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dc.contributor.authorAlonso Pérez de Agreda, Eduardo
dc.contributor.authorHoffmann Jauge, Christian
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.identifier.citationAlonso, E.E.; Hoffmann, C. Modelling the field behaviour of a granular expansive barrier. Physics and Chemistry of the Earth (2007, vol. 32, no. 8-14, pp. 850-865).
dc.description.abstractThe large scale ‘‘Engineered Barrier’’ (EB) experiment, performed at the Mont Terri Underground Laboratory is described. A coupled hydromechanical model is then used to simulate the test performance. Constitutive parameters for the bentonite granular backfill are based on experimental work described in a companion paper. An elastoplastic model describes the granular fill, while the host rock is simulated by a damage model. Predictions of EDZ development around the tunnel are compared with some indirect measurements. Calculated evolutions of relative humidity and stresses within the buffer are compared with sensor records. Good agreement was found for the bentonite blocks supporting the canister. The granular expansive fill exhibit a more irregular behavior. Calculated displacements of the canister agree in absolute terms with actual measurements.
dc.format.extent16 p.
dc.subject.lcshWaste disposal
dc.subject.lcshCase studies
dc.subject.lcshElastoplasticity--Mathematical models
dc.subject.otherCase history
dc.subject.otherHydro-mechanical model
dc.subject.otherWaste disposal
dc.subject.otherElastoplastic constitutive model
dc.subject.otherExcavation disturbed zone
dc.titleModelling the field behaviour of a granular expansive barrier
dc.subject.lemacResidus -- Emmagatzematge
dc.subject.lemacEstudi de casos
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access

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