S. Andrieux, Y. Bamberger, and J. J. Marigo, Un modèle de matériau microfissurê pour les béton et les roches, J. Mêc. théor. appi, vol.5, issue.3, pp.471-513, 1983.

Z. Bazant, F. B. Lin, and H. Lippmann, Fracture energy release and size effect in borehole breakout, International Journal for Numerical and Analytical Methods in Geomechanics, vol.116, issue.1, pp.1-14, 1993.
DOI : 10.1002/nag.1610170102

. T. Bieniawskiz, Mechanism of brittle fracture of rock, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.4, issue.4, pp.407-423, 1967.
DOI : 10.1016/0148-9062(67)90031-9

Z. T. Bieniawski, Mechanism of brittle fracture of rock, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.4, issue.4, pp.425-430, 1967.
DOI : 10.1016/0148-9062(67)90032-0

Z. T. Bieniawski, Stability concept of brittle fracture propagation in rock, Engineering Geology, vol.2, issue.3, pp.149-162, 1967.
DOI : 10.1016/0013-7952(67)90014-2

Z. T. Bieniawski, Brittle Fracture Propagation in Rock, Basic and Applied Rock Mechanics. Austin, pp.409-427, 1968.

S. K. Bordia, The effect of size and stress concentration on the dilatancy and fracture of rock, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.8, issue.6, pp.629-640, 1971.
DOI : 10.1016/0148-9062(71)90031-3

W. F. Brace, Brittle Failure of Rocks In State of Stress in the Earth's Crust, Proc. Int. Conf. Santa Monica, pp.111-178, 1964.

B. T. Brady, A mechanical equation of state for brittle rock part I???The pre-failure behavior of brittle rock, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.7, issue.4, pp.385-421, 1970.
DOI : 10.1016/0148-9062(70)90035-5

J. M. Bridell, Reducing frictional constraint in compression testing, 1991.

E. T. Brown, J. W. Bray, B. Ladanyi, and E. Hoek, Ground Response Curves for Rock Tunnels, Journal of Geotechnical Engineering, vol.109, issue.1, pp.15-39, 1983.
DOI : 10.1061/(ASCE)0733-9410(1983)109:1(15)

E. T. Brown, J. A. Hudson, M. R. Hardy, and C. Fairhurst, Controlled failure of hollow rock cylinders in uniaxial compression, Rock Mechanics Felsmechanik Mecanique des Roches, vol.7, issue.10, pp.1-24, 1972.
DOI : 10.1007/BF01239210

J. L. Chaboche, Continuum Damage Mechanics: Part I???General Concepts, Journal of Applied Mechanics, vol.55, issue.1, pp.59-64, 1988.
DOI : 10.1115/1.3173661

J. L. Chaboche, Continuum Damage Mechanics: Part II???Damage Growth, Crack Initiation, and Crack Growth, Journal of Applied Mechanics, vol.55, issue.1, pp.65-72, 1988.
DOI : 10.1115/1.3173662

C. Chow and T. J. Lu, A comparative study of continuum damage models for crack propagation under gross yielding, Int. Jour. Fract, vol.53, pp.43-75, 1992.

J. P. Cordebois and F. Sidoroff, Damage Induced Elastic Anisotropy, Euromech, vol.115, 1979.
DOI : 10.1007/978-94-009-6827-1_44

J. F. Cordebois and F. F. Sidoroff, Endommagement anisotrope en élasticité et plasticité, J. Méc. théor. appl, vol.spécial, pp.45-60, 1980.

. G. Cookn, The failure of rock, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.2, issue.4, pp.389-403, 1965.
DOI : 10.1016/0148-9062(65)90004-5

N. G. Cook, E. Hoek, J. P. Pretorius, W. D. Ortlepp, and M. D. Salomon, Rock Mechanics Applied to the Study of Rockbursts, pp.436-528, 1966.

S. L. Crouch and A. M. Starfield, Boundary Element Methods in Geomechanics

F. Darve, Rupture d'argiles naturelles par surfaces de cisaillement à l'essai triaxial, Rev. Franc. Géotec. Nu, vol.23, pp.27-38, 1983.

F. Darve, L'écriture incrémentale des lois rhéologiques et les grandes classes de lois de comportement, Manuel de rhéologie des géomatériaux, F. Darve Ed.. Presses des Ponts et Chaussées, pp.129-149, 1987.

