Quantitative risk assessment of slope hazards along a section of railway in the Canadian Cordillera—a methodology considering the uncertainty in the results

Macciotta, Renato; Martin, C. Derek; Morgenstern, N. R.; Crudën, D. M.

doi:10.1007/s10346-014-0551-4

Cited by 60 publications

(40 citation statements)

References 17 publications

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“…Near real-time slope monitoring is still rarely used for rockfall forecasting and risk management. Typical solutions either focus on rockfall magnitude-frequency relationships and probabilistic analyses of risk distribution, or on the detection of pre-failure damage features (e.g., deformation, tension crack opening, precursory rockfalls) through baseline monitoring techniques (Hungr et al 1999;Rosser et al 2007;Stock et al 2012;Macciotta et al 2015Macciotta et al , 2016Kromer et al 2017). However, these are not suited to the implementation of an early-warning system, which in some scenarios may be the only viable option for reducing risk to tolerable levels.…”

Section: Discussionmentioning

confidence: 99%

“…The quantitative estimation and baseline monitoring of rockfall hazard along transportation corridors is an increasingly important topic of research, due to the great impact on the travelling public and on local populated areas (Lato et al 2009;Salvini et al 2013;Macciotta et al 2015;Kromer et al 2017). Defining expected trajectories, return periods, and failure locations is of primary importance to support decision making and design appropriate remediation measures (Hungr et al 1999;Macciotta et al 2016). However, this is sometimes not sufficient for reducing risk to tolerable levels in scenarios characterized by a diffuse and persistent human presence, owing to the uncertainties inherent to probabilistic analyses and to the rapid nature of failure development.…”

Section: Introductionmentioning

confidence: 99%

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Rockfall forecasting and risk management along a major transportation corridor in the Alps through ground-based radar interferometry

et al. 2019

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Rockfalls are a recurrent cause of disruption for transportation corridors running along the bottom of U-shaped alpine valleys. In some scenarios, risk may effectively be reduced only by implementing an early-warning system able to give notice of incipient failures on the slope. This paper describes a successful example of rockfall forecasting and risk management in proximity of the Gallivaggio sanctuary (San Giacomo Valley, Central Italian Alps). Since 2016, a Ground-Based Synthetic Aperture Radar continuously monitored a roughly 500-m high, sub-vertical granitic slope. Monitoring data evidenced the presence and continued movement of a~5000 m 3 highly unstable mass, having a projected fall trajectory directly threatening the sanctuary and the adjacent segment of a national road. Traffic and access to the sanctuary were regulated by a sequence of alert thresholds, and restrictive orders were issued according to the activity of the instability. The rock mass eventually fell, and the failure-time was accurately predicted several hours in advance. Despite damage to both the road and buildings, the timely evacuation of the area prevented any loss of life. The case study provides a reference framework to better manage rockfall risk in areas where the installation of adequate protective barriers is not technically feasible.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rockfall forecasting and risk management along a major transportation corridor in the Alps through ground-based radar interferometry

et al. 2019

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“…(1) is generally used (e.g. Bunce et al, 1997;Ferlisi et al, 2012;Mignelli et al, 2012;Corominas and Mavrouli, 2013;Wang et al, 2014;Macciotta et al, 2015):…”

Section: Approaches Neglecting the Events Dimensionmentioning

confidence: 99%

Brief communication: On direct impact probability of landslides on vehicles

Nicolet

Jaboyedoff

Cloutier³

et al. 2016

Nat. Hazards Earth Syst. Sci.

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Abstract. When calculating the risk of railway or road users of being killed by a natural hazard, one has to calculate a temporal spatial probability, i.e. the probability of a vehicle being in the path of the falling mass when the mass falls, or the expected number of affected vehicles in case such of an event. To calculate this, different methods are used in the literature, and, most of the time, they consider only the dimensions of the falling mass or the dimensions of the vehicles. Some authors do however consider both dimensions at the same time, and the use of their approach is recommended. Finally, a method considering an impact on the front of the vehicle is discussed.

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“…Based on the economic and social impact of the expected event, these kinds of studies are crucial for risk management purposes, because they can be employed as a tool to locate and design proper mitigation economic and social impact of the expected event, these kinds of studies are crucial for risk management purposes, because they can be employed as a tool to locate and design proper mitigation measures. To this purpose, several qualitative and quantitative approaches have been proposed in the scientific literature for the evaluation of hazard and risk arising from rockfalls (e.g., [8,[11][12][13][14][15][16][17][18][19][20][21]). Some of these are empirical or semi-empirical methods, which take into account the probability of rock failures, while others involve a statistical analysis of the potential rockfall trajectories and the probability of bad-consequences after the event.…”

Section: Introductionmentioning

confidence: 99%

Rockfall Analysis for Preliminary Hazard Assessment of the Cliff of Taormina Saracen Castle (Sicily)

et al. 2018

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Abstract:A rockfall analysis at one of the most relevant cultural heritage sites of northeastern Sicily (Italy) is presented herein with the aim of assessing the hazard arising from the unstable conditions of the rock cliff of Taormina city, upon which the Saracen Castle is perched on its top. Several rockfalls affected this area in the latest years, representing a serious threat for the safety of inhabitants and tourists. Therefore, the qualitative Evolving Rockfall Hazard Assessment (ERHA) was applied for the hazard zonation, supported by rock mass surveys and Terrestrial Laser Scanner prospecting. Kinematic analysis revealed that the unstable rock failure patterns are represented by planar/wedge sliding and toppling, while simulation of potential rockfalls allowed studying the impact of future events in terms of trajectory and energy. This is higher at the foot of scarps and in steeper sectors, where the application of ERHA identified a critical zone close to the inhabited center, which is one of the main elements at risk, along with a pedestrian tourist path. Achieved results represent a starting point for the definition of risk management strategies and provide a scientific contribution to the study of hazard and risk arising from rockfall occurrence.

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Quantitative risk assessment of slope hazards along a section of railway in the Canadian Cordillera—a methodology considering the uncertainty in the results

Cited by 60 publications

References 17 publications

Rockfall forecasting and risk management along a major transportation corridor in the Alps through ground-based radar interferometry

Rockfall forecasting and risk management along a major transportation corridor in the Alps through ground-based radar interferometry

Brief communication: On direct impact probability of landslides on vehicles

Rockfall Analysis for Preliminary Hazard Assessment of the Cliff of Taormina Saracen Castle (Sicily)

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