Rockfall Hazard and Risk Assessment Along a Transportation Corridor in the Nera Valley, Central Italy

Rockfalls are a common type of fast-moving slope failures, and in many countries they represent the primary cause of landslide fatalities. We present a methodology to ascertain rockfall hazard and to determine the associated risk along transportation networks. The proposed methodology is based on th...

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Veröffentlicht in:Environmental management (New York) Jg. 34; H. 2; S. 191 - 208
Hauptverfasser: Guzzetti, Fausto, Reichenbach, Paola, Ghigi, Silvia
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York, NY Springer 01.08.2004
Springer Nature B.V
Schlagworte:
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Conservation, protection and management of environment and wildlife
Disaster Planning
Disasters
Environmental hazards
Environmental management
Environmental Monitoring
Fundamental and applied biological sciences. Psychology
General aspects
Geographic information systems
Geological Phenomena
Geology
Humans
Italy
Landslides
Remote sensing
Risk Assessment
Studies
Transportation
Italy
Europe
Corridor
Risk analysis
Environmental management
Transportation
Hazard
ISSN:0364-152X, 1432-1009
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Zusammenfassung:Rockfalls are a common type of fast-moving slope failures, and in many countries they represent the primary cause of landslide fatalities. We present a methodology to ascertain rockfall hazard and to determine the associated risk along transportation networks. The proposed methodology is based on the combined analysis of the recurrence of rockfall events, determined from historical information, the frequency-volume statistics of rockfalls, obtained from inventories of recent rockfall triggering events, and the results of a physically based, spatially distributed rockfall simulation model used to determine rockfall hazard. The available information on rockfall hazard is combined in a Geographic Information System with a map of the transportation network to identify the road sections potentially subject to rockfalls. Information on the location and type of rockfall defensive measures, including revetment nets, elastic fences, concrete walls, and artificial tunnels, is used to estimate the efficacy of the defensive structures and to determine the level of the residual rockfall risk along the roads. To illustrate the methodology, we discuss an application in a 48-km2 area in the Nera River valley, in the Umbria Region of central Italy, where rockfalls are abundant, and where considerable investments were recently made to mitigate rockfall risk.
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ISSN:0364-152X
1432-1009
DOI:10.1007/s00267-003-0021-6