Methodology for geohazard assessment for hydropower projects

Fjóla Sigtryggsdóttir (), Jónas Snæbjörnsson, Lars Grande and Ragnar Sigbjörnsson

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2015, vol. 79, issue 2, 1299-1331

Abstract: The paper presents a comprehensive methodology for a multihazard assessment, including an associated multihazard monitoring programme. An existing method in system theory is extended for multiple systems and used to demonstrate the importance of considering geohazard interrelations in the safety monitoring of reservoirs and dams. The method is applied to systems of geohazards and monitoring parameters. In both systems, there is a reservoir retained by one or more dams. Geohazards in hydropower project perspectives as well as monitoring opportunities are classified. The results are presented in a colour-coded matrix visually mapping ranked interrelations for the two systems. The methodology proposed provides a clear view on the prospective that individual geohazards may trigger other geohazards as well as on the geohazard-triggering potential of the reservoir itself. The warning potential of the possible monitoring parameters is also mapped and interrelated to the individual geohazards. The results demonstrate the importance of a comprehensive multidisciplinary monitoring programme for reliable operation and risk management of hydropower projects. Copyright Springer Science+Business Media Dordrecht 2015

Keywords: Multihazard; Geohazards; Reservoir; Dam; Monitoring; System interrelations; Hazard mitigation (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1007/s11069-015-1906-4

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