mine sublevel caving

Mar 24, 2021· Sublevel caving: unearthing new opportunities . The known resource base for base metals is increasingly comprised of large scale, low-grade deposits, situated at increasing depths where underground cave 1 mining methods are the only viable means of economic extraction.. In the spectrum of underground mining methods, caving methods are the lowest cost and most productive.

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Sublevel caving method without sill pillar is a kind of mining methods that present underground mine is most widely used.This method is compared with other mining methods, have simple in structure, flexibility is big, does not need pillar, and the mining preparation work amount is little, process for stoping is simple, rock drilling voluntarily, carrier loader efficiently easy to use, work ...

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Aug 04, 2010· The world's largest sublevel caving mine is located above the Arctic Circle in Sweden. The Kiruna Mine is mining the Kirunavaara iron orebody. (See figure below.) This mine is famous not only for its size and longevity, but it has been a hotbed of innovation for mining …

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Abstract: LKAB has been mining iron ore with the sublevel caving mining method in northern Sweden for more than 60 years. Throughout the years, LKAB has improved this mining method to stay competitive in a tough international iron ore market. Improvements in drilling and blasting technology have helped LKAB increase the scale of sublevel caving and therefore decrease its mining costs in ...

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Mar 16, 2017· Block caving is an extreme case of sublevel caving in which instead of a back of ore 5 to 10 ft. thick, one 50 ft. thick is undermined and allowed to cave. The method is illustrated in Fig. 7. After the bottom of the block, or panel, is cut up into pillars by drift's and cross drifts, the pillars are robbed, and then the remaining stumps are ...

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Aug 11, 2021· Newcrest has significant experience with bulk underground mining, and in Australia currently