The Analysis of Strainbursts in the Sudbury Region And Numerical Modelling of Destress Blasting
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Authors
Gingras Little, Kristopher
Date
Type
thesis
Language
eng
Keyword
Mining Engineering , Strainbursting , Destress Blasting , Safety , Drift Development , Sudbury , Underground Mining , Rock Mechanics , Rock Stresses , Strainbursts , Destress Blasting
Alternative Title
Abstract
The practice of destress blasting to reduce the risk of strainbursting in mines has been used since the early 1950's. Understanding both the variability in causes of strainbursting and the method by which destress blasting could reduce its risk, will allow future researchers to develop better guidelines for destress blasting. This research examines records of strainbursts at three mines near Sudbury, finding that the current method of recording these events yields little information with a large amount of variability dependent on many factors. Significantly, a large proportion of the events had workers at the face at the same time as the events occurred, continuing to highlight the safety risk presented by strainbursting. In-situ trials were also completed, with numerical modelling finding that destress blasting could both increase and decrease stresses in the rock mass depending on the placement and damage zones of the explosive charges.
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Attribution-NonCommercial-NoDerivs 3.0 United States
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.