[Mécanismes de migration des radionucléides d'un stockage de déchets radioactifs dans l'argile vers la surface]
Cet article constitue une revue critique des connaissances actuelles sur la migration des éléments en solution dans les milieux argileux. Les principaux mécanismes de migration dans les formations argileuses d'un bassin sédimentaire sont passés en revue : advection par compaction, convection thermique, migration par expulsion des hydrocarbures, mise en charge gravitaire, osmose, diffusion moléculaire, dispersion hydrodynamique. Les argiles du Callovo-Oxfordien du bassin de Paris, aux confins de la Meuse et de la Haute Marne, à Bure, où la France conduit des recherches sur la faisabilité d'un éventuel stockage de déchets radioactifs, sont données en exemple. Des travaux récents sur la distribution de l'hélium dans les aquifères du bassin de Paris permettent de confirmer l'importance du transfert par diffusion dans les séries argileuses. Les transferts dans les aquifères sont également décrits, et les principales causes d'incertitude des migrations sont précisées.
This article is a critical review of the current understanding of migration processes of solutes in clay. The major migration mechanisms are examined: advection through compaction, thermal convection, migration by hydrocarbon expulsion, gravitational flow, osmosis, molecular diffusion, hydrodynamic dispersion. Examples are taken from the Callovo-Oxfordian clays of the Paris basin in the Meuse/Haute Marne area, near Bure, where France is studying the feasibility of a potential nuclear waste disposal facility. Recent work on the helium distribution in the aquifers of the Paris Basin confirms the importance of molecular diffusion for solute transport in clays. Migration in aquifers is also described, and the major causes of uncertainties for solute migration are discussed.
Accepté le :
Publié le :
Mots-clés : argiles, compaction, diffusion, sorption, osmose, radionucléides, bassins sédimentaires
Ghislain de Marsily 1 ; Julio Gonçalvès 1 ; Sophie Violette 1 ; Maria-Clara Castro 2
@article{CRPHYS_2002__3_7-8_945_0,
author = {Ghislain de~Marsily and Julio Gon\c{c}alv\`es and Sophie Violette and Maria-Clara Castro},
title = {Migration mechanisms of radionuclides from a clay repository toward adjacent aquifers and the surface},
journal = {Comptes Rendus. Physique},
pages = {945--959},
publisher = {Elsevier},
volume = {3},
number = {7-8},
year = {2002},
doi = {10.1016/S1631-0705(02)01385-3},
language = {en},
}
TY - JOUR AU - Ghislain de Marsily AU - Julio Gonçalvès AU - Sophie Violette AU - Maria-Clara Castro TI - Migration mechanisms of radionuclides from a clay repository toward adjacent aquifers and the surface JO - Comptes Rendus. Physique PY - 2002 SP - 945 EP - 959 VL - 3 IS - 7-8 PB - Elsevier DO - 10.1016/S1631-0705(02)01385-3 LA - en ID - CRPHYS_2002__3_7-8_945_0 ER -
%0 Journal Article %A Ghislain de Marsily %A Julio Gonçalvès %A Sophie Violette %A Maria-Clara Castro %T Migration mechanisms of radionuclides from a clay repository toward adjacent aquifers and the surface %J Comptes Rendus. Physique %D 2002 %P 945-959 %V 3 %N 7-8 %I Elsevier %R 10.1016/S1631-0705(02)01385-3 %G en %F CRPHYS_2002__3_7-8_945_0
Ghislain de Marsily; Julio Gonçalvès; Sophie Violette; Maria-Clara Castro. Migration mechanisms of radionuclides from a clay repository toward adjacent aquifers and the surface. Comptes Rendus. Physique, Volume 3 (2002) no. 7-8, pp. 945-959. doi : 10.1016/S1631-0705(02)01385-3. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/S1631-0705(02)01385-3/
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