Mass blast computer design, analysis and monitoring - a case study

Onederra, I. A., Player, J., Wade, P. and Chitombo, G. P. (1999) Mass blast computer design, analysis and monitoring - a case study. Fragblast, 3 3: 213-235. doi:10.1080/13855149909408047

Author Onederra, I. A.
Player, J.
Wade, P.
Chitombo, G. P.
Title Mass blast computer design, analysis and monitoring - a case study
Journal name Fragblast   Check publisher's open access policy
ISSN 1385-514X
Publication date 1999-01-01
Sub-type Article (original research)
DOI 10.1080/13855149909408047
Volume 3
Issue 3
Start page 213
End page 235
Total pages 23
Editor H. P. Rossmanith
Place of publication Rotterdam, Netherlands
Publisher AA Balkema
Language eng
Subject C3
290701 Mining Engineering
640299 Other non-metallic minerals (incl. diamonds)
Formatted abstract
In underground operations, the controlled recovery of large quantities of valuable ore in the form of stopes and/or remnant pillars has involved the application of mass blasting techniques. An underground mass blast may be defined as an approach, which requires the design and implementation of a large number of drilling patterns; charging and sequencing strategies with the aim to extract a large section of ore. In the context of underground mining and productivity, mass blasts may vary in size and can typically range from the planned ore recovery of 100,0001 to in excess of 1,000,000 t. The recovery of such amount of material presents a particular challenge to the blasting engineer from design through to the implementation stages. This paper aims to provide engineers with some background and guidelines for the design, analysis and monitoring of underground mass blasts, thus further facilitating the transition from design to implementation. With reference to a particular case study, computer aided design tools are described and used in both the design and analysis process. A blast monitoring strategy was carried out in this study with the view to assess and describe the performance of the blast. Monitoring was also carried out to detect seismic activity associated with the redistribution of stresses. The use of the computer software tools proved to be essential in the design and post-blast analysis stages of the mass blast. Computer simulations justified the inclusion of re-drills and additional rings to ensure a more efficient explosive energy distribution, simulations also provided a full 3D visualisation of the blast sequence, allowing engineers to make final design adjustments.
Q-Index Code C3

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
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Created: Tue, 10 Jun 2008, 21:28:52 EST