CEMI publishes results of six-year research program
SUMIT Program Journal available for downloading
A 112-page program journal reporting on the results of the Smart Underground Monitoring & Integrated Technologies (SUMIT) research program is available for downloading on the Centre for Excellence in Mining Innovation (CEMI) website.
The $6.7 million research program was managed by CEMI and led by Laurentian University in partnership with Queen’s University and the University of Toronto with contributions from the University of Waterloo, the University of Alberta, the University of British Columbia and Carleton University and support from Vale, Glencore’s Sudbury Integrated Nickel Operations, Rio Tinto and the Ontario government.
SUMIT included 20 projects focusing on ground control, mine construction and energy optimization for deep mines.
“The research program began to take shape in 2009 when industry approached us with a problem they had with fault slip caused rockbursts,” said Damien Duff, CEMI’s former vice-president for geoscience and geotechnical R&D who oversaw the program. “The incidence of fault slip caused rockbursting in our mines is growing – largely because mines are getting deeper,” he told Sudbury Mining Solutions Journal at the conclusion of the program last year. “As they get deeper, mining induced seismicity increases and risks associated with that – including fault slip rockbursting – are likewise increasing.”
Researchers at Laurentian University produced guidelines and operating practices for the selection of underground support systems in dynamic ground conditions, as well as a Burst Support Tool that will help rock engineers determine the best combination of ground support for specific geotechnical conditions.
One PhD student developed a better understanding of seismic wave forms, or ray paths, how they travel through a rock mass and how they’re affected by major structures or openings. Another student working under the direction of principal investigator Peter Kaiser developed a better understanding of how structures and rock masses that are buried deeply and subject to overhead load contribute to the likelihood of ground failure.
Researchers at Queen’s University developed ways to understand rock mass change over time as a result of mining induced stresses, and used LiDAR surveying to estimate the far field stresses impacting on rock mass changes.
At the University of Toronto, researchers succeeded in demonstrating the use of geophysics to monitor rock mass behaviour and developed a new sensor – a fiber optic-based strain measurement device to measure deformation.
Mira Geoscience, another participant in the SUMIT research program, developed a data management system called Geoscience Integrator to bring together disparate data sets for geohazard assessment.
Work at Laurentian University on energy efficiency resulted in software tools to audit energy use and reduce waste.
Research was also conducted on optimizing the effectiveness of ice stopes and natural heat exchange areas for mine cooling and on the use of hydraulic air compressors.
CEMI partnered with the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) to publish the SUMIT Program Journal.