68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference

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

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

Ali Khalili, Tetra Tech EBA Inc. (Canada)
Jason Pellett, Tetra Tech EBA Ltd. (Canada)
Brian Hall, Tetra Tech EBA Ltd. (Canada)
Jack Price, Tetra Tech EBA Ltd. (Canada)

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.