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Seismically-induced landslides in Chile: New tools for hazard assessment and disaster prevention

智利地震引发的山体滑坡：灾害评估和灾害预防的新工具

基本信息

批准号：
NE/N000315/1
负责人：
David Neil Petley
金额：
$ 19.88万
依托单位：
University of East Anglia
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FN000315%2F1
关键词：
Seismically induced landslides Chile New

项目摘要

Landslides are a major source of fatalities and damage related with strong earthquakes, particularly in mountain areas. Forecasting the distribution and impact of landslides induced by earthquakes is one of the greatest challenges in the earth sciences. The behavior of slopes during seismic excitation is exceptionally complex, being dependent upon geological, geomorphological, geotechnical and seismological factors. This project aims to identify the main characteristics of landslide occurrence during strong earthquakes in Chile, improving the understanding of their mechanics, spatial distribution and controlling factors, obtaining quantifiable inputs for the development of a methodology for earthquake-induced landslide hazard assessment. This will be achieved through compiling and analyzing inventories for two Chilean earthquakes (Aysén 2007 and Maule 2010) to be compared with foreign landslide inventories; running a laboratory testing scheme in UK for better understanding of the mechanical causes of seismic slope failure; and applying those results on the development of a method for assessing the seismic stability of slopes in Chile. The new methodology will be verified in the Santiago region, which presents the highest population of the country and where an active fault has been recently discovered (San Ramón Fault). The outputs will include scientific publications, advanced human resource training as well as a new technique of hazard assessment applicable to urban/territorial planning and natural disaster prevention strategies in the country.

山体滑坡是与强烈地震有关的死亡和破坏的主要来源，特别是在山区。预测地震引发的滑坡的分布和影响是地球科学中最大的挑战之一。斜坡在地震激励下的行为异常复杂，取决于地质、地貌、岩土工程和地震因素。该项目旨在确定智利强震期间滑坡发生的主要特征，提高对其力学、空间分布和控制因素的了解，为制定地震引发的滑坡危险评估方法提供可量化的投入。这将通过以下方式实现：汇编和分析智利两次地震(Aysén 2007和Maule 2010)的清单，将其与国外的滑坡清单进行比较；在英国开展实验室测试计划，以更好地了解地震斜坡破坏的力学原因；并将这些结果应用于制定智利斜坡地震稳定性的评估方法。新的方法将在圣地亚哥地区得到验证，圣地亚哥地区是该国人口最多的地区，最近在那里发现了一条活动断层(圣拉蒙断层)。这些成果将包括科学出版物、高级人力资源培训以及适用于该国城市/领土规划和自然灾害预防战略的新的危险评估技术。