Application of electro-discharge blasting technology for destruction of oversized rocks and rock massive splitting off

N. V. Voitenko, A. S. Yudin, N. S. Kuznetsova

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The investigation of possibilities of the plasma blasting technology is considered. The method is based on the initiation of a pulsed electric discharge inside the solid dielectric material. The expanding plasma channel generates a shock wave which in the vicinity of the channel (1-2 mm) transforms into the elastic wave with an expressed region of tensile tangential stresses that in turn stimulate the radial crack nucleation. The efficiency of solid destruction at shock-wave action strongly depends on the pulse parameters. The high-current pulse must fulfil the requirements to such parameters: the high-rate of rising edge (0.1-10 μs) and pulse duration (≥ 200-300 μs). The experimental results have shown that the optimal ratio of the borehole depth is 0.6-0.7 from the oversize rock height. For splitting rock massive off the borehole depth should be at least 2 and not more than 5 electro-explosive cartridge lengths and distance between the boreholes should be equal to 1-2 of the boreholes depths. On the basis of the experimental results the recommendations for the electro-discharge destruction and splitting off oversized rocks are presented.

Original languageEnglish
Title of host publicationAdvanced Materials for Technical and Medical Purpose
PublisherTrans Tech Publications Ltd
Pages15-19
Number of pages5
Volume712
ISBN (Print)9783035710649
DOIs
Publication statusPublished - 2016
EventWorkshop on Advanced Materials for Technical and Medical Purpose, AMTMP-2016 - Tomsk, Russian Federation
Duration: 15 Feb 201617 Feb 2016

Publication series

NameKey Engineering Materials
Volume712
ISSN (Print)1013-9826

Conference

ConferenceWorkshop on Advanced Materials for Technical and Medical Purpose, AMTMP-2016
CountryRussian Federation
CityTomsk
Period15.2.1617.2.16

Fingerprint

Blasting
Boreholes
Rocks
Shock waves
Plasmas
Electric discharges
Elastic waves
Tensile stress
Nucleation
Cracks

Keywords

  • Destruction of rock
  • Electro-discharge blasting
  • High-current pulse generator
  • Plasma channel

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Voitenko, N. V., Yudin, A. S., & Kuznetsova, N. S. (2016). Application of electro-discharge blasting technology for destruction of oversized rocks and rock massive splitting off. In Advanced Materials for Technical and Medical Purpose (Vol. 712, pp. 15-19). (Key Engineering Materials; Vol. 712). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.712.15

Application of electro-discharge blasting technology for destruction of oversized rocks and rock massive splitting off. / Voitenko, N. V.; Yudin, A. S.; Kuznetsova, N. S.

Advanced Materials for Technical and Medical Purpose. Vol. 712 Trans Tech Publications Ltd, 2016. p. 15-19 (Key Engineering Materials; Vol. 712).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Voitenko, NV, Yudin, AS & Kuznetsova, NS 2016, Application of electro-discharge blasting technology for destruction of oversized rocks and rock massive splitting off. in Advanced Materials for Technical and Medical Purpose. vol. 712, Key Engineering Materials, vol. 712, Trans Tech Publications Ltd, pp. 15-19, Workshop on Advanced Materials for Technical and Medical Purpose, AMTMP-2016, Tomsk, Russian Federation, 15.2.16. https://doi.org/10.4028/www.scientific.net/KEM.712.15
Voitenko NV, Yudin AS, Kuznetsova NS. Application of electro-discharge blasting technology for destruction of oversized rocks and rock massive splitting off. In Advanced Materials for Technical and Medical Purpose. Vol. 712. Trans Tech Publications Ltd. 2016. p. 15-19. (Key Engineering Materials). https://doi.org/10.4028/www.scientific.net/KEM.712.15
Voitenko, N. V. ; Yudin, A. S. ; Kuznetsova, N. S. / Application of electro-discharge blasting technology for destruction of oversized rocks and rock massive splitting off. Advanced Materials for Technical and Medical Purpose. Vol. 712 Trans Tech Publications Ltd, 2016. pp. 15-19 (Key Engineering Materials).
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