Towards a complete validation of the lattice scheme in the Hybrid Stress Blasting Model (HSBM)

Onederra, I., Chitombo, G. P., Cundall, P. A. and Furtney, J. K. (2009). Towards a complete validation of the lattice scheme in the Hybrid Stress Blasting Model (HSBM). In: Jose A. Sanchidrián, Fragblast 9: Rock Fragmentation by Blasting. Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting. Fragblast 9: 9th International Symposium on Rock Fragmentation by Blasting, Granada, Spain, (343-351). 13-17 September 2009.


Author Onederra, I.
Chitombo, G. P.
Cundall, P. A.
Furtney, J. K.
Title of paper Towards a complete validation of the lattice scheme in the Hybrid Stress Blasting Model (HSBM)
Conference name Fragblast 9: 9th International Symposium on Rock Fragmentation by Blasting
Conference location Granada, Spain
Conference dates 13-17 September 2009
Convener Universidad Politécnica de Madrid
Proceedings title Fragblast 9: Rock Fragmentation by Blasting. Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting
Journal name Rock Fragmentation by Blasting - Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting, FRAGBLAST 9
Place of Publication Leiden, Netherlands
Publisher CRC Press/Balkema
Publication Year 2009
Sub-type Fully published paper
ISBN 9780415482967
0415482968
Editor Jose A. Sanchidrián
Start page 343
End page 351
Total pages 9
Language eng
Formatted Abstract/Summary
The Hybrid Stress Blasting Model (HSMB) is a numerical blast modelling framework which links an ideal and non-ideal detonation code to a geomechanical rock model. The particle flow code originally implemented in the geomechanical rock model (PFC3D) has now been replaced by a lattice scheme. Results from controlled blasting experiments have shown that this scheme is able to realistically produce breakage patterns from cylinder and cube tests. Predicted versus measured fragment size distributions have shown slight differences attributed in part to the influence of the assumed cubic shape of fragments to calculate size. Tests have also identified the finest fragment size in the predicted distribution to be approximately twice the lattice model resolution. With regards to fragment velocities, results under-estimate measured values but follow the trend of increasing fragment velocity as a function of explosive energy. A full scale consistency test has shown the ability of the lattice scheme to realistically define the extent of breakage and blast damage envelopes.
Copyright Taylor & Francis Group, London
Subjects E1
8402 Primary Mining and Extraction Processes of Mineral Resources
091402 Geomechanics and Resources Geotechnical Engineering
091405 Mining Engineering
091499 Resources Engineering and Extractive Metallurgy not elsewhere classified
Keyword HSBM
Hybrid Stress Blast Model
Geomechanical rock model
Numerical blast modelling
Blasting
Fragmentation
Lattice scheme
Q-Index Code E1
Q-Index Status Provisional Code
Additional Notes Author title: " Towards a complete validation of the lattice scheme in the Hybrid Stress Blasting Modes (HSBM)". Presented during Session 6: "Modeling (I)". Published in Chapter 4: "Modelling of rock blasting".

 
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Created: Thu, 04 Mar 2010, 14:55:02 EST by Laurie Beechey on behalf of WH Bryan Mining and Geology Centre