Engineering characteristic of Georgian Bay Formation in Toronto
L.F. Cao, S.M. Peaker, S. Ahmad, A. Sirati
In the proceedings of: GeoRegina 2014: 67th Canadian Geotechnical ConferenceSession: Engineering Geology and Rock Mechanics
ABSTRACT: A series of laboratory and in-situ testing on the bedrock of Georgian Bay Formation has been carried out in relation to a rock tunnel project in Toronto, Ontario. This paper presents the laboratory and in-situ test results. The rock strengths obtained from various laboratory tests are compared and discussed. The deformation moduli of rock mass obtained from in-situ pressuremeter tests are compared with the moduli of the intact rock samples measured from laboratory unconfined and triaxial compression tests. It is found that the deformation moduli of shaly rock mass measured from in-situ tests are generally higher than those measured on the rock samples in laboratory. The use of modulus obtained from unconfined compression testing on the intact shaly rock sample will lead to a conservative approach in geotechnical design for the shaly rock.
RÉSUMÉ: A effectué une série de tests sur le substratum rocheux de la baie Georgienne Formation in situ et de laboratoire en ce qui concerne un projet de tunnel de rock à Toronto, en Ontario. Cet article présente les résultats des tests en laboratoire et in situ. Les points forts de roche provenant de différents tests de laboratoire sont comparés et discutés. Les modules de déformation de roche masse provenant d'essais pressiométriques in situ sont comparés avec les modules des échantillons de roche intacte mesurées de laboratoire non confiné et triaxiales tests de compression. Il est constaté que les modules de déformation des roches schisteuses masse mesurée à partir d'essais in-situ sont généralement plus élevées que celles mesurées sur les échantillons de roche en laboratoire. L'utilisation du module obtenu à partir d'essais compression non confinés sur l'échantillon de roche schisteux intacte conduira à une approche prudente dans la conception géotechnique pour le rocher schisteux.
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L.F. Cao; S.M. Peaker; S. Ahmad; A. Sirati (2014) Engineering characteristic of Georgian Bay Formation in Toronto in GEO2014. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GeoRegina14Paper110,
author = L.F. Cao; S.M. Peaker; S. Ahmad; A. Sirati,
title = Engineering characteristic of Georgian Bay Formation in Toronto,
year = 2014
}
title = Engineering characteristic of Georgian Bay Formation in Toronto,
year = 2014
}