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Vol 148 No 1
Pages:
138-141
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Research article
Without section

Method for calculation of additional rock fracture at the quasi-static stage of blasting action

Authors:
M. G. Menzhulin1
G. P. Paramonov2
Yu. A. Mironov3
A. V. Yurovskikh4
About authors
  • 1 — Saint Petersburg Mining University
  • 2 — Saint Petersburg Mining University
  • 3 — Saint Petersburg Mining University
  • 4 — Saint Petersburg Mining University
Date submitted:
2000-06-30
Date accepted:
2000-07-05
Date published:
2001-01-01

Abstract

To calculate the parameters of drilling and blasting operations for explosive destruction of rocks, empirical dependences or relations based only on the action of stress waves are used. It is known, however, that at the quasi-static stage of the explosion there is additional destruction of rocks. It is manifested both in the secondary crushing of pieces in the fracture zone and in the increase in the size of this zone. Qualitatively, these effects are known and used, in particular, in the creation of various types of faces in the mouths of boreholes and wells, increasing the duration of the quasi-static stage of the explosion. However, the physical and mechanical processes of additional fracture at the quasi-static stage of the explosion have been studied much less than at the wave stage.

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References

  1. Боровиков В.А. Техника и технология взрывных работ. Учебное пособие / В.А. Боровиков, И.Ф. Ванягин; Ленинградский горный ин-т. Л, 1985. 89 с.
  2. Макмилан Н. Идеальная прочность твердых тел // Атомистика разрушения: Сб. статей. М.: Мир, 1987. С.35-103.
  3. Парамонов Г.П. Предупреждение взрывов сульфидной пыли на колчеданных рудниках / Санкт-Петербургский горный ин-т. СПб, 1999. 132 с.
  4. Родионов В.Н. Основы геомеханики / В.Н. Родионов, И.А. Сизов, В.М. Цветков. М.: Недра, 1986. 301 c.
  5. Шемякин Е.И. О разрушении горных пород в ближней зоне подземного взрыва / Е.И. Шемякин, А.Н. Кочанов // Взрывное дело. №92/49. М., 1999. С.7-19.

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