Gas flow through clay barriers

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dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.contributor.author	Olivella Pastallé, Sebastià
dc.contributor.author	Alonso Pérez de Agreda, Eduardo
dc.date	2008
dc.identifier.citation	Olivella Pastallé, Sebastià; Alonso, Eduardo. Gas flow through clay barriers. "Géotechnique", 2008, vol. 58, núm. 3, p. 157-176.
dc.identifier.citation	1751-7656
dc.identifier.uri	http://hdl.handle.net/2117/6053
dc.language.iso	eng
dc.publisher	Institution of Civil Engineers (http://www.ice.org.uk/)
dc.relation	http://www.icevirtuallibrary.com/content/article/10.1680/geot.2008.58.3.157
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subject	Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament dels residus
dc.subject	Radioactive waste disposal
dc.subject	Clays and the environment
dc.subject	Case history
dc.subject	Numerical modelling
dc.subject	Partial saturation
dc.subject	Clay -- permeability
dc.subject	Pore pressures
dc.subject	Radioactive waste disposal
dc.subject	Residus radioactius -- Emmagatzematge
dc.subject	Argila
dc.title	Gas flow through clay barriers
dc.type	info:eu-repo/semantics/article
dc.description.abstract	"Geotechnical Research Medal" de la Institution of Civil Engineers (London)
dc.description.abstract	A model for the simulation of gas flow in clayey rocks and clays is described. Gas migration is associated with the development of preferential paths along existing or pressure-dependent discontinuities. The model handles the combined phenomena of two-phase (air and liquid) flow and the generation of discrete paths. Aperture of discrete paths is the main variable to account for permeability and capillary pressure variations. The model, which has been implemented in a general thermo-hydromechanical code, is used to simulate two experiments (laboratory and field). The laboratory experiment involved gas flow through shale specimens tested in a triaxial cell. In the field experiment, gas flow was forced through a sand–bentonite barrier. Experimental results and model calculations are compared in the paper.
dc.description.abstract	Peer Reviewed
dc.description.abstract	Award-winning

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