COx claystone; Hydro-mechanical coupling; Interface elements; Numerical modeling; Self-sealing; Geotechnical Engineering and Engineering Geology; Earth and Planetary Sciences (miscellaneous)
Abstract :
[en] The fractures network generated during the excavation of underground research facilities can induce stress redistribution and alteration of flow and transport properties, becoming preferential paths for releasing radionuclides into the host rock. Nevertheless, in the long term, the fracture can be sealed through the resaturation of water coming from the rock as a function of its self-sealing potential. Despite the large number of experimental studies that have proven the self-sealing capacity of clay rocks, very few attempts have been made to describe and predict the phenomenon numerically. This may be due to the difficulty of measuring the initial hydro-mechanical conditions. Besides, samples artificially fractured in the laboratory can be disturbed by the preparation process itself, which can alter the hydro-mechanical state. This paper addresses that issue by bridging the gap between experiments and numerical modeling. Representative experimental tests performed on Callovo–Oxfordian Claystone (COx) are used to offer a hydro-mechanical fracture law taking into account the self-sealing capacity of the material. Implementing such a model in a finite element code allows its validation through comparison with laboratory tests. Furthermore, the role of the initial fracture size and the evolution of water permeability during the wetting/drying process is investigated. Due to its transmissivity, injected water can penetrate the rock, initially reaching the damaged zone around the fracture before spreading through the entire sample. This progression is accounted in the constitutive equation and represented numerically. Nevertheless, a larger initial crack leads to reduced recovery rates. These results match the experiments, offering a valuable perspective in the modeling of self-sealing in in situ conditions.
Disciplines :
Civil engineering
Author, co-author :
Quacquarelli, Adriana ✱; Urban and Environmental Engineering Research Unit, University of Liège, Liège, Belgium
Talandier, Jean; R & amp,D Division, Andra, Chatenay-Malabry, France
Di Donna, Alice; Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR, Grenoble, France
Collin, Frédéric ✱; Université de Liège - ULiège > Département ArGEnCo
✱ These authors have contributed equally to this work.
Language :
English
Title :
Numerical modeling of self-sealing in fractured clayey materials
Publication date :
2024
Journal title :
Acta Geotechnica
ISSN :
1861-1125
eISSN :
1861-1133
Publisher :
Springer Science and Business Media Deutschland GmbH
This research was supported by the University of Liège under Special Funds for Research, IPD-STEMA Program. This work was also carried out in the framework of the EURAD, European Joint Program on Radioactive Waste Management (under Grant agreement No 847593), to which the authors are grateful.
G. Armand N. Conil J. Talandier D.M. Seyedi Fundamental aspects of the hydromechanical behaviour of Callovo–Oxfordian claystone: from experimental studies to model calibration and validation Comput Geotech 2017 85 277 286 10.1016/j.compgeo.2016.06.003
G. Armand F. Leveau C. Nussbaum R. de La Vaissière A. Noiret D. Jaeggi P. Landrein C. Righini-Waz Geometry and properties of the excavation-induced fractures at the Meuse/haute-Marne URL drifts Rock Mech Rock Eng 2013 10.1007/s00603-012-0339-6
S. Bandis A. Lumsden N. Barton Fundamentals of rock joint deformation Int J Rock Mech Min Sci Geomech Abstr 1983 10.1016/0148-9062(83)90595-8
M. Bart J. Shao D. Lydzba M. Haji-Sotoudeh Coupled hydromechanical modeling of rock fractures under normal stress Can Geotech J 2004 41 686 697 10.1139/t04-018
Bernier F, Li XL, Bastiaens W, Ortiz L, Van Geet M, Wouters L (2007) SELFRAC: fractures and self-healing within the excavation disturbed zone in clays. Final report. EURIDICE Rep