F. Darve, Stability and uniqueness in geomaterials constitutive modelling In Localisation and Bifurcation Theory for Soils and Rock, pp.73-88, 1994.

J. Desrues, La localisation de la déformation dans les matériaux granulaires, Thèse de Doctorat, p.283, 1984.

T. Désoyer and F. Cormery, On uniqueness and localization in elastic-damage materials, International Journal of Solids and Structures, vol.31, issue.5, pp.733-744, 1994.
DOI : 10.1016/0020-7683(94)90149-X

T. Désoyer and S. Leroux, Etude de la localisation pour une loi de comportement élastiqueendommagéable avec gradients de déplacement d'ordre supérieur, C. R. Acad. Sei. Paris, Série H, pp.277-282, 1994.

!. Doghri, Etude de la localisation de l'endommagement. Thèse de Doctorat, p.152, 1989.

A. Dragon and Z. Mroz, A continuum model for plastic-brittle behavior of rock and concrete, Int. J. Engng. Sei.. Vol, vol.17, pp.122-137, 1978.

A. Dragon, F. Cormery, T. Désoyer, and D. Halm, Localised failure analysis using damage models, Localisation and Bifurcation Theory for Soils and Rock. Balkema, pp.127-139, 1994.

A. Drescher and I. Vardoulakis, Geometric softening in triaxial tests on granular material, G??otechnique, vol.32, issue.4, pp.291-303, 1982.
DOI : 10.1680/geot.1982.32.4.291

A. C. Eringen, Nonlinear Theory of Continuous Media, Journal of Applied Mechanics, vol.31, issue.2, 1962.
DOI : 10.1115/1.3629646

R. T. Ewy and N. G. Cook, Deformation and fracture around cylindrical openings in rock???I. Observations and analysis of deformations, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.27, issue.5
DOI : 10.1016/0148-9062(90)92713-O

R. T. Ewy, Deformation and fracture around cylindrical openings in rock???II. Initiation, growth and interaction of fractures, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.27, issue.5, pp.387-407, 1990.
DOI : 10.1016/0148-9062(90)92714-P

R. T. Ewy, Deformation and Fracture around Cylindrical Openings in Rock, p.219, 1989.

R. T. Ewy, J. M. Kemeny, Z. Zheng, and N. G. Cook, Generation and analysis of stable excavation shapes under high rock stresses, Proc. 6th Congress ISRM. Montréal, pp.875-881, 1987.

C. Fairhurst and N. G. Cook, The Phenomenon of Rock Splitting Parallel to the Direction of Maximum Compression in the Neighbourhood of a Surface, Proc. 1th Congress ISRM. Lisbon, pp.687-692, 1966.

L. Gambarotta and S. Lagomarsino, A microcrack damage model for brittle materials, International Journal of Solids and Structures, vol.30, issue.2, pp.177-198, 1993.
DOI : 10.1016/0020-7683(93)90059-G

J. Gramberg, A Non-Conventional View on Rock Mechanics and Fracture Mechanics, 1989.

G. Géomatériaux, . Actes-du-colloque-bilan, . Perspective, and . Greco-géomatériaux, Edité par F. Darve, Ministère de la Recherche et de la Technologie, CNRS, Ministère de l'Education Nationale, p.311, 1989.

G. R. Géomatériaux and . Scientifique, Ministère de la Recherche et de la Technologie, CNRS, Ministère de l'Education Nationale, Edité par J.M. Reynouard, p.801, 1992.

A. Guenot, Contraintes et ruptures autour des forages pétroliers, Proc. 6th Congr, pp.109-118, 1987.

A. Guenot, Borehole Breakouts and Stress Field, Int J. Rock Mech. Sei & Geomech. Abstr.. Vol, vol.264, issue.3, pp.185-195, 1989.

B. Halphen and J. Salençon, Elasto-plasticité, Presses des Ponts et Chaussées, p.448, 1987.

G. A. Hegemier and H. E. Read, On deformation and failure of brittle solids: Some outstanding issues, Mechanics of Materials, vol.4, issue.3-4, pp.215-259, 1985.
DOI : 10.1016/0167-6636(85)90022-5

E. Hoek, Brittle Failure of Rock. Imperial College, Rock Mechanics Research Report, p.pp, 1967.

H. Horii and S. Nemat-nasser, Compression-induced microcrack growth in brittle solids: Axial splitting and shear failure, Journal of Geophysical Research, vol.8, issue.B4, pp.4-3105, 1985.
DOI : 10.1029/JB090iB04p03105

G. R. Irwin, Analysis of Stresses and Strains Near the End of a Crack Traversing a Plate, J. Applied Mechanics, vol.24, pp.361-364, 1957.

