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Vol 156
Pages:
136-139
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Evaluation of the influence of the blast pulse on the parameters of the blast funnel

Authors:
G. P. Zileev1
A. G. Zileev2
About authors
  • 1 — Sevuralboksitruda
  • 2 — Institute of Chemistry and Chemical Technology, SB RAS
Date submitted:
2003-06-18
Date accepted:
2003-07-13
Date published:
2004-01-01

Abstract

The influence of the duration of the explosive pulse on the size of the resulting crater is investigated. Various factors affecting its size are considered. For this purpose, experiments were carried out at the mines of AO Sevuralboksitruda. It is established that the radius of the explosive funnel is equal to the radius of distribution of a wave of stresses for the duration of an explosive load, defined depending on the point of initiation of a charge, and cannot exceed the size of the radius of a cracking zone at influence on a monolithic rock massif by energy of explosion of an elongated charge. The minimum length of the charge, providing the maximum possible size of the blast funnel radius, depends on the initiation scheme, the detonation rate of the explosive used, physical and mechanical properties of rocks of the blasted massif and is determined by the obtained formulas.

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References

  1. Диплом на открытие № 70 от 27.02.98 г. Регистрационный № 81/82. Закономерность формирования зон смятия и трещинообразования при воздействии на скальный массив энергией взрыва удлиненного заряда /А.П.Андриевский, Б.Н.Кутузов.
  2. Кутузов Б.Н. Новая теория и новая технология разрушения горных пород удлиненными зарядами взрывчатых веществ / Б.Н.Кутузов, А.П.Андриевский. Новосибирск: Наука, 2002. 96 с.
  3. Кантор В.Х. Влияние длины заряда на эффективность взрывания скважинных зарядов рыхления // Направленные взрывы на склонах. Фрунзе: Илим, 1980. С.84-95.
  4. Миндели Э.О. Разрушение горных пород. М.: Недра, 1975. 600 с.
  5. Сорокин В.Т. Рациональная длина зарядов // Повышение эффективности разработки месторождений полезных ископаемых Восточной Сибири. Иркутск, 1986. С.77-80.

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