Landslide triggering, mobility, and monitoring in a changing climate

气候变化中的山体滑坡触发、移动性和监测

• 批准号: RGPIN-2020-04077
• 负责人: Take, William
• 金额: $ 3.13万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=739654
• 关键词: Landslide; triggering; mobility; monitoring; changing

Research conducted to assess Canada's vulnerability to continued climate changes indicates that: a) all of Canada is projected to get warmer in the future, even under a low-carbon scenario, b) Canada's Artic will warm much faster than Canada's South, and c) Southern Canada is projected to get much wetter throughout the spring, fall, and winter months, but much drier in the summer. These changes in temperature and moisture have the potential for profound impacts on the stability of the soil slopes supporting highways, railways, containing pipelines, or forming the dams that retain the waste from Canada's mining industry. Research is urgently needed to define the role of climate in the mechanics of triggering of instability, impact of climate on the mobility of the debris, and to develop innovative new monitoring tools to observe and manage the effect of climate on the geotechnical components of our infrastructure. Complementary projects of the next five years will  a) Define the fundamental physics working together to lead to the triggering of liquefaction in the failure of tailings dams, during rainfall-induced landslides, and within submarine landslide flow failures b) Explore the micromechanics defining the shear properties of dry and saturated granular flows, widely-graded debris flows, and liquefied soil to define how climatic factors such as water availability influences the velocity and maximum distal reach of the debris. c) Develop and apply cutting-edge image analysis and distributed fiber optic strain measurement technologies to analyse seasonal degradation of railway track geometry and accumulation of axial and flexural strains in pipelines in response to climate-driven landslide motion to define safer and more cost effective mitigation measures. The work will introduce new methods of analysis, experimental techniques, and data to validate numerical modelling outcomes, and will influence or define Canadian & international scholarship and design practices for these problems. Canada's large and successful engineering service consulting industry is made possible by access to highly qualified personnel with qualifications at the MSc level or higher. This proposal aims to train a total of 17 HQP (3 PhD, 9 Research MSc, 5 UG) to become Canada's future leaders in understanding and mitigating the effects of climate change on the geotechnical engineering components of our Civil Engineering infrastructure. The four undergraduate HQP listed in the proposal are a continuation of a highly successful and proven strategy to recruit outstanding candidates from under-represented groups into graduate studies in Civil Engineering at Queen's University.

进行的研究是为了评估加拿大持续气候变化的脆弱性，表明：a）所有加拿大预计将来都会变得温暖，即使在低碳情景下，b）加拿大的艺术品也将比加拿大南部的南部快得多，而c）加拿大南部预计将在整个春季，秋季，秋季和夏季的驾驶员中更加湿润。这些温度和水分的变化可能会对支撑高速公路，铁路，装有管道的土壤插槽的稳定性产生深远的影响，或者形成保留加拿大采矿业废物的大坝。迫切需要进行研究，以确定气候在触发不稳定性的机械中的作用，气候对碎屑活动性的影响以及开发创新的新监测工具，以观察和管理气候对我们基础设施的岩土成分的影响。接下来五年的互补项目将a）定义基本物理学共同工作，以导致尾矿大坝失败触发液化，在降雨引起的陆上滑坡上以及在海底滑坡流量失败中b）探索探索的微型机制，从随着水的可用性影响碎屑的速度和最大远端覆盖率。 c）开发和应用最先进的图像分析和分布式光纤应变测量技术，以分析铁路轨道几何形状的季节性退化以及管道中轴向和弯曲菌株的积累，以响应气候驱动的陆滑运动，以定义更安全和更具成本有效的缓解测量。这项工作将介绍新的分析方法，实验技术和数据，以验证数值建模结果，并影响或定义了​​这些问题的加拿大和国际科学和设计实践。加拿大大型工程服务咨询行业可以通过在MSC级别或更高水平的资格上获得高素质的人员来实现。该建议旨在培训17个HQP（3博士学位，9个研究MSC，5 UG），以成为加拿大未来的领导者，以理解和减轻气候变化对我们土木工程基础设施的岩土工程组件的影响。该提案中列出的四个本科生HQP延续了一项非常成功且经过验证的战略，旨在招募来自代表性不足的团体的出色候选人进入皇后大学土木工程研究生研究。