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dc.contributor.authorAlonso Pérez de Agreda, Eduardo
dc.contributor.authorPinyol Puigmartí, Núria Mercè
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.date.accessioned2011-01-25T13:08:04Z
dc.date.available2011-01-25T13:08:04Z
dc.date.created2009
dc.date.issued2009
dc.identifier.citationAlonso, E.; Pinyol, N.M. Slope stability under rapid drawdown conditions. A: Italian Workshop on Landslides. "First Italian Workshop on Landslides". Napols: 2009, p. 11-27.
dc.identifier.urihttp://hdl.handle.net/2117/11200
dc.description.abstractThe rapid drawdown condition arises when submerged slopes experience rapid reduction of the external water level. Classical analysis procedures are grouped in two classes: the “stress-based” undrained approach, recommended for impervious materials and the flow approach, which is specified for rigid pervious materials (typically a granular soil). Field conditions often depart significantly from these simplified cases and involve materials of different permeability and compressibility arranged in a complex geometry. The drawdown problem is presented in the paper as a fully coupled flow-deformation problem for saturated/unsaturated conditions. Some fundamental concepts are first discussed in a qualitative manner and, later, explored in more detail through the analysis of two embankment dams. In Shira earthdam pore pressures were recorded at different points inside the embankment as a consequence of a controlled drawdown. Predictions of four calculation procedures (instantaneous drawdown, pure flow, coupled flow-elastic and coupled flow-elastoplastic, all of them for saturated/unsaturated conditions) are compared with measured pressure records. Only the coupled analysis provides a consistent and reasonable solution. The case of a large landslide, immediate to a reservoir, reactivated by a condition of rapid drawdown is also described in the paper.
dc.format.extent17 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Riscos geològics
dc.subject.lcshLandslide hazard analysis
dc.titleSlope stability under rapid drawdown conditions
dc.typeConference report
dc.subject.lemacEsllavissades -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.identifier.drac4476628
dc.description.versionPostprint (author’s final draft)
local.citation.authorAlonso, E.; Pinyol, N.M.
local.citation.contributorItalian Workshop on Landslides
local.citation.pubplaceNapols
local.citation.publicationNameFirst Italian Workshop on Landslides
local.citation.startingPage11
local.citation.endingPage27


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