22 October 2019 | Palladium Ballrooms North & Centre,
The Radisson Hotel,Sudbury, Canada
Paper presented by A.J. Hyett.
Conceptual Framework for Unlocking of Value from Extensometer Data
Abstract:
Autonomous instruments measuring ground movements and rock support loading can detect large numbers of micro-Damage Events (mDEs) that are otherwise too small to be observable. In the temporal domain, mDEs are characterized by elevated rates of ground move ment/support loading which are associated with mining induced stimuli: typically blasting and micro-seismic events. Subsequent and sometimes ongoing time-dependent deformations are also measured. The magnitudes of the measured mDEs can be correlated with factors such as the local Stress Factor around excavations and pillars, and the Scaled Distances of the blast or seismic stimuli. During the mining cycle, prior accumulation of mDEs, within the excavation damage zone, raises “Excavation Vulnerability” with respect to both planned and unplanned future stimuli.
A.J. Hyett: Time Dependency: An Inconvenient Truth. 20 years of monitoring rock displacement in mines.
presented 2015
B.J. Forbes: Improving Ground Support Design with Distributed Strain Monitoring. Geomechanics Group, Queens University
presented 2015
B.J. Forbes: MASC thesis presentation: The Application of Distributed Optical Sensing for Monitoring Support in Underground Excavations
presented 2015
Distributed Optical Sensing in Mining Application
presented 2013.
B.J. Forbes:Determining the Mechanistic Behaviour of Support Systems used in Underground Excavations:
Poster presentation
Guidelines and Best Practises for the Utilization of Tendon Monitoring Technology in Hard Rock Mines
presented 2013.
Yieldpoint Presentation
presented 2013.
Development of our products is a continually ongoing process. For a snapshot of how far we have progressed in the last 10 years see the presentation below.
Innovative Digital Instrumentation for Geotechnical Monitoring Systems
presented at the MEMO Conference, Sudbury, Feb 2005.