Bock H, Dehandschutter B, Martin CD, Mazurek M, de Haller A, Skoczylas F, Davy C (2010) Self-sealing of Fractures in Argillaceous Formations in the Context of Geological Disposal of Radioactive Waste. NEA
B. Cerfontaine A.-C. Dieudonné J.-P. Radu F. Collin R. Charlier 3D zero-thickness coupled interface finite element: formulation and application Comput Geotech 2015 69 124 140 10.1016/j.compgeo.2015.04.016
Charlier R (1987) Approche unifiée de quelques problèmes non linéaires de mécanique des milieux continus par la méthode des éléments finis: (grandes déformations des métaux et des sols, contact unilatéral de solides, conduction thermique et écoulements en milieu poreux)
Charlier R, Cescotto S (1988) Modélisation du phénomène de contact unilatéral avec frottement dans un contexte de grandes déformations. J Mécanique Théorique Appliquée 7
R. Charlier F. Collin B. Pardoen J. Talandier J.-P. Radu P. Gerard An unsaturated hydro-mechanical modelling of two in-situ experiments in Callovo–Oxfordian argillite Eng Geol 2013 165 46 63 10.1016/j.enggeo.2013.05.021
Collin F (2003) Couplages thermo-hydro-mécaniques dans les sols et les roches tendres partiellement saturés
N. Conil J. Talandier H. Djizanne R. de La Vaissière C. Righini-Waz C. Auvray C. Morlot G. Armand How rock samples can be representative of in situ condition: a case study of Callovo–Oxfordian claystones J Rock Mech Geotech Eng 2018 10 613 623 10.1016/j.jrmge.2018.02.004
C.A. Davy F. Skoczylas J.-D. Barnichon P. Lebon Permeability of macro-cracked argillite under confinement: gas and water testing Phys Chem Earth Parts ABC 2007 32 667 680 10.1016/j.pce.2006.02.055
R. Day D. Potts Zero thickness interface elements—numerical stability and application Int J Numer Anal Methods Geomech 1994 18 689 708 10.1002/nag.1610181003
P.-G. De Gennes F. Brochard-Wyart D. Quéré Capillarity and Wetting Phenomena 2004 New York Springer 10.1007/978-0-387-21656-0
Di Donna A, Charrier P, Salager S, Bésuelle P (2019) Self-sealing capacity of argillite samples. In: 7th International Symposium on Deformation Characteristics of Geomaterials https://doi.org/10.1051/e3sconf/20199203005
A. Di Donna P. Charrier J. Dijkstra E. Andò P. Bésuelle The contribution of swelling to self-sealing of claystone studied through x-ray tomography Phys Chem Earth 2022 10.1016/j.pce.2022.103191
K.A. Fischer P. Wriggers Mortar based frictional contact formulation for higher order interpolations using the moving friction cone Comput Methods Appl Mech Eng 2006 195 5020 5036 2240590 10.1016/j.cma.2005.09.025
A. Gens I. Carol E. Alonso A constitutive model for rock joints formulation and numerical implementation Comput Geotech 1990 9 3 20 10.1016/0266-352X(90)90026-R
Gentier S, Petitjean C, Riss J, Archambault G (1996) Hydromechanical behavior of a natural joint under shearing. In: ARMA North America Rock Mechanics Symposium. ARMA, p ARMA-96
R. Giot C. Auvray J. Talandier Self-sealing of claystone under X-ray nanotomography Geol Soc Lond Spec Publ 2019 482 213 223 10.1144/sp482.4
R.E. Goodman R.L. Taylor T.L. Brekke A model for the mechanics of jointed rock J Soil Mech Found Div 1968 94 637 659 10.1061/JSFEAQ.0001133
C. Guiducci F. Collin J.-P. Radu A. Pellegrino R. Charlier Numerical modeling of hydro-mechanical fracture behavior ISRM Congress 2003 10.1201/9781439833797-c43
A. Habraken S. Cescotto Contact between deformable solids: the fully coupled approach Math Comput Model 1998 28 153 169 10.1016/S0895-7177(98)00115-0
S.C.Y. Ip J. Choo R.I. Borja Impacts of saturation-dependent anisotropy on the shrinkage behavior of clay rocks Acta Geotech 2021 16 3381 3400 10.1007/s11440-021-01268-9
S.P. Jia L.W. Zhang B.S. Wu H.D. Yu J.X. Shu A coupled hydro-mechanical creep damage model for clayey rock and its application to nuclear waste repository Tunn Undergr Space Technol 2018 74 230 246 10.1016/j.tust.2018.01.026
R. de La Vaissière G. Armand J. Talandier Excavation damaged zone under imbibition: evidence of self-sealing into claystone Unsaturated Soils Res Appl 2014 10.1201/b17034-216
