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Revisiting rock classification to estimate rock mass properties

Robert Bertuzzi

This paper presents the results of ongoing research carried out by the author exploring methods to provide a more robust estimate of rock mass properties specifically for use in tunnel design. Data from various large-scale rock mass failures are introduced, including coal pillars. The damage-initiation, spalling-limit approach is compared to the coal pillar database. New comparisons of estimating the geological strength index (GSI) and relationships to estimate the Hoek–Brown failure criterion parameters, mb, s and a, are presented. Keywords: Rock mass properties, Hoek–Brown strength criterion, Geological strength index (GSI), Tunnelling

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Revisiting rock classification to estimate rock mass properties

Robert Bertuzzi

This paper presents the results of ongoing research carried out by the author exploring methods to provide a more robust estimate of rock mass properties specifically for use in tunnel design. Data from various large-scale rock mass failures are introduced, including coal pillars. The damage-initiation, spalling-limit approach is compared to the coal pillar database. New comparisons of estimating the geological strength index (GSI) and relationships to estimate the Hoek–Brown failure criterion parameters, mb, s and a, are presented. Keywords: Rock mass properties, Hoek–Brown strength criterion, Geological strength index (GSI), Tunnelling

Revisiting rock classification to estimate rock mass properties

Robert Bertuzzi

This paper presents the results of ongoing research carried out by the author exploring methods to provide a more robust estimate of rock mass properties specifically for use in tunnel design. Data from various large-scale rock mass failures are introduced, including coal pillars. The damage-initiation, spalling-limit approach is compared to the coal pillar database. New comparisons of estimating the geological strength index (GSI) and relationships to estimate the Hoek–Brown failure criterion parameters, mb, s and a, are presented. Keywords: Rock mass properties, Hoek–Brown strength criterion, Geological strength index (GSI), Tunnelling

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Title:

Revisiting rock classification to estimate rock mass properties

Contributors:

Robert Bertuzzi (author)

Published in:

Journal of Rock Mechanics and Geotechnical Engineering, Vol 11, Iss 3, Pp 494-510 (2019)

Publication date:

2019

ISSN:

DOI:

https://doi.org/10.1016/j.jrmge.2018.08.011

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

Engineering geology. Rock mechanics. Soil mechanics. Underground construction , TA703-712

Metadata by DOAJ is licensed under CC BY-SA 1.0

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