Assessment of Risk due to Debris Flow Events
- 1 August 2003
- journal article
- research article
- Published by American Society of Civil Engineers (ASCE) in Natural Hazards Review
- Vol. 4 (3), 115-125
- https://doi.org/10.1061/(asce)1527-6988(2003)4:3(115)
Abstract
The traditional approach to hydraulic engineering problems, such as the designing of dams or embankments or, specifically in the case of consideration, the designing of a settling basin for debris flows, is deterministic and uncertainties are not explicitly considered in the evaluation of the designed structure. Nowadays some effort is made to consider phenomena in a probabilistic rather than deterministic framework, in order to respond clearly to the demand for reliability. In this paper, failure, damage, and risk are exemplified for a debris-flow prone basin and considerations on the acceptable amount of risk are presented. The evaluation of debris flow hazard is carried out for a specific site (Acquabona, Italy). The standard methodology used to perform a risk assessment analysis is applied. All relevant failure modes are represented by failure functions and each of the function’s variables is described by a statistical distribution; all relevant uncertainties are included in a Level II probabilistic c...Keywords
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