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Mechanical and Hydraulic Behaviour of Unsaturated Residual Soils

dc.creatorArango M.
dc.creatorParra M.
dc.creatorHidalgo C.
dc.date2019
dc.date.accessioned2021-02-05T14:59:29Z
dc.date.available2021-02-05T14:59:29Z
dc.identifier.issn17551307
dc.identifier.urihttp://hdl.handle.net/11407/6091
dc.descriptionThe negative effect of rains on the stability of the slopes is a problem that, added to anthropic factors and population settlements, currently generate not only material but also human losses. Therefore, the evaluation of threat by mass movements has become a first order problem. However, one of the aspects that presents the greatest uncertainty in these evaluations is the effect of soil saturation. This paper presents a methodology for evaluating the effect of rainfall by estimating the probability of soil saturation using the Richards equation and the first order and second moment method-FOSM. The methodology was applied considering two residual soils from the area of north-western Colombia named Aburra valley. For this purpose, a characterization of each material was made, evaluating the variability of shear strength parameters and hydraulic parameters. Subsequently, infiltration models were made using the Richards equation with a historical rain event that occurred between October 27 and November 13, 2010, which exceeded the failure thresholds established for the Aburra Valley and generated several landslides. The advance of the wetting front was evaluated, and the probability of saturation was determined. It was found that, in all the evaluated soils, full saturation reaches depths between 600 and 6000 mm and the probability of saturation is greater in soils from Stock de Altavista that report a lesser values of air entry suction. The mean values of φ b varies between 1.3° and 6.5° for soils from Stock de Altavista. © Published under licence by IOP Publishing Ltd.
dc.language.isoeng
dc.publisherInstitute of Physics Publishing
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85063510639&doi=10.1088%2f1755-1315%2f221%2f1%2f012016&partnerID=40&md5=9e3d082ad0c8ddeda55ad3b51b426f8d
dc.sourceIOP Conference Series: Earth and Environmental Science
dc.titleMechanical and Hydraulic Behaviour of Unsaturated Residual Soils
dc.typeConference Papereng
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.publisher.programIngeniería Civilspa
dc.identifier.doi10.1088/1755-1315/221/1/012016
dc.relation.citationvolume221
dc.relation.citationissue1
dc.publisher.facultyFacultad de Ingenieríasspa
dc.affiliationArango, M., School of Engineering, University of Medellin, Colombia, Colombia
dc.affiliationParra, M., School of Engineering, University of Medellin, Colombia, Colombia
dc.affiliationHidalgo, C., School of Engineering, University of Medellin, Colombia, Colombia
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dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.type.driverinfo:eu-repo/semantics/other


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