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Influence of Density of Emulsion Explosives on its Velocity of Detonation and Fragmentation of Blasted Muckpile


Affiliations
1 Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad-826 004, India
2 Sarpi Colliery, Bankola Area, Eastern Coalfield Limited, District Barddhaman 713 363, India
3 Gulf Oil Corporation Limited, Kolkata 700 107, India
 

Opencast mining accounts for about 86% of the produced coal in India. Most of the opencast mines in the country use bulk emulsion explosives. The total consumption of explosives in India is around 550,000 tonnes annually. It has been shown that detonation velocities vary with the density of the emulsion explosive. Here we describe experiments that have been conducted to understand the influence of velocity of detonation of emulsion explosives on fragmentation of blasted muckpile over a range of densities. The density of explosives was varied from 0.6 to 1.1 g/cc which resulted in the variation of detonation velocity from 3262 to 4624 m/s.

Keywords

Blasted Muckpile, Detonation Velocity, Emulsion Explosives Density, Opencast Mines.
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  • Influence of Density of Emulsion Explosives on its Velocity of Detonation and Fragmentation of Blasted Muckpile

Abstract Views: 287  |  PDF Views: 137

Authors

A. Mishra
Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad-826 004, India
M. Rout
Sarpi Colliery, Bankola Area, Eastern Coalfield Limited, District Barddhaman 713 363, India
D. R. Singh
Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad-826 004, India
S. Jana
Gulf Oil Corporation Limited, Kolkata 700 107, India

Abstract


Opencast mining accounts for about 86% of the produced coal in India. Most of the opencast mines in the country use bulk emulsion explosives. The total consumption of explosives in India is around 550,000 tonnes annually. It has been shown that detonation velocities vary with the density of the emulsion explosive. Here we describe experiments that have been conducted to understand the influence of velocity of detonation of emulsion explosives on fragmentation of blasted muckpile over a range of densities. The density of explosives was varied from 0.6 to 1.1 g/cc which resulted in the variation of detonation velocity from 3262 to 4624 m/s.

Keywords


Blasted Muckpile, Detonation Velocity, Emulsion Explosives Density, Opencast Mines.



DOI: https://doi.org/10.18520/cs%2Fv112%2Fi03%2F602-608