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Rock fall hazard control along a section of railway based on quantified risk
Authors:Renato Macciotta  C Derek Martin  David M Cruden  Michael Hendry  Tom Edwards
Institution:1. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canadamacciott@ualberta.ca;3. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada;4. Canadian National Railway, Edmonton, Canada
Abstract:Rock falls represent a large percentage of landslide-related hazards reported by Canadian railways in mountainous terrain. A 54.7?km-long section of railway through the Canadian Cordillera is examined that experiences, on average, 18 rock falls each year. An approach for rock fall hazard management is developed based on quantified risk. The approach focuses on defining railway operation procedures (freight train operations and track maintenance) that comply with quantified risks. Weather-based criteria that define periods when rock falls are more likely to occur along the study area are examined. These criteria are used herein to reduce exposure to rock falls and reduce their consequences. Several freight train operation strategies are proposed that comply with a tolerable level of risk adopted in this study for illustrative purposes. The approach provides a simple, flexible and practical strategy for railway operations that can be regularly adopted by the operators, and that is based on a more comprehensive assessment of quantified risk.
Keywords:Rock falls  hazard  quantitative risk  slope stability
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