GROUND SUPPORT
Swellex , split set , resin rebar , hollow bar for bulk resin and SDA for bulk resin , so the bolts can be adjusted to fit the necessary level of ground support while considering optimal cost and speed . An Epiroc technician is onsite at Voisey ’ s Bay to resolve issues operators may have adapting to the new technology , troubleshoot potential glitches in the injection system , and advise on the best bolt types based on the ground conditions .
Voisey ’ s Bay announced first ore in June 2021 , thanks in no small part to Vale ’ s willingness to unclog its bolting bottleneck by adopting new resin technology mid-development .
Minova innovations for rock bolt grouting
Francois Charette , Minova Canada Technical Sales Manager says Minova continues to focus on the development of grouting products and systems to support safer and more efficient mining and tunnelling ground control operations . “ As originators of urea silicate resins for rock bolting , Minova ’ s CarboThix™ resin family has since been used successfully all over the world to provide grouting solutions for anchors in challenging ground conditions . The ultrafast setting time of the anchor resin provides near-immediate support for bolts and cables used in underground mining and tunnelling .”
In Canada , Minova has been extending the use of CarboThix , by providing improvements to the delivery method of post-grouted rock bolts and cable anchors . “ Additional and / or secondary support of tunnels and intersections typically requires rapid mobilisation and execution , in order not to interfere with the normal operations of the mine .”
Underground construction sites , including shafts and stations , can be relatively small scale , but nonetheless critical operations , that benefit
Minova simple pump and CarboThix tank skid mounted on scissor truck for anchor injection
from rapid execution ; they also typically provide stable openings for the duration of the mining operation . However , the processes are often more like a complex suite of steps , for which a small footprint and a nimble and flexible system is critical to the achievement of completion deadlines .
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