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Management of Combined Natural Risks-application to Earthquake-triggered Landslide Dams

机译:自然风险综合管理-地震触发滑坡大坝的应用

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1 Introduction The management of natural hazards and risks has become a challenging and dramatically increas-ing task. Natural risks are defined to have two components: (1) the hazard (the probability of a major natural event) and (2) the vulnerability of human settlements and installations. Without this clear dis-tinction no real risk assessments can be performed. In engineering geology, the simple but effective formula risk=hazard x vulnerability is used. Different from other approaches, which just add hazard and vulnerabi|ity, this approach provides the great advantage that when the factor vulnerability is zero the risk is zero too even at conditions of very high hazards. The most effective countermeasure against natural risks is the use of risk maps. They are able to provide the necessary basic information to the planners and decision makers to reduce the impacts of the natural threats. Numerous types of geologic, geo-environmental, or engineering geologic maps have been developed during the past decades to cover natural risks. Most of these maps concentrate on one single hazard (e. g. Hanneberg et al. 2002).
机译:1简介对自然灾害和风险的管理已成为一项具有挑战性且急剧增加的任务。自然风险的定义包括两个部分:(1)危害(重大自然事件的可能性)和(2)人类住区和设施的脆弱性。没有明确的区分,就无法进行真实的风险评估。在工程地质中,使用简单但有效的公式:风险=危险x脆弱性。与仅增加危害和脆弱性的其他方法不同,该方法具有很大的优势,即当因子脆弱性为零时,即使在非常高的危害条件下,风险也为零。应对自然风险最有效的对策是使用风险图。他们能够为计划者和决策者提供必要的基本信息,以减少自然威胁的影响。在过去的几十年中,已经开发了多种类型的地质,地理环境或工程地质图,以涵盖自然风险。这些图大多数都集中在一种危害上(例如Hanneberg等,2002)。

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