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Combined estimate of the mechanical properties of a rock mass at great depth at the deposit-surveying stage

  • Mechanics of Rocks and Rock Pressure
  • Published:
Soviet mining science Aims and scope

Conclusions

  1. 1.

    At the surveying stage for deep deposits, in conjunction with the drilling of exploratory wells, it is possible to obtain reliable data for calculating the coefficient of structural weakening.

  2. 2.

    Seismoacoustic well-logging and fractionation (break-up) of the core provides a complete picture of the state of the rock mass near the exploratory well. Based on the travel-time curve for longitudinal elastic wave velocity, the fractured (karst) zones can be determined with the necessary accuracy, as well as the acoustic coefficient of weakening in the rock mass due to the scale factor A⋆ = λsf, the acoustic fracturing coefficient Ai, or the coefficient η1, based on which the intensity of fracturing, the size of the structural block, the coefficient of structural weakening λ, and the modulus of elasticity E can be determined in the rock mass.

  3. 3.

    The method proposed permits the coefficient of structural weakening and modulus of elasticity to be most operatively determined, the values for which can be used at the planning stage for mining operations.

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Literature Cited

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Authors and Affiliations

  1. Scientific-Research Institute for Mineral Resources, Sofia, Bulgaria

    G. D. Manev

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  1. G. D. Manev
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 28–35, January–February–February, 1983

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Manev, G.D. Combined estimate of the mechanical properties of a rock mass at great depth at the deposit-surveying stage. Soviet Mining Science 19, 24–31 (1983). https://doi.org/10.1007/BF02497960

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  • DOI: https://doi.org/10.1007/BF02497960

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