Statistical assessment of intact rock properties for two underground mining projects at Raglan Mine, Quebec, Canada

Authors: Grenon, MartinBoudreau, CatherineBruneau, GenevièveCaumartin, Richard
Abstract: The design of underground mining excavations relies on geotechnical characterization of intact rock through laboratory testing. As mining project development progresses through prefeasibility to production stages, the reliability of estimates of rock mechanics properties needs to increase. However, it is challenging to determine the number of tests needed to adequately estimate intact rock properties at different development stages. This paper looks at the early stages of an underground mining project in the Canadian Arctic where two field and laboratory testing campaigns were conducted to evaluate intact rock tensile and uniaxial compressive strength. Results were statistically compared to target confidence levels associated with different stages of a mining project. The study provides insights for planning future field and laboratory testing campaigns. The methodology also provides a quantitative means to assess whether additional laboratory testing is needed to improve tensile and uniaxial compressive strength estimates.
Document Type: Article de recherche
Issue Date: 30 April 2020
Open Access Date: Restricted access
Document version: AM
This document was published in: CIM Journal, Vol. 11 (1), 1-15 (2020)
Taylor & Francis
Alternative version: 10.1080/19236026.2020.1730141
Collection:Articles publiés dans des revues avec comité de lecture

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