ROCKFALL PROTECTION ALONG HIGHWAY 403 IN HAMILTON, ON: A RECENT RE-ASSESSMENT AND APPLICATION OF EMERGING SITE INVESTIGATION METHODS.

David Wood

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

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

ABSTRACT: The Niagara escarpment is a unique area of high relief and exposed bedrock in Southern Ontario between Niagara in the south, and Tobermory in the transects the escarpment with a long approach along the toe of an active talus slope, and directly adjacent to exposed bedrock near to the crest of the escarpment, within the limits of the City of Hamilton. Engineered rockfall hazard protection extends for approximately 1.5 km through this area, with a combination of a 500 kJ capacity rigid catchment fence and a narrow ditch/clear zone. Following a number of rockfall events in 2012, some of which impacted the fence and reached the shoulder of the eastbound lanes, a detailed assessment of the efficacy of the existing protection was undertaken. In this paper we report on the application of traditional and emerging site investigation methods employed in this assessment. We focus on the use of oblique aerial photogrammetry to generate a detailed 3D terrain model of the 1.5 km long slope, from crest to road, and report on the use of that information in a number of novel ways to evaluate the protection provided, and recommend further risk management measures.

RÉSUMÉ: sud de Niagara et le nord de Toberements en 2012, dont quelques-uns ont heurté ette information pour évaluer la protection mise en place et recommander des mesures de gestion des risques futures.

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Cite this article:
David Wood (2015) ROCKFALL PROTECTION ALONG HIGHWAY 403 IN HAMILTON, ON: A RECENT RE-ASSESSMENT AND APPLICATION OF EMERGING SITE INVESTIGATION METHODS. in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.

@article{492,author = David Wood,title = ROCKFALL PROTECTION ALONG HIGHWAY 403 IN HAMILTON, ON: A RECENT RE-ASSESSMENT AND APPLICATION OF EMERGING SITE INVESTIGATION METHODS.,year = 2015}