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Yield of large rock fragments versus specific explosive consumption in blasting

  • Rock Breaking
  • Published:
Soviet Mining Aims and scope

Conclusions

  1. 1.

    It is shown that a hyperbolic relation between the yield of oversize pieces and the specific explosive consumption, VH=VH(q), fails over a wide range of consumptions to correspond with data on the structure of fissured virign rocks, and dos not agree with the practice of blasting in quarries.

  2. 2.

    Starting from A. F. Belyaev’s postulate on the fragmentation of large volumes of rock, a theoretical relation is derived for VH in tems of q, which is plotted as a straight line. The accuracy of this law is confirmed experimentally for the conditions of quarries; it gives a sound basis for calculations of the parameters of blasting work for a given fragmentation.

  3. 3.

    The principle of uniform distribution of explosive in the virgin rock is formulated.

  4. 4.

    In studying the relation VH=VH(q) and other topics, in rock blasting, underground work must be treated separately from open-cutwork.

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Authors
  1. V. K. Rubtsov
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Additional information

TsNIGRI, Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 53–59, January–February, 1967.

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Rubtsov, V.K. Yield of large rock fragments versus specific explosive consumption in blasting. Soviet Mining Science 3, 40–44 (1967). https://doi.org/10.1007/BF02497065

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  • DOI: https://doi.org/10.1007/BF02497065

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