Where does the explosive energy in rock blasting rounds go?
Document identifier: oai:DiVA.org:ltu-7751
Keyword: Engineering and Technology,
Civil Engineering,
Other Civil Engineering,
Teknik och teknologier,
Samhällsbyggnadsteknik,
Annan samhällsbyggnadsteknik,
Civil engineering and architecture - Geoengineering and mining engineering,
Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik,
Mining and Rock Engineering,
Gruv- och berganläggningsteknikPublication year: 2004Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: The energy partitioning of limestone production blasts has been measured under well controlled conditions; from rock properties determination, structural mapping and monitoring of drilling and charging, to VOD, 3D accelerometer and bench face movement measurements during the blast to post-blast fragment size measurements. The efficiency of the transfer of energy from the charges to the surrounding rock has been estimated by introducing a new explosives test, the cylinder expansion test, which is discussed to be-gin with. Hereby in-hole losses, seismic energy, kinetic energy of throw and fragmentation energy have been calculated. For the AN doped gassed bulk emulsion used in the quarry, it is estimated that 60-70 % of the explosive energy is transmitted to the rock, that the seismic and kinetic energy terms both amount to roughly 3-12 % and the fragmentation energy to less than 1-2 %. One candidate for the remaining losses, which are larger than the other three terms together, is the crushing of the blast-hole region. A rough estimate for the energy partitioning in bench blasting rounds is finally given.
Authors
Finn Ouchterlony
Luleå tekniska universitet; Geoteknologi
Other publications
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Ulf Nyberg
Other publications
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Mats Olsson
Other publications
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Ingvar Bergqvist
Dyno Nobel Europe AB
Other publications
>>
Lars Granlund
Dyno Nobel Europe AB
Other publications
>>
Henrik Grind
Nordkalk AB
Other publications
>>
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identifier: oai:DiVA.org:ltu-7751
datestamp: 2021-04-19T12:44:45Z
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titleInfo:
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lang: eng
title: Where does the explosive energy in rock blasting rounds go?
abstract: The energy partitioning of limestone production blasts has been measured under well controlled conditions; from rock properties determination structural mapping and monitoring of drilling and charging to VOD 3D accelerometer and bench face movement measurements during the blast to post-blast fragment size measurements. The efficiency of the transfer of energy from the charges to the surrounding rock has been estimated by introducing a new explosives test the cylinder expansion test which is discussed to be-gin with. Hereby in-hole losses seismic energy kinetic energy of throw and fragmentation energy have been calculated. For the AN doped gassed bulk emulsion used in the quarry it is estimated that 60-70 % of the explosive energy is transmitted to the rock that the seismic and kinetic energy terms both amount to roughly 3-12 % and the fragmentation energy to less than 1-2 %. One candidate for the remaining losses which are larger than the other three terms together is the crushing of the blast-hole region. A rough estimate for the energy partitioning in bench blasting rounds is finally given.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Civil Engineering
Other Civil Engineering
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Samhällsbyggnadsteknik
Annan samhällsbyggnadsteknik
@attributes:
lang: eng
topic: Civil engineering and architecture - Geoengineering and mining engineering
@attributes:
lang: swe
topic: Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik
@attributes:
lang: eng
authority: ltu
topic: Mining and Rock Engineering
genre: Research subject
@attributes:
lang: swe
authority: ltu
topic: Gruv- och berganläggningsteknik
genre: Research subject
language:
languageTerm: eng
genre:
publication/journal-article
ref
note:
Published
6
Godkänd; 2004; 20061211 (ysko)
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Ouchterlony
Finn
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Geoteknologi
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Nyberg
Ulf
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Olsson
Mats
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Bergqvist
Ingvar
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affiliation: Dyno Nobel Europe AB
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Granlund
Lars
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affiliation: Dyno Nobel Europe AB
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Grind
Henrik
role:
roleTerm: aut
affiliation: Nordkalk AB
originInfo:
dateIssued: 2004
relatedItem:
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titleInfo:
title: Science and Technology of Energetic Materials
identifier: 1347-9466
part:
detail:
@attributes:
type: volume
number: 65
@attributes:
type: issue
number: 2
extent:
start: 54
end: 63
location:
url: http://www.jes.or.jp/mag/stem/Vol.65/No.2.05.html
url: http://ltu.diva-portal.org/smash/get/diva2:980641/FULLTEXT01.pdf
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typeOfResource: text