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dc.contributor.authorTourchi, Saeed
dc.contributor.authorVaunat, Jean
dc.contributor.authorGens Solé, Antonio
dc.contributor.authorBumbieler, F.
dc.contributor.authorVu, Minh-Ngoc
dc.contributor.authorArmand, G.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2021-10-26T15:30:00Z
dc.date.available2023-02-21T01:28:46Z
dc.date.issued2021-05
dc.identifier.citationTourchi, S. [et al.]. A full-scale in situ heating test in Callovo-Oxfordian claystone: observations, analysis and interpretation. "Computers and geotechnics", Maig 2021, vol. 133, p. 104045:1-104045:25.
dc.identifier.issn0266-352X
dc.identifier.urihttp://hdl.handle.net/2117/354625
dc.description.abstractThe paper describes the performance, observations and numerical interpretation of a full-scale in situ heating test conducted on Callovo-Oxfordian (COx) claystone in the Meuse / Haute-Marne (MHM) Underground Research Laboratory (URL) simulating a heat-emitting, high-level radioactive waste disposal concept. In the experiment, five heaters 3 m-long are placed in the axis of a microtunnel excavated in COx claystone to simulate the heat production of radioactive waste. The test is fully instrumented, and attention is focused on the near-field region's thermo-hydro-mechanical (THM) behaviour consisting of the casing surrounding the heater and the host formation (COx claystone). The interpretation of the test is assisted by the performance of a numerical analysis based on a coupled formulation incorporating the relevant THM phenomena. The calculations have used a constitutive law especially developed for this type of material. Initial and boundary conditions for analysis as well as material parameters are determined from a comprehensive field and laboratory experimental programme. The paper presents and discusses the thermal, hydraulic and mechanical observations in COx claystone, casing and an annular air-filled gap between the host formation and the casing. Special attention is also paid to the mechanisms involved in the interface between the rock and the casing. Heating has been applied in two stages; a cooling stage (also applied in steps) completes the experiment. The numerical analysis performed has proved able to represent the progress of the experiment very satisfactorily. By performing the 3D numerical analysis, it has been possible to incorporate anisotropies of material parameters and of in situ stresses. The performance and analysis of the in situ test have significantly enhanced the understanding of a complex THM problem and have proved the capability of the numerical formulation to provide adequate modelling capacity.
dc.description.sponsorshipThe technical and financial support of the Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA) is gratefully acknowledged.
dc.language.isoeng
dc.publisherElsevier
dc.rights© 2019. Elsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subjectÀrees temàtiques de la UPC::Energies::Energia nuclear
dc.subjectÀrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament dels residus
dc.subject.lcshRadioactive waste disposal in the ground--Mathematical models
dc.subject.otherIn situ heating test
dc.subject.otherCOx claystone
dc.subject.otherNumerical modelling
dc.subject.otherTHM coupling
dc.subject.otherRadioactive waste disposal
dc.subject.otherTemperature effects
dc.titleA full-scale in situ heating test in Callovo-Oxfordian claystone: observations, analysis and interpretation
dc.typeArticle
dc.subject.lemacResidus radioactius -- Emplaçament -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.identifier.doi10.1016/j.compgeo.2021.104045
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S0266352X21000483
dc.rights.accessOpen Access
local.identifier.drac31893955
dc.description.versionPostprint (author's final draft)
local.citation.authorTourchi, S.; Vaunat, J.; Gens, A.; Bumbieler, F.; Vu, M.; Armand, G.
local.citation.publicationNameComputers and geotechnics
local.citation.volume133
local.citation.startingPage104045:1
local.citation.endingPage104045:25


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