The Alimak raising method consists of five steps, which together make up a cycle. The five steps are all dependent on the Raise Climber, which. ALIMAK INC. – Alimak Raise Climber. Operating height (m): . Operating width (m): Platform dimensions: m x m. Maximum length. In underground mining, a raise refers to a vertical or inclined excavation that leads from one level, or drift, to another. A raise may also extend to surface. There are four excavation methods for raises: Conventional or open raise; Long- hole or drop raise; Alimak · Raise boring.
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Specialists in Alimak Raising
cclimber As a result, raise production of only a few hundred metres per year becomes profitable with the Raise Climber. Penstocks of around m. We are your preferred underground mining professionals. Pressure shaft of m. Stopes can be as little as 3 feet thick, or even less in ideal circumstances. Fewer, larger stopes can be taken quicker because there are fewer cycles, i. Using curved guide rails the direction of travel can be rasie at any time; forward, backward, or sideways.
The hydraulic radius is defined as the cross-sectional area of the opening divided by its perimeter. Anglo Gold, South Africa: Specifications HS CODE Features Alimak Raise Climbers and shaft enlarging equipment are available for underground mining, civil engineering and hydro-electric power generation as well as for operating as inter-level service lifts. This improves drill accuracy which, in conjunction with the better ground control, reduces dilution substantially.
Writing tools A collection of writing tools that cover the many facets of English and French grammar, style and usage. Drilling, loading and blasting are all performed from the platform of the Raise Climber, which is adapted to fit the precise dimensions and shape of the raise.
Alimak Production Mining, Manroc Developments Inc.
It runs on a guide rail anchored to the hanging wall. Alimak Raise Climbers and shaft enlarging equipment are available for underground mining, civil engineering and hydro-electric power generation as well as for operating as inter-level service lifts. Intuitively, geometry favors raise climber mining, in that access is gained to the centre of the stope hangingwall where the ground support does the most good.
This should also contribute to a more aalimak hangingwall. Truck dump back slash if required.
Alimak Raising, Manroc Developments Inc.
How It Works The Alimak method raises between levels in a safe and effective manner. With better ground control, larger stopes can be taken. Furthermore, the Alimak Raise Climber implements a rack and pinion rail, designed to carry air and water for increased ventilation.
The method works best if the ore boundaries can be interpolated between adjacent raises. This is very cost effective as the raise is centred in the stope, which concentrates the support where it is needed most.
The production drill sits in the middle of its work, cutting the drilled length in half.
The platform can be any shape and size. The climbers require about 4. Access a collection of Canadian resources on all aspects of English and French, including quizzes.
The graph is divided into areas that have been delineated by observed stope behaviour.
A narrow vein ore body has less ore to soak up waste development costs, making the raise mining method an obvious choice. The main ore access is gained by driving a raise up dip along the centre of the stope hangingwall, rather than from over and under-cuts driven along strike, as is done with regular open stoping.
The sub-horizontal production drill hole direction allows the use of the undercut as a slot xlimber because of the increased stope height, there will be significantly fewer of these than ali,ak would be slots required for regular open stoping in the same area. Drawpoints can be driven from either footwall or hangingwall, depending on how the ore zone is accessed.
Two parallel pressure shafts of metres. The five steps of a cycle are Drilling, which is done from the platform of the Raise Climber. Cables can be installed right up the middle of the hangingwall, where they will do the most good.
The blasts are timed to slash down, with the footwall holes often the last to fire. In which subject field?
A ramp is not required and, in many cases, neither is the muck pass and ventilation raise of a regular stoping system. Ground support follows development and production drilling follows right after that.
Faster Overall Extraction With better ground control, larger stopes can be taken. The raise climber consists of a cage for the crew, with a working platform on top for roof scaling and drilling and charging of holes. Ore passes and ventilation shafts totalling m. Since its introduction, the Raise Climber has been developed and improved into what is now the 6th generation, the Alimak RCM-series, enabling fast, mechanized drilling of long, inclined shafts and improved working environment.
The change in geometry and improvement in ground support allows stope heights in the order of 75 to metres, eliminating many sub-levels and their associated development.
Mining Equipment and Tools. For more information on Manroc’s Alimak raising services, please contact us.
Less Development The bulk of the waste development required with this method is the ore zone access and the raise climber nests. There are several explanations, which include:. The holes are most often mechanically loaded with either ANFO or an emulsion explosive. Mining Equipment and Tools . The production drill holes are oriented slightly laimak from along strike, which is also roughly perpendicular to that found in the regular open stoping method.
Raise Climber Mining Method Details The raise climber mining method will generally be comprised of the following steps: The drifts are commonly sized to accommodate the large scooptrams used for production mucking and are often driven with jumbos.