![]() The results based on a high-resolution digital elevation model from a LiDAR dataset were compared with those based on a coarse digital elevation model. Historical rockfall records were used to calibrate the physical characteristics of the rockfall processes. Spatial modeling was conducted using Rockfall Analyst, a three dimensional extension to GIS, to determine the characteristics of the rockfalls in terms of travel distance, velocity and energy. LiDAR provides accurate topographical information of the source area of rockfalls and along their paths. This paper discusses a hazard assessment strategy for rockfalls along a section of a Canadian railway using LiDAR and spatial modeling. ![]() ![]() The proactive management of these rockfall hazards requires enabling technologies. These rockfalls cause damage to infrastructure, interruption of business, and environmental impacts, and their occurrence varies both spatially and temporally. Rockfalls have been significant geohazards along the Canadian Class 1 Railways (CN Rail and CP Rail) since their construction in the late 1800s.
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