@inproceedings{eb7f000d9f414e5f9fb0d3127f55ab58,
title = "Application of electro-discharge blasting technology for destruction of oversized rocks and rock massive splitting off",
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.",
keywords = "Destruction of rock, Electro-discharge blasting, High-current pulse generator, Plasma channel",
author = "Voitenko, {N. V.} and Yudin, {A. S.} and Kuznetsova, {N. S.}",
year = "2016",
doi = "10.4028/www.scientific.net/KEM.712.15",
language = "English",
isbn = "9783035710649",
volume = "712",
series = "Key Engineering Materials",
publisher = "Trans Tech Publications Ltd",
pages = "15--19",
booktitle = "Advanced Materials for Technical and Medical Purpose",
note = "Workshop on Advanced Materials for Technical and Medical Purpose, AMTMP-2016 ; Conference date: 15-02-2016 Through 17-02-2016",
}