OUR AMA ZING FACILITIES
Brand new classroom facilities are part of the Alan Bauer Explosives Laboratory.
Controlled destruction O
scar Rielo checks weather conditions before squinting upward at gaps in the cloud cover. The neighbours are more likely to be disturbed by the detonations when it’s overcast because shockwaves bounce back at the ground from the underside of the cloud deck. Rielo is senior program coordinator at the Robert M. Buchan Department of Mining at Queen’s. He oversees operations at the Alan Bauer Explosives Laboratory under the supervision of Mining Engineering Professor Dr. Takis Katsabanis. The site is a 160-hectare patch of land about an hour north of Kingston. The lab is used for instructing students in blasting technology and instrumentation and for conducting research related to explosives and fragmentation. The site is equipped with blast chambers of different sizes, as well as the instrumentation needed to record detonation properties, post detonation fumes, vibration, air blast, shock wave propagation and the effects of shock waves on materials. There’s even equipment for drilling holes in rock. It’s a rare resource among universities in the world and allows the performance of realistic tests to assist blast optimization. Today about 15 Queen’s mining engineering students are here to collect data for their third-year drilling and blasting course. They’re clustered in small groups in the building behind Rielo calculating, measuring and mixing
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THE COMPLETE ENGINEER
recipes to obtain the perfect ratio. “They’re learning how to mix proportions for a commercial explosive called ANFO,” says Rielo. “It’s used right now for about 80 per cent of blasting in the mining industry.” As each batch of ANFO is completed, students pack it into short lengths of steel pipe. There will be a total of seven shots, called confined charges, of varying mixtures in pipes of different diameters. Once the charges are packed, students carry them carefully to the blasting area.
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bunker. As far as safety permits, the mood is light and fun. When a big one goes off, it raises a “Woah!” of exhilaration from the students inside the bunker. Rielo collects, saves and refines the data from the sensors as the students wire up the
Equipment/features list: > 3 blasting chambers > Classroom with audiovisual
equipment
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It’s a rare resource among
universities in the world and allows the performance of
realistic tests to assist blast optimization.
Each shot is wired in its turn with a velocity-of-detonation sensor, a primer and a detonator. Each is buried in a sandy pit and detonated remotely from a
> High speed data acquisitions > Vibration monitors > Noise compliance monitors > Pressure sensors > High speed cameras > Gas analyzer > Oscilloscopes
Principal investigators include: Dr. Takis Katsabanis Oscar Rielo
