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

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

1 Цитирования (Scopus)

Аннотация

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.

Язык оригиналаАнглийский
Название основной публикацииAdvanced Materials for Technical and Medical Purpose
ИздательTrans Tech Publications Ltd
Страницы15-19
Число страниц5
Том712
ISBN (печатное издание)9783035710649
DOI
СостояниеОпубликовано - 2016
СобытиеWorkshop on Advanced Materials for Technical and Medical Purpose, AMTMP-2016 - Tomsk, Российская Федерация
Продолжительность: 15 фев 201617 фев 2016

Серия публикаций

НазваниеKey Engineering Materials
Том712
ISSN (печатное издание)1013-9826

Конференция

КонференцияWorkshop on Advanced Materials for Technical and Medical Purpose, AMTMP-2016
СтранаРоссийская Федерация
ГородTomsk
Период15.2.1617.2.16

ASJC Scopus subject areas

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

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