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Soviet Mining

, Volume 22, Issue 4, pp 267–270 | Cite as

Modeling the dispersion of size reduction of rock during blast-induced failure of a rock mass surrounding an excavation

  • A. D. Borulev
  • V. K. Makeev
  • V. S. Krutsan
Rock Breaking
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Conclusions

  1. 1.

    The failure of the rock mass surrounding an excavation subjected to the detonation of powerful charges on its surface or in a neighboring outcrop is characterized by the formation of three zones in which the size reduction of the rock occurs: zone I-epicentral; zone II-frontal zone near the perimeter; and zone III-rear zone near the perimeter.

     
  2. 2.

    The dispersion of the size reduction of rock is virtually the same in the different zones, if there is no noticeable damping of the intensity of the blast waves in the mass.

     
  3. 3.

    The dispersion of the size reduction of rock in the failure zones depends heavily on the intensity of the dynamic load and the strength characteristics of the rock.

     

Keywords

Rock Mass Excavation Size Reduction Blast Wave Failure Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature Cited

  1. 1.
    V. M. Komir et al., Modeling the Failing Action of a Blast in Rock [in Russian], Nauka, Moscow (1973).Google Scholar
  2. 2.
    Yu. V. Sushkov, N. A. Yakovlov, and A. D. Borulev, “Evaluation of the dispersion of rock size reduction in the failure zone of rock excavations subjected to blasting,” Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., No. 4 (1985).Google Scholar
  3. 3.
    N. A. Yakovlev, A. D. Borulev, and D. V. Kostsov, “Predicting possible failures of rock excavations subjected to blasting,” in: Mechanics of Underground Structures [in Russian], Izd. Tulin. Politekh. Inst. Tula (1984).Google Scholar

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • A. D. Borulev
  • V. K. Makeev
  • V. S. Krutsan

There are no affiliations available

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