A double rock sample model for rockbursts

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Abstract

In this paper, a double rock sample model for studying the rockburst mechanism is presented. Based on the assumption that there exists a proportional relation between the number of microseismic events and microfractured elements, the theoretical microseismic event rate produced by the double rock sample loaded in series under uniaxial compression is obtained. By using a newly developed numerical code, RFPA2D, the progressive failure process and associated microseismic behavior of the twin rock samples are simulated, which shows that the spatial distribution of microseismic events develops progressively from disorder at the initial loading stage to order prior to the main shock. A laboratory experiment with the same setup as the double rock sample model is conducted in order to verify the theoretical results.

References (18)

  • H. Xie et al.

    Fractal character and mechanism of rock bursts

    Int. J. Rock Mech. Min. Sci. & Geomech. Abstr.

    (1993)
  • D. Lockner

    The role of acoustic emission in the study of rock fracture

    Int. J. Rock Mech. Min. Sci. & Geomech. Abstr.

    (1993)
  • M.D.G. Salamon

    Some application of geomechanical modelling in rockburst and related research

  • D.E. Gill et al.

    A Practical Engineering Approach to the Evaluation of Rockburst Potential

  • C. Tang et al.

    Rock Failure Instability and Related Aspects of Earthquake Mechanisms

    (1993)
  • C.A. Tang et al.

    Evolution and propagation of material defects and Kaiser effect function

    J. Seismological Res.

    (1990)
  • C.A. Tang et al.

    Patterns of Rockbursts Seismicity and Their Relation to Heterogeneity of Rock Materials

  • J.A. Hudson et al.

    Tensile strength, Weibull's theory and a general statistical approach to rock failure

  • D. Krajicinovic et al.

    Statistical aspects of the continuous damage theory

    Int. J. Solids Structures

    (1982)
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