Mechanics and fluid transport in a degradable discontinuity

This paper briefly examines the mechanical and hydraulic response of discontinuity in a geologic medium that can experience degradation of its contacting regions due to shear and normal stresses acting on it. The paper discusses the methodologies that can be adopted to describe the mechanics and fluid transport behaviour of such a joint. The calibration capabilities of the model are illustrated by appeal to a comparison of experimental results with computational predictions.

[1]  N. Barton,et al.  The shear strength of rock joints in theory and practice , 1977 .

[2]  N. Barton,et al.  Strength, deformation and conductivity coupling of rock joints , 1985 .

[3]  M. Biot General Theory of Three‐Dimensional Consolidation , 1941 .

[4]  A.P.S. Selvadurai,et al.  Computational modelling of isothermal consolidation of fractured porous media , 1995 .

[5]  Charles H. Dowding,et al.  JOINT ASPERITY DEGRADATION DURING CYCLIC SHEAR , 1990 .

[6]  Michael E. Plesha,et al.  Constitutive models for rock discontinuities with dilatancy and surface degradation , 1987 .

[7]  A.P.S. Selvadurai,et al.  A model for coupled mechanical and hydraulic behaviour of a rock joint , 1998 .

[8]  Michael E. Plesha,et al.  An investigation of the mechanics of rock joints—Part II. Analytical investigation , 1993 .

[9]  Nick Barton,et al.  Joint conductivity variation due to normal and shear deformation , 1991 .

[10]  Richard E. Goodman,et al.  Duplication of Dilatancy in Analysis of Jointed Rocks , 1972 .

[11]  P. A. Witherspoon,et al.  OBSERVATIONS OF A POTENTIAL SIZE-EFFECT IN EXPERIMENTAL DETERMINATION OF THE HYDRAULIC PROPERTIES OF FRACTURES - eScholarship , 1979 .

[12]  G. Vik,et al.  Predicted and measured hydraulic conductivity of rock joints , 1986 .

[13]  J. Gale,et al.  Assessing the Permeability Characteristics of Fractured Rock , 1982 .

[14]  T. N. Narasimhan,et al.  Recent trends in hydrogeology , 1982 .

[15]  F. Patton Multiple Modes of Shear Failure In Rock , 1966 .

[16]  Marc Boulon,et al.  Influence of rock joint degradation on hydraulic conductivity , 1993 .

[17]  Nick Barton,et al.  Experimental studies of scale effects on the shear behaviour of rock joints , 1981 .

[18]  A. Selvadurai,et al.  Mechanics of Poroelastic Media , 1996 .