T. Kawamoto, Y. Ichikawa, and T. Kyoya, Deformation and fracturing behaviour of discontinuous rock mass and damage mechanics theory, International Journal for Numerical and Analytical Methods in Geomechanics, vol.1, issue.1, pp.1-30, 1988.
DOI : 10.1002/nag.1610120102

L. M. Kachanov, Eléments de la théorie de la plasticité, Editions Mir, p.453, 1975.

L. M. Kachanov, Introduction to Continuum Damage Mechanics, p.135, 1986.
DOI : 10.1115/1.3173053

D. Krajcinovic and G. U. Fonseka, The Continuous Damage Theory of Brittle Materials, Part 1: General Theory, Journal of Applied Mechanics, vol.48, issue.4, pp.809-815, 1981.
DOI : 10.1115/1.3157739

D. Krajcinovic and G. U. Fonseka, The Continuous Damage Theory of Brittle Materials Part 2: Uniaxial and Plane Response Modes, ASCEJour. Appl. Mech, vol.48, pp.816-824, 1981.

D. Krajcinovic, Continuous Damage Mechanics Revisited: Basic Concepts and Definitions, Journal of Applied Mechanics, vol.52, issue.4, pp.829-834, 1985.
DOI : 10.1115/1.3169154

S. Kyriakides, Propagating instabilities in structures, Theoretical and Applied Mechanics 1992, pp.79-80, 1993.

J. F. Labuz and J. M. Bridell, Reducing frictional constraint in compression testing through lubrication, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.30, issue.4, pp.451-455, 1993.
DOI : 10.1016/0148-9062(93)91726-Y

S. G. Lekhnitskii, Theory of Elasticity of an Anisotropic Body, 1981.

J. Lemaitre, A Course on Damage Mechanics, p.210, 1992.

J. Lemaitre and J. L. Chaboche, Mécanique des matériaux solides, p.544, 1988.

S. Maloney and P. K. Kaiser, Results of borehole breakout simulation tests. Rock at Great Depth, pp.745-751, 1989.

C. Martinet, Grès et mortiers du temple d'Amon. Laboratoire Central des Ponts et Chaussées, p.187, 1992.

G. A. Maugin, The Thermomechanics of Plasticity and Fracture, p.350, 1992.
DOI : 10.1017/CBO9781139172400

V. Maury, Observations, recherches et résultats récentes sur les mécanismes de rupture autour des galeries isolées Rapport de la Commission ISRM "Mécanismes de rupture, Proc. 6th Congr, pp.109-118, 1987.

J. Mazars, Application de la mécanique de l'endommagement au comportement non Uneaire et à la rupture du béton de structure, Thèse de Doctorat d'Etat, 1984.

F. A. Mcclintock and J. B. Walsh, Friction on Griffith cracks in rocks under pressure, U.S. Nati. Congr. Appl. Mech, pp.1015-1021, 1962.

S. Murakami and N. Ohno, A Continuum Theory of Creep and Creep Damage, Proc. 3rd IU- TAM Symp. on Creep Structures, pp.422-443, 1980.
DOI : 10.1007/978-3-642-81598-0_28

S. Nemat-nasser and H. Horii, Elastic Solids with Microdefects, pp.297-320, 1990.
DOI : 10.1007/978-1-4613-8919-4_20

R. Nova, Loss of Uniqueness of Elastoplastic Strainhardening Constitutive Laws for Geomaterials, Strain Localisation and Failure in Geomaterials, 1992.

L. Obert and D. E. Stephenson, Stress Condition under which Core Discing occurs, Soc. Min. Eng. Transactions, pp.227-234, 1965.

A. Ord, I. Vardoulakis, and R. Kajewski, Shear band formation in Gosford Sandstone, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.28, issue.5, pp.5-397, 1991.
DOI : 10.1016/0148-9062(91)90078-Z

M. Panet, Quelques problèmes de mécanique des roches posés par le tunnel du Mont Blanc, Bul. Liaison Lobo. Routiers P. et Ch " n, vol.42, pp.115-145, 1969.

