENGTH en
dc.subject SUCTION en
dc.subject STABILITY en
dc.subject LANDSLIDE en
dc.subject MODEL en
dc.subject TILL en
dc.title Effects of near-surface environmental conditions on instability of an unsaturated soil slope en
dc.status Peer reviewed en

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