Multi-geohazard Risk Assessment Along Railway Corridors

M Lato

In the proceedings of: GeoVancouver 2016: 69th Canadian Geotechnical Conference

Session: INFRASTRUCTURE - 1 Highways & Bridges

ABSTRACT: This paper presents the development and implementation of a multi-geohazard semi-quantitative risk assessment framework for a specific railway corridor. The risk assessment system estimates the relative risk of loss of life due to a train derailment resulting from a geohazard occurrence. The methodology presented examines the threat from five different geohazard types in a consistent framework facilitating the evaluation of the different geohazard types on a consistent risk scale. The geohazard risk assessment information is stored in an online map-based database. The output of the semi-quantitative risk estimation methodology is a risk rating between Level 1 and Level 7 for each credible geohazard affecting the railway. The risk rating level distinguishes the order of magnitude annual probability of loss of life from geohazards along the railway. The risk ratings are used to aid in the prioritization of risk management efforts, which include annual inspections and risk control works. This paper presents the semi-quantitative geohazard risk rating methodology and a high-level description of the various types of geohazards considered. The methodology is grounded in field-based site characterization, analysis of 2-dimensional and 3-dimensional remote sensing data, and expert opinion.

RÉSUMÉ: -déraillement ferroviaire cause par un aléa géologique qui résulte en une perte de vie. La méthodologie présentée ues. Les résultats des évaluations du risque pour chaque alea géologique sont disponible dans une base de données cartographique en ligne. Le produit de la méthode semi-classement du risque entre le niveau 1 et le niveau 7 pour chaque aléa géologique crédible qui affecte la voie ferrée. Le niveau du risque fourni un ordre de grandeur en ce qui a trait à la probabilité annuelle de pertes de vies humaines associé avec les différents aléas géologiques le long de la des priorités des efforts et de la gestion des risques, ce qui incluent les inspections annuelles et les efforts de contrôle des risques. Cet article présente la méthodologie semi-qua

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