E. Papamichos, J. F. Labuz, and L. Vardoulakis, A surface instability detection apparatus, Rock Mechanics and Rock Engineering, vol.94, issue.B11, pp.37-56, 1994.
DOI : 10.1007/BF01025955

P. C. Papanastasiou, Numerical analysis of localisation phenomena with application in deep boreholes, 1990.

M. S. Paterson, Experimental Rock Deformation -The Brittle Field, 1978.
DOI : 10.1007/978-3-662-11720-0

A. Peilegrino, J. Sulem, and G. Baria, Nonlinear effects in the study of borehole stability. Eurock '94, pp.231-238, 1994.

P. Cabot, G. , L. Borderie, C. Fichant, and S. , Damage Mechanics for Concrete Modelling: Applications and Comparison with Plasticity and Fracture Mechanics, Euro- C1994, Proc. Int. Conf.. Innsbruck, pp.17-36, 1994.

R. A. Plumb, Fracture patterns associated with incipient wellbore breakouts. Rock at Great Depth, pp.761-768, 1989.

R. V. Proctor and T. L. White, Rock Tunnelling with Steel Supports. The Commercial Shearing & Stamping Co, p.282, 1946.

S. Ramtani, Contribution à la modélisation du comportement multiaxial du béton endommagé avec description du caractère unilatéral, p.227, 1990.

R. Ribacchi and R. Riccioni, Stato di sforzo e deformazione intomo ad una gallería circolare, Gallerte, vol.5, pp.7-20, 1977.

J. W. Rudnicki and J. R. Rice, Conditions for the localization of deformation in pressure-sensitive dilatant materials, Journal of the Mechanics and Physics of Solids, vol.23, issue.6, pp.371-394, 1975.
DOI : 10.1016/0022-5096(75)90001-0

F. J. Santarelli, Theoretical and experimental investigation of the stability of the axysimmetric wellbore, p.472, 1987.

F. J. Santarelli and E. T. Brown, Failure of three sedimentary rocks in triaxial and hollow cylinder compression tests, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.26, issue.5, pp.401-413, 1989.
DOI : 10.1016/0148-9062(89)90936-4

F. J. Santarelli, Quelques réflexions sur les biais d'observation lors des essais sur les modèles réduit de forage, Rev. Franc. Géotech. n, vol.59, pp.33-41, 1992.

U. K. Singh and P. J. Digby, A continuum damage model for simulation of the progressive failure of brittle rocks, International Journal of Solids and Structures, vol.25, issue.6, pp.647-663, 1989.
DOI : 10.1016/0020-7683(89)90031-0

. J. Sluysl, Wave propagation, localisation and dispersion in softening solids, p.173, 1993.

T. R. Stacey, D. Jongh, and C. L. , Stress fracturing around a deep-level bored tunnel, J. S. Afr. Inst. Min. Met, vol.78, issue.5, pp.124-133, 1977.

J. Sulem and I. Vardoulakis, Bifurcation analysis of the triaxial test on rock specimens. A theoretical model for shape and size effect, Acta Mechanica, vol.8, issue.3-4, pp.195-212, 1990.
DOI : 10.1007/BF01172981

I. Vardoulakis and E. Papamichos, Surface instabilities in elastic anisotropic media with surface-parallel griffith cracks, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.28, issue.2-3, pp.163-173, 1991.
DOI : 10.1016/0148-9062(91)92164-T

I. Vardoulakis, J. Sulem, and A. Guenot, Borehole instabilities as bifurcation phenomena, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.25, issue.3, pp.159-170, 1988.
DOI : 10.1016/0148-9062(88)92298-X

I. Vardoulakis and J. Sulem, Application of Bifurcation Theory to Rock Mechanics Problems, 1993.

Z. Wohua and S. Valliappan, Analysis of random anisotropic damage mechanics problems of rock mass, Rock Mechanics and Rock Engineering, vol.52, issue.2, pp.91-112
DOI : 10.1007/BF01020395

W. R. Wawersik and C. Fairhurst, A study of brittle rock fracture in laboratory compression experiments, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol.7, issue.5, pp.561-575, 1970.
DOI : 10.1016/0148-9062(70)90007-0