R. de La Vaissière G. Armand J. Talandier Gas and water flow in an excavation-induced fracture network around an underground drift: a case study for a radioactive waste repository in clay rock J Hydrol 2015 521 141 156 10.1016/j.jhydrol.2014.11.067
S. Levasseur F. Collin K. Daniels M. Dymitrowska J. Harrington E. Jacops O. Kolditz P. Marschall S. Norris X. Sillen et al. Initial state of the art on gas transport in clayey materials Deliv 2021 D6 1
Z. Liu J. Shao S. Xie N. Conil W. Zha Effects of relative humidity and mineral compositions on creep deformation and failure of a claystone under compression Int J Rock Mech Min Sci 2018 103 68 76 10.1016/j.ijrmms.2018.01.015
M. Nuth L. Laloui Effective stress concept in unsaturated soils: Clarification and validation of a unified framework Int J Numer Anal Methods Geomech 2008 32 771 801 10.1002/nag.645
R. Olsson N. Barton An improved model for hydromechanical coupling during shearing of rock joints Int J Rock Mech Min Sci 2001 38 317 329 10.1016/S1365-1609(00)00079-4
A.P. Oron B. Berkowitz Flow in rock fractures: the local cubic law assumption reexamined Water Resour Res 1998 34 2811 2825 10.1029/98WR02285
M.E. Plesha Rock joints: theory, constitutive equations Studies in applied mechanics 1995 Amsterdam Elsevier 375 393 10.1016/S0922-5382(06)80018-8
M.A. Puso T.A. Laursen A mortar segment-to-segment contact method for large deformation solid mechanics Comput Methods Appl Mech Eng 2004 193 601 629 10.1016/j.cma.2003.10.010
Roscoe K, Burland JB (1968) On the generalized stress-strain behaviour of wet clay
F. Salehnia X. Sillen X. Li R. Charlier Numerical simulation of a discontinuous gallery lining’s behavior, and its interaction with rock Int J Numer Anal Methods Geomech 2017 41 1569 1589 10.1002/nag.2689
E. Stavropoulou E. Andò A. Tengattini M. Briffaut F. Dufour D. Atkins G. Armand Liquid water uptake in unconfined Callovo Oxfordian clay-rock studied with neutron and X-ray imaging Acta Geotech 2019 14 19 33 10.1007/s11440-018-0639-4
Y. Sun B. Pardoen B. Van Den Eijnden H. Wong Modelling the time-dependent mechanical behaviour of clay rocks based on meso- and micro-structural viscous properties Int J Numer Anal Methods Geomech 2023 47 3177 3208 10.1002/nag.3617
C.-F. Tsang F. Bernier C. Davies Geohydromechanical processes in the excavation damaged zone in crystalline rock, rock salt, and indurated and plastic clays—in the context of radioactive waste disposal Int J Rock Mech Min Sci 2005 42 109 125 10.1016/j.ijrmms.2004.08.003
Y.W. Tsang P. Witherspoon Hydromechanical behavior of a deformable rock fracture subject to normal stress J Geophys Res Solid Earth 1981 86 9287 9298 10.1029/JB086iB10p09287
M.T. Van Genuchten A closed-form equation for predicting the hydraulic conductivity of unsaturated soils Soil Sci Soc Am J 1980 44 892 898 10.2136/sssaj1980.03615995004400050002x
C. Wang J. Talandier F. Skoczylas Swelling and fluid transport of re-sealed Callovo–Oxfordian claystone Rock Mech Rock Eng 2022 10.1007/s00603-021-02708-4
H. Wang Y.-J. Cui M.N. Vu J. Talandier N. Conil Fracture effect on the hydro-mechanical behaviour of Callovo–Oxfordian claystone Eng Geol 2022 303 106674 10.1016/j.enggeo.2022.106674
H. Wang R. de La Vaissière M.-N. Vu C. La Borderie D. Gallipoli Numerical modelling and in-situ experiment for self-sealing of the induced fracture network of drift into the Callovo–Oxfordian claystone during a hydration process Comput Geotech 2022 141 104487 10.1016/j.compgeo.2021.104487
B. Yven S. Sammartino Y. Geraud F. Homand F. Villieras Mineralogy, texture and porosity of Callovo–Oxfordian argillites of the Meuse/Haute-Marne region (Eastern Paris Basin) Mém Société Géologique Fr 2007 178 73 90
C.-L. Zhang Sealing of fractures in claystone J Rock Mech Geotech Eng 2013 5 214 220 10.1016/j.jrmge.2013.04.001
C.-L. Zhang G. Armand N. Conil B. Laurich Investigation on anisotropy of mechanical properties of Callovo–Oxfordian claystone Eng Geol 2019 251 128 145 10.1016/j.enggeo.2019.02.008
C.-L. Zhang J. Talandier Self-sealing of fractures in indurated claystones measured by water and gas flow J Rock Mech Geotech Eng 2023 15 227 238 10.1016/j.jrmge.2022.01.014
