Construction of dams, tunnels and slopes in jointed, water-bearing rock causes complex interactions between joint deformation and effective stress. Joint deformation can take the form of normal closure, opening, shear and dilation. The resulting changes of aperture can cause as much as three orders of magnitude change in conductivity at moderate compressive stress levels. Even the heavily stressed joints found in oil and gas reservoirs may also exhibit significant stress-dependent conductivity during depletion, and during waterflood treatments. The magnitudes of the above processes are often strongly dependent on both the character and frequency of jointing. In this paper the results of many years of research on joint properties are synthesized in a coupled joint behaviour model. Methods of joint characterization are described for obtaining the necessary input data. The model simulates stress-and size-dependent coupling of shear stress, displacement, dilation and conductivity, and of normal stress, closure and conductivity. These processes are the fundamental building blocks of rock mass behaviour. Model simulations are compared with experimental behaviour and numerous examples are given. (Author/TRRL)

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  • Corporate Authors:

    Pergamon Press, Incorporated

    Headington Hill Hall
    Oxford OX30BW,    
  • Authors:
    • Barton, N
    • Bandis, S
    • Bakhtar, K
  • Publication Date: 1985-6

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Filing Info

  • Accession Number: 00450885
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Aug 27 2004 9:57PM