SLOPE OBSERVATIONS AND FIELD MAPPING TO VERIFY THE STABILITY OF SLOPES NEAR KITIMAT, BC

Ali Khalili, Jason Pellett, Brian Hall, Jack Price

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: Landslides and Slope Stability V / Mouvements de terrain et stabilité des pentes V

ABSTRACT: Landslides and slope instabilities have previously occurred in the vicinity of Kitimat, British Columbia in sensitive or quick clays of glaciomarine origin. The assessment of slope stability has been one of the key challenges in this area due to the difficulty in reliably estimating the shear strength parameters as well as other factors that influence slope stability. Future developments along in this area, necessitate the prediction of slope performance. As an alternate verification approach, reconnaissance of the slopes along some of the Forestry Service Roads was performed and detailed notes of the slope configuration along with signs of instability or distress were recorded at numerous locations. The collected data from the site is reduced and presented graphically to provide insights into the anticipated performance of the slopes.

RÉSUMÉ: Des glissements de terrain ont déjà eu lieu dans la région de Kitimat, en Colombie-Britannique, dans des formations d™argiles sensibles d™origine glaciomarine. L™évaluation de la stabilité des pentes est l™un des défis dans cette région vue la difficulté à estimer de façon fiable la résistance en cisaillement, ainsi que d™autres caractéristiques clés influençant la stabilité des talus d™argile sensible. Les projets de cette région nécessitent la prédiction de la performance des pentes. Comme approche de vérification, une visite de reconnaissance de plusieurs talus le long des routes forestières de la région a été réalisée. Ainsi, des notes détaillées sur la configuration des talus, avec des signes d'instabilité ou de détresse, ont été enregistrées dans de nombreux endroits. Les données recueillies du site ont été représentées graphiquement afin d™avoir des indices permettant d™anticiper la performance des pentes.

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Cite this article:
Ali Khalili; Jason Pellett; Brian Hall; Jack Price (2015) SLOPE OBSERVATIONS AND FIELD MAPPING TO VERIFY THE STABILITY OF SLOPES NEAR KITIMAT, BC in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.

@article{153,author = Ali Khalili; Jason Pellett; Brian Hall; Jack Price,title = SLOPE OBSERVATIONS AND FIELD MAPPING TO VERIFY THE STABILITY OF SLOPES NEAR KITIMAT, BC,year = 2015}