FREQUENCY-MAGNITUDE OF ROCKFALL EVENTS FOR HAZARD ANALYSIS; A COMPARISON OF DATA FROM LIDAR SCANNING WITH TRADITIONAL METHODS OF REPORTING

Megan van Veen, D. Jean Hutchinson, Ryan Kromer, Dave Gauthier, Matt Lato, Tom Edwards

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

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

ABSTRACT: Railways in Western Canada are exposed to rockfall hazards that can be understood and managed through the use of a rockfall event database, which includes information on rockfall magnitude and frequency. Traditional rockfall inventories collected by railway personnel are often incomplete or lacking in volume information. In this study, LiDAR change detection is used to understand variations in rockfall magnitude, mechanism, and source zone by rock type and rock mass quality for an area of track along the Thompson River valley near Lytton, BC. Results are compared to traditional inventories to understand how each may contribute to establishing a complete rockfall inventory and characterization for this section of rockfall vulnerable railway track.

RÉSUMÉ: Les chemins de fer de l™ouest du Canada sont exposés aux chutes de pierres. Ces évènements peuvent être mieux compris et mieux gérés grâce à l™utilisation d™une base de données incluant l™ampleur et la fréquence de ces chutes de pierres. Les inventaires traditionnels de chutes de pierres recueillis par le personnel des compagnies de chemins de fer sont souvent incomplets ou manquent d™information sur le volume de pierres. Dans cette étude, la détection des changements par LiDAR est utilisée pour comprendre la grosseur, les mécanismes et les zones sources des effondrements le long du chemin de fer de la vallée de la rivière Thompson près de Lytton, BC. Les résultats obtenus sont comparés aux inventaires traditionnels pour comprendre comment chaque chute de pierres peut contribuer à l™instauration d™un inventaire complet pour cette section de chemin de fer vulnérable.

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Cite this article:
Megan van Veen; D. Jean Hutchinson; Ryan Kromer; Dave Gauthier; Matt Lato; Tom Edwards (2015) FREQUENCY-MAGNITUDE OF ROCKFALL EVENTS FOR HAZARD ANALYSIS; A COMPARISON OF DATA FROM LIDAR SCANNING WITH TRADITIONAL METHODS OF REPORTING in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.

@article{406,author = Megan van Veen; D. Jean Hutchinson; Ryan Kromer; Dave Gauthier; Matt Lato; Tom Edwards,title = FREQUENCY-MAGNITUDE OF ROCKFALL EVENTS FOR HAZARD ANALYSIS; A COMPARISON OF DATA FROM LIDAR SCANNING WITH TRADITIONAL METHODS OF REPORTING,year = 2015}