NUMERICAL STUDY ON CONFINING PRESSURE EFFECT IN THE PROCESS OF ROCK FAILURE

  • D.P. Qiao
  • Y.N. Sun
  • S. H. Wang
  • C.A. Tang
Conference paper

Abstract

The deformation mechanism of rock under different constant confining pressure was briefly analysed based on continuum damage mechanics and the effects of confining pressure on deformation, strength and macroscopic fracture patterns of model rock specimens are also studied using the Rock Failure Process Analysis (RFPA2 D) code. The theoretical analysis and numerically obtained results duplicate the deformation, strength (such as Young’s modulus, compressive strength, etc.) and macroscopic fracture patterns observed in laboratory. The theoretical studies and numerical simulations are extremely instructive and indicative for investigating some catastrophic hazard phenomena such as rock bursts and instability induced by excavation.

Keywords

Brittle Ductility Excavation Geophysics Meso 

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REFERENCES

  1. 1.
    T.N. Gowd and F. Rummel (1980), Effect of confining pressure on the fracture behavior of a porous rock. International Journal of Rock Mechanics, Mining Sciences and Geomechanical Abstracts, 17, pp. 225–229.CrossRefGoogle Scholar
  2. 2.
    M.F. Ashby and C.G. Sammis (1990), The damage mechanics of brittle solids in compression. Pure and Applied Geophysics, 133, pp. 489–521.CrossRefGoogle Scholar
  3. 3.
    C.A. Tang (1997), Numerical simulation of progressive rock failure and associated seismicity. International Journal of Rock Mechanics and Mining Science, 34, 2, pp. 249–261.CrossRefGoogle Scholar
  4. 4.
    C.A. Tang, L.G. Tham, P.K.K. Lee, et al. (2000), Numerical studies of the influence of microstructure on rock failure in uniaxial compression—Part II: Constraint, slenderness and size effect. International Journal of Rock Mechanics and Mining Science, 37, 4, pp. 571–583.CrossRefGoogle Scholar
  5. 5.
    M.F. Ashby and C.G. Sammis (1990), The damage mechanics of brittle solids in compression. Pure and Applied Geophysics, 133, pp. 489–521.CrossRefGoogle Scholar
  6. 6.
    M.Q. You and A.Z. Hua (1998), Fracture of rock specimen and decrement of bearing capacity in uniaxial compression. Chinese Journal of Rock Mechanics and Engineering, 17, 1, pp. 24–29.Google Scholar
  7. 7.
    X.R. Ge, J.X. Ren, Y.B. Pu, et al. (1999), A real-in-time cttriaxial testing study of meso-damage evolution law of coal. Journal of Applied Mechanics, 18, 5, pp. 497–502.Google Scholar

Copyright information

© Springer 2006

Authors and Affiliations

  • D.P. Qiao
    • 1
  • Y.N. Sun
    • 1
  • S. H. Wang
    • 2
  • C.A. Tang
    • 2
  1. 1.Faculty of Land Resources EngineeringKunming University of Science and TechnologyKunmingP. R. China
  2. 2.School of Resource and Civil EngineeringNortheastern UniversityShenyangP. R. China

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