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Crack dynamics and electromagnetic emission by loaded rock masses

  • Rock Mechanics and Mine Pressure
  • Published:
Soviet Mining Aims and scope

Conclusions

  1. 1.

    The shape of EMP signals recorded during destruction of massive rocks and AHC is due to growth of the crack dipole moment during change propagation and relaxation on its edges after cessation (“pop in”).

  2. 2.

    During processing of the pulse oscillograms it must be taken into account that in the overwhelming majority of cases the crack radiation under laboratory conditions is recorded in the near rather than the wave zone, i.e., at distances satisfying the field quasistationarity condition.

  3. 3.

    The model proposed for EMP generation can be utilized for a theoretical description of the electromagnetic emission from the focus of massive rock destruction as well as for processing and interpretation of laboratory and mine observations.

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Literature Cited

  1. Yu. I. Golovin and A. A. Shibkov, “Rapidly proceeding processes and dynamics of dislocations in plastically deformable alkali-halide crystals,” Fiz. Tverd. Tela,28, No. 11 (1987).

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Authors
  1. V. V. Ivanov
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  2. P. V. Egorov
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  3. L. A. Kolpakova
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  4. A. G. Pimonov
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Additional information

KuzPI, Kemerovo. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 20–27, September–October, 1988.

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Ivanov, V.V., Egorov, P.V., Kolpakova, L.A. et al. Crack dynamics and electromagnetic emission by loaded rock masses. Soviet Mining Science 24, 406–412 (1988). https://doi.org/10.1007/BF02498591

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  • DOI: https://doi.org/10.1007/BF02498591

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