The main wire rope hoist is suitable for carrying heavy loads at relatively fast speeds and is the primary means of vertical access for men and materials in an. Wherever an elevator for inspection, emergency, or interlevel hoisting is required in mines and underground shafts, the Alimak rack and pinion elevator is the. Raise climbing, widely known as the Alimak mining method after the company that introduced it, is a variation on longhole stoping developed.
|Published (Last):||18 August 2018|
|PDF File Size:||4.15 Mb|
|ePub File Size:||5.77 Mb|
|Price:||Free* [*Free Regsitration Required]|
Cable bolting provides better ground support from its position in the central hangingwall of the stope, and the broken ore adds support by putting outward mkning on raise walls. Our full team of experienced Raise Miners, Supervisors and Managers, ensure your project is carried out meticulously, while meeting all budget and time constraints. The Alimak elevator is the perfect solution for underground as well as aboveground mining industry applications, such as pelletising plants, smelters, concentrators, and other ore processing plants.
They blast the first qlimak metres of the raise and then install a climber running on a curved rail from the nest into the raise. There is often considerably less waste development with raise mining than with regular open stoping. Raise climbing, widely known as the Alimak mining method after the company that introduced it, is a variation on longhole stoping developed for narrow-veined, tabular ore bodies.
It is often best to leave ore in the stopes while blasting because of the support it gives.
alimka The climber holds two to three people and the drilling and blasting equipment they need. Customer profitability In a ‘time is money’ world, we ensure customers get materials and personnel transported higher, faster and safer.
The raise mining method takes advantage of this concept because, even though the hangingwall alijak only supported up its centre, the resulting two unsupported strips are long and narrow and are more likely to be self-supporting. Minibg Fill fence and piping if required. The production drill sits in the middle of its work, cutting the drilled length in half.
Other improvements have allimak on the climber end. The installed support is also enhanced by the broken ore, which acts as dry miming while in place. Ken McKirdy, chief engineer at Manroc, says the Alimak method provides benefits beyond ore access. 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. With some exceptions, production blasting can alimsk in the quarter after raise development starts.
For more information on our Alimak production mining services, please contact us. All packed and ready to go Eavan Moore. Now a typical Alimak stope is 80 or 90 metres high and mucked more often — an improvement for grade and scheduling. Less Cost 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. Currently, we incorporate both conventional and mechanized production mining techniques, as determined by the individual requirements and overall complexity of each site.
So you put in a lot of work, but you get a lot of ore out at the end. The climber nests are always in the hangingwall.
The main wire rope hoist is suitable for carrying heavy loads at relatively fast speeds and is the primary means of vertical access for men and materials in an underground mine. 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 mijing open stoping in the same area. This is very cost effective as the raise is centred in the stope, which concentrates the support where it is needed most.
This type of mining is best suited to tabular narrow vein ore alimqk with enough dip for gravity ore flow. After each round of blasting, the broken ore falls down the raise and is collected by a scooptram.
There are several explanations, which include: Successful users of the technique have found that it accelerates their path to production by centring development work within the ore body. Proven benefits and outside financial pressure push modular construction into the mining mainstream.
Raise (mining) – Wikipedia
Mining narrow ore bodies is vital to the international mining industry, and involves a high level of expertise surrounding geological issues. We are pleased to provide lateral mine development as a part of our comprehensive range of underground mining services. A ramp is not required and, in many cases, neither is the muck pass and ventilation raise of a regular stoping system. Gallery Click on the photos below for a larger view: Experience has shown that raises from 75 to metres length are the most economical.
This allows the drill planning to be done before the production drill is set up in the raise.
Faster Overall Extraction With better ground control, larger stopes can be taken. The graph abscissa see above figure is the hydraulic radius of the stope. The broken ore often compacts slightly, resulting an effective swell of about one third its unbroken volume. Manroc has worked with major mining firms around the world, and has built apimak solid reputation.
Raise Climber Mining Method Details The raise climber mining method will alimakk be comprised of the following steps: The production drill holes are oriented slightly down from along strike, which is also roughly perpendicular to that found in the regular open stoping method.