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Dynamic blast compaction of some granular materials: small-scale tests and numerical modelling of a mining-related problem

Johansson, Daniel (author)
Luleå tekniska universitet,Geoteknologi
Villegas, Tomas (author)
Luleå tekniska universitet,Geoteknologi
Ouchterlony, Finn (author)
Luleå tekniska universitet,Mining and Geotechnical Engineering - Swedish Blasting Research Centre
 (creator_code:org_t)
2010
2010
English.
In: International Journal of Mining and Mineral Engineering. - 1754-890X .- 1754-8918. ; 2:2, s. 79-100
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Sub-Level Caving (SLC) is an important mass mining method, involving blasting of ore against granular material in the form of caving debris. The debris compaction due to blasting influences the caving process. Blasting tests were made on cylinders of magnetic mortar placed inside plastic cylinders and confined by packed granular material. By introducing the acoustic impedance between the mortar and the confining granular material, the compaction is found to depend on material, specific charge and physical properties of the debris with statistical analysis. The tests have shown to be a good input for numerical modelling of blast compaction.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik -- Annan samhällsbyggnadsteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Civil Engineering -- Other Civil Engineering (hsv//eng)

Keyword

confined blasting
dynamic blast compaction
SLC
sub-level caving
granular materials
numerical modelling
distinct element modelling
mass mining
debris compaction
ore blasting
blasting tests
acoustic impedance
sprängning
kompaktering
numerisk modellering
Mining and Rock Engineering
Gruv- och berganläggningsteknik

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ref (subject category)
art (subject category)

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