A cut aboveRaise climbing brings production gains to Canadian companies Raise climbing brings production gains to Canadian companies By Eavan Moore November 11, An alimak leaves its nest to climb into a raise Courtesy of Manroc Developments Inc. Three-quarters of the way into , it became clear that this was a very good year for Claude Resources. The Saskatoon-based gold miner had increased its year-to-date gold production by 63 per cent over , thanks in part to a successful implementation of the Alimak mining method at its Seabee gold mine in Saskatchewan. Successful users of the technique have found that it accelerates their path to production by centring development work within the ore body. In regular open stoping, overcuts and undercuts provide access to the ore along strike.
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Yozshutilar A Leader in Alimak Mining It was placed on care and maintenance by Golden Star, while evaluation and exploration activities continued. Nethod advantage is easily visualized if one imagines the hangingwall as a fractured beam or plate. With less development, faster ore access, better ground control, and faster overall mining, it is easy to see how raise mining will cost less than regular open stoping. All packed and ready to go Eavan Moore. Fill fence and piping if required.
A true innovation in underground mining, the Alimak method provides the highest safety standards in the industry, while increasing productivity, adding greater flexibility and maneuverability, and reducing overall mining costs. For more information on our Alimak production mining services, please contact us. That was the main attraction for Claude Resources, which introduced the Alimak method in its L62 zone at Seabee in late The double railing forms the backbone of the system: The sub-horizontal production drill hole direction allows the use of the undercut as a slot and because of the increased stope height, there will be significantly fewer of these than there would be slots required for regular open stoping in the same area.
The advantages of this mining method are: These drifts are driven from the shaft or established mining areas to the new ore zone. An alimak leaves its nest alimam climb into a raise Courtesy of Manroc Developments Inc.
Canmet representatives spent time observing SAMS in use and interviewed mine workers about their experience using the system. Manroc Developments is a full service mine engineering company employing a highly qualified team of mining engineers and associates with extensive experience in alimao mining.
Our longhole stopes are approximately 5, to 10, tonnes, whereas the Alimak stopes are alimaak from 20, to 30, tonnes. Maxwell Adombila Akalaare 22 September Better Ground Control Cables can be installed right up the middle of the hangingwall, where they will do the most good.
Faster Access to Undeveloped Ore Once the climber nests are established, ore starts to flow. This includes the telescopic platform from which the miner controls the system. This type of mining is best suited to tabular narrow vein ore bodies with enough dip for gravity ore flow. Recognized as a leader in Alimak LH narrow vein stope mining, Manroc has developed proven and effective techniques yielding high tonnage and low dilution results.
The company had earlier stated that gold production was expected to resume at the Prestea concession by mid after going through successful redevelopment over the last 2 years. There is often considerably less waste development with raise mining than with regular open jining.
The hydraulic radius is defined as the cross-sectional area of the opening divided by its perimeter. They blast the first few metres of the raise and then install a climber running on a curved rail from the miming into the raise. There are several explanations, which include: Cancel reply Your email address will not be published.
That means less development in waste rock and a reduction in costs. The production drill sits in the middle of its work, cutting the drilled length in half. The blasts are timed to slash down, with the footwall holes often the last to fire. Less Cost With less development, faster ore access, better ground control, and faster overall mining, it is easy to laimak how raise mining will cost less than regular open stoping.
Raise climbing brings production gains to Canadian companies. Typically, the angle results in slow development, low productivity and difficult work flow. Where required, the stope hangingwall can be supported with deformed strand resin-grouted cable bolts in a regular pattern along the raise. The mining method at Beaufor is currently long-hole and room and pillar, but Beauvais is hopeful that Richmont minning adopt SAMS once the technology is commercial.
The stopes can also be mined in a shrinkage fashion, with added support gained from the broken ore in place. Avoiding repeat levels has slight time-saving effects during operation because it eliminates the further work, like fencing backfill, needed on each level. TOP Related Posts.
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Contact Us Alimak Production Mining A true innovation in underground mining, the Alimak Mining Method provides high safety standards while increasing productivity, adding greater flexibility and reducing overall mining costs. The Alimak Mining Method Orebody Requirements This type of mining is best suited for tabular narrow vein orebodies, with enough dip to allow for gravity-led ore flow. Experience has shown that raises from 75 to metres length are the most economical. Results are even more favourable when the ore boundaries can be interpolated between adjacent raises, allowing drill design to be adjusted as required. Raise Climber Mining Method Details The raise climber mining method will generally be comprised of the following steps: Lateral Development Bottom Sill: These drifts are driven from the shaft or established mining areas to the new ore zone. The drifts are commonly sized to accommodate the large scooptrams used for production mucking.
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