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A portable brittle fracture monitoring facility

一种便携式脆性断裂监测装置

基本信息

批准号：
389771-2010
负责人：
Stead, Douglas
金额：
$ 9.54万
依托单位：
Simon Fraser University
依托单位国家：
加拿大
项目类别：
Research Tools and Instruments - Category 1 (<$150,000)
财政年份：
2009
资助国家：
加拿大
起止时间：
2009-01-01 至 2010-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=443011
关键词：
portable brittle fracture monitoring facility

项目摘要

Monitoring brittle fracture processes is important in a wide variety of geotechnical environments and materials. Reliability in the design and performance of rock and soil excavations, both surface and underground, has significant implications for society in terms of safety and economics. A portable brittle fracture monitoring facility will use the characteristics of acoustic emissions to aid in our understanding of failure mechanisms in both field and laboratory environments. The monitoring/characterization of rock slope instability and associated brittle fracture/damage mechanisms will be undertaken at varying scales including highway cuts, quarries, surface mines and large open pits (up to a km in depth). The portable brittle fracture monitoring instrumentation system will be used underground to monitor pillar, roof and floor performance and the development of progressive damage in a range of mine environments. Fundamental studies on the brittle fracture monitoring of materials both in the laboratory and in the field will also be highly relevant to rock mechanics studies associated with natural hazards (landslides, subsidence, vulcanicity, earthquakes) and resource geotechncs. The portable brittle fracture monitoring equipment will be incorporated into existing LiDAR, ground based InSAR, photogrammetry, survey and geophysical instrumentation in order to form an integrated multi-component brittle fracture/rock mass characterization facility. The results of this system will be used to constrain numerical monitoring using state-of-the art numerical codes and visualized/interpreted using a large scale 3D graphics platform

在各种岩土环境和材料中，监测脆性断裂过程是很重要的。地表和地下岩土开挖的设计和性能的可靠性，在安全和经济方面具有重大的社会意义。便携式脆性断裂监测设备将使用声发射的特性来帮助我们了解现场和实验室环境中的失效机制。将在不同的尺度上监测/描述岩坡的不稳定性和相关的脆性断裂/破坏机制，包括公路路基、采石场、露天矿和大型露天矿坑(深度可达一公里)。便携式脆性断裂监测仪器系统将在井下用于监测矿柱、顶板和底板的性能以及在一系列矿山环境中的渐进破坏发展情况。实验室和现场材料脆性断裂监测的基础研究也将与与自然灾害(滑坡、塌陷、火山作用、地震)和资源岩土技术有关的岩石力学研究高度相关。便携式脆性断裂监测设备将整合到现有的激光雷达、地面干涉合成孔径雷达、摄影测量、测量和地球物理仪器中，以形成一个综合的多组分脆性断裂/岩体表征设施。该系统的结果将被用来使用最先进的数字代码来约束数值监测，并使用大规模3D图形平台来可视化/解释