Show simple document record

dc.contributor.authorLacroix Vachon, Benoitfr
dc.contributor.authorAbdolah Zadeh, Amir Massoodfr
dc.contributor.authorCabral, Alexandrefr
dc.date.accessioned2020-05-26T19:59:47Z
dc.date.available2020-05-26T19:59:47Z
dc.date.created2015fr
dc.date.issued2020-05-26
dc.identifier.urihttp://hdl.handle.net/11143/17087
dc.description.abstractAbstract: Covers with capillary barrier effect (CCBE) have already been proposed to meet regulatory requirements for landfill final covers. Modeling of CCBE may be a relatively complex and time consuming task. Simpler, albeit conservative, design tools – such as steady state numerical analyses – can be, in certain cases, justifiable and have a positive impact in the practice. In this study, we performed numerical simulations of the experimental CCBE constructed on the Saint-Tite-des-Caps landfill (Quebec). The CCBE consists of a capillary barrier, composed of sand and gravel, on top of which a layer of deinking by-products (DBP) was installed as a protective layer (also to control seepage). The addition of a protective layer over the infiltration control layer (such as a capillary barrier) is required nearly everywhere. In many European countries, such as Germany and the Netherlands, a thick “recultivation” layer is required. The results of numerical simulations were compared to the in situ behaviour of the Saint-Tite CCBE as well as to analytical solutions. The effectiveness of the capillary barrier was assessed by quantifying the diversion length (DL), which reflects the lateral drainage capacity of the CCBE, i.e. the capacity to drain water laterally. The latter, if collected, prevents seepage into the waste mass. This study shows that, when the seepage rate reaching the top layer of the capillary barrier is controlled, it is possible to predict the worst case scenario in terms of seepage (and therefore predict the shortest DL) using steady state numerical simulations. These simpler-to-perform numerical simulations could be adopted, at least in a pre-feasibility study for cases with a similar profile as the one at the Saint-Tite-des-Caps experimental CCBE.fr
dc.language.isoengfr
dc.relation.isformatofhttps://doi.org/10.1139/cgj-2014-0353fr
dc.relation.ispartofISSN:1208-6010fr
dc.relation.ispartofCanadian Geotechnical Journalfr
dc.rightsAttribution - Pas d’Utilisation Commerciale - Pas de Modification 2.5 Canada*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/ca/*
dc.subjectLandfillsfr
dc.subjectDeinking by-productsfr
dc.subjectFinal coversfr
dc.subjectAlternative cover designfr
dc.titlePredicting the diversion length of capillary barriers using steady state and transient state numerical modeling: Case study of the Saint-Tite-des-Caps landfill final coverfr
dc.typeArticlefr
udes.description.typestatusPost-publicationfr
udes.description.typepubRévisé et accepté par des pairsfr
udes.description.pages2141-2148fr
udes.description.period52(12)fr
udes.description.diffusionDiffusé par Savoirs UdeS, le dépôt institutionnel de l'Université de Sherbrookefr
dc.identifier.bibliographicCitationLacroix Vachon, B., Abdolahzadeh, A. M. et Cabral, A. R. (sous presse). (2015). Predicting the diversion length of capillary barriers using steady state and transient state numerical modeling: case study of the Saint-Tite-des-Caps landfill final cover. "Canadian Geotechnical Journal", 52(12), 2141-2148. https://doi.org/10.1139/cgj-2014-0353fr
udes.description.sourceCanadian Geotechnical Journalfr
udes.autorisation.depottruefr
udes.description.ordreauteursLacroix Vachon, Benoit; Abdolah Zadeh, Amir Massood; Cabral, Alexandrefr


Files in this document

Thumbnail
Thumbnail

This document appears in the following Collection(s)

Show simple document record

Attribution - Pas d’Utilisation Commerciale - Pas de Modification 2.5 Canada
Except where otherwise noted, this document's license is described as Attribution - Pas d’Utilisation Commerciale - Pas de Modification 2.5 Canada