CIM’s Rock Engineering Society and CGS’ Rock Mechanics Division are collaborating through CARMA to launch a Rock Mechanics Webinar series. The first event was held on September 29th, 2023.

DateWebinar InformationRegistration LinkPresentation
September 29, 2023Application of Systematic Point Load Testing to Characterization of Massive, Veined Orebodies
Dr. Matthew E. Pierce (matt@pierce-engineering.com)
Abstract: The large, deep orebodies now commonly exploited by caving mining methods are often sparsely jointed but contain complex networks of hairline defects, stockwork veins and sheeted veins of varying mineralogy and strength and significant variability in both the style and intensity of hydrothermal alteration. These features result in coefficients of variance in intact strength that often approach unity. Furthermore, there are multiple scales of variability in both intact and vein strength that complicate domaining and strength characterization, making it difficult to collect enough quality data to define the spatial variability in rock strength at scales relevant to mining. As a result, domaining is often conducted based on lithology plus alteration style/intensity, resulting in large domains with a significant intra-domain variation in rock quality. This talk describes how high density, systematic point load testing has been applied within characterization studies to address some of these challenges and provide a basis for more reliable forecasting of tunnel, pillar and cave performance.
Short-Bio: Matt is a geotechnical and mining engineer with over 25 years of experience in the geomechanical analysis and design of underground and open pit mines. He holds degrees in Geological Engineering and Mining Engineering from Queen’s University and a Ph.D. in Mining Engineering from the University of Queensland. Matt became an independent consultant in 2016 after 18 years with Itasca Consulting Group in Minneapolis and three years as co-director of the Rio Tinto Center for Underground Mine Construction in Sudbury.
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