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Using shear strain localisation to model the fracturing around gallery in unsaturated Callovo-Oxfordian claystone
Pardoen, Benoît; Levasseur, Séverine; Collin, Frédéric
2015In Chau, Kam Tim; Zhao, Jidong (Eds.) Bifurcation and Degradation of Geomaterials in the New Millennium
Peer reviewed
 

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Abstract :
[en] Galleries drilling leads to damage propagation, fracturing and properties modifications in the surrounding medium. The prediction of the damaged zone behaviour is an important matter and needs to be properly assessed. To do so the fractures can be modelled using shear strain localisation. The coupled local second gradient model is used under unsaturated conditions to correctly model the strain localisation behaviour. The permeability evolution and the rock desaturation due to air ventilation in galleries are considered. Finally, a hydro-mechanical modelling of a gallery excavation in Callovo-Oxfordian claystone is performed leading to a fairly good representation of the damaged zone.
Disciplines :
Civil engineering
Author, co-author :
Pardoen, Benoît ;  Université de Liège - ULiège > Département ArGEnCo > Géomécanique et géologie de l'ingénieur
Levasseur, Séverine ;  Université de Liège - ULiège > Département ArGEnCo > Géomécanique et géologie de l'ingénieur
Collin, Frédéric  ;  Université de Liège - ULiège > Département ArGEnCo > Géotechnique
Language :
English
Title :
Using shear strain localisation to model the fracturing around gallery in unsaturated Callovo-Oxfordian claystone
Publication date :
28 January 2015
Event name :
10th International Workshop on Bifurcation and Degradation in Geomaterials
Event organizer :
Hong Kong Polytechnic University
Event place :
Hong Kong, China
Event date :
from 28-05-2014 to 30-05-201
Audience :
International
Main work title :
Bifurcation and Degradation of Geomaterials in the New Millennium
Main work alternative title :
[en] Proceedings of the 10th International Workshop on Bifurcation and Degradation in Geomaterials
Editor :
Chau, Kam Tim
Zhao, Jidong
Publisher :
Springer
ISBN/EAN :
978-3-319-13505-2
Peer reviewed :
Peer reviewed
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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