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Characteristics of large low-frequency debris flow hazards and mitigation strategies

Characteristics of large low-frequency debris flow hazards and mitigation strategies A low-frequency debris flow took place in the north coastal range of Venezuela on Dec. 16, 1999, and scientists all over the world paid attention to this catastrophe. Four characteristics of low-frequency debris hazard are discussed: long return period and extreme catastrophe, special rare triggering factors, difficulty in distinguishing and a series of small hazards subsequent to the catastrophe. Different measures, such as preventing, forecast — warning, engineering, can be used for mitigating and controlling the catastrophe. In engineering practice, it is a key that large silt-trap dams are used to control rare large debris flow. A kind of low dam with cheap cost can be used to replace high dam in developing countries. A planning for controlling debris flow hazard in Cerro Grande stream of Venezuela is presented at the end of this paper. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Mountain Science Springer Journals

Characteristics of large low-frequency debris flow hazards and mitigation strategies

Wang, Shige
Journal of Mountain Science , Volume 2 (1) – Mar 1, 2005
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References (3)

Publisher
Springer Journals
Copyright
Copyright © Institute of Mountain Hazards and Environment, CAS(IMHE) and Science Press 2005
Subject
Environment; Environment, general
ISSN
1672-6316
eISSN
1993-0321
DOI
10.1007/s11629-005-0050-0
Publisher site
See Article on Publisher Site

Abstract

A low-frequency debris flow took place in the north coastal range of Venezuela on Dec. 16, 1999, and scientists all over the world paid attention to this catastrophe. Four characteristics of low-frequency debris hazard are discussed: long return period and extreme catastrophe, special rare triggering factors, difficulty in distinguishing and a series of small hazards subsequent to the catastrophe. Different measures, such as preventing, forecast — warning, engineering, can be used for mitigating and controlling the catastrophe. In engineering practice, it is a key that large silt-trap dams are used to control rare large debris flow. A kind of low dam with cheap cost can be used to replace high dam in developing countries. A planning for controlling debris flow hazard in Cerro Grande stream of Venezuela is presented at the end of this paper.

Journal

Journal of Mountain Science – Springer Journals

Published: Mar 1, 2005

Keywords: Low-frequency debris flow; mitigation strategies

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