Thin seam drill and blast optimisation at Minerva mine

Goodsell, Brett (2006). Thin seam drill and blast optimisation at Minerva mine B.Sc Thesis, School of Engineering, The University of Queensland.

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Author Goodsell, Brett
Thesis Title Thin seam drill and blast optimisation at Minerva mine
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2006
Thesis type B.Sc Thesis
Supervisor Shivakumar Karekal
Total pages 48
Language eng
Subjects 091405 Mining Engineering
Formatted abstract
 Minerva Mine experiences unique geological conditions among Bowen Basin coal mines. In particular, the steeply dipping, multiple thin seams mean typical drill and blast techniques may not be the most effective. Blast design parameters and predicted fragmentation based on a Kuzram fragmentation model adapted by Lilly (1986) were recorded over a nine month period from November, 2005 to July, 2006. These variables were then compared to the productivity achieved while excavating the individual blasts to determine if relationships existed, which could be used to design future blasts for increased productivity.

The results of this analysis showed that none of the parameters studied showed any correlation with productivity, and therefore no recommendations for future blasts could be made. The results did show that some of the blast design parameters, in particular the bench stiffness ratio, were outside the normal ranges and should have indicated poor blasting
results. In reality, this was not the case, possibly indicating the bench stiffness ratio has limited use on thin benches.
Keyword Geological
Coal -- Geology -- Queensland -- Bowen Basin.

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
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Created: Thu, 04 Sep 2014, 10:19:06 EST by Jessica Minshull on behalf of Scholarly Communication and Digitisation Service