DOI: 10.1007/s11069-020-04177-4
论文题名: An evaluation of the performance of rock fall protection measures and their role in hazard zoning
作者: Jaccard C.-J. ; Abbruzzese J.M. ; Howald E.P.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 104, 期: 1 起始页码: 459
结束页码: 491
语种: 英语
中文关键词: Hazard assessment
; Hazard zoning
; Land use planning
; Protection measures
; Rock fall
英文关键词: field survey
; hazard assessment
; land use planning
; performance assessment
; rockfall
; structural analysis
; zoning system
; Switzerland
英文摘要: Rock falls threaten human lives and assets in mountainous regions all over the world. Protection measures are one of the most effective solutions for mitigating rock fall-related hazards and risks; however, their optimal working conditions must be ensured throughout their whole life span, in order for the measures to play their role properly and not to have their performance compromised. This paper presents a methodology for a simple yet effective evaluation of the performance of existing rock fall protections, whose goal is to establish their actual performance capacity and, based on that, whether they can play their mitigation role. The methodology is articulated into four main steps. In the first, data and information about the hazard affecting a site, the current state of existing protections and possible faults/causes of malfunctioning of the protections are collected. The second and third steps evaluate the actual performance capacity of the protections in comparison with their nominal capacity, after the potential influence of the factors degrading the effectiveness, detected in the first step, is considered (i.e. factors reflecting negative interaction between site and measures, structural design issues of the protections, faults and malfunctioning due to lack of maintenance, etc.). These three steps were implemented in a spreadsheet tool, allowing to store relevant data on protection measures collected during a field survey and to perform the evaluation analysis directly on site, semi-automatically, based on the data collected. Finally, once an actual performance capacity is obtained from these evaluations, the last step of the methodology is to compare this capacity to the hazard at the site, in terms of energy and return period of the events at each location of interest, to establish whether the protections can in fact mitigate such hazard or need intervention (reparations, replacement, etc.). A detailed application of the whole procedure is shown, by means of a demonstrative example carried out at a Swiss site where rock fall protections measures were previously installed and hazard zoning maps are available. © 2020, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168542
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: School of Management and Engineering Vaud (HEIG-VD), Institute of Territorial Engineering (Insit), University of Applied Sciences and Arts Western Switzerland (HES-SO), Yverdon-les-Bains, Vaud, Switzerland; Stucki Ltd, Renens, Vaud, Switzerland
Recommended Citation:
Jaccard C.-J.,Abbruzzese J.M.,Howald E.P.. An evaluation of the performance of rock fall protection measures and their role in hazard zoning[J]. Natural Hazards,2020-01-01,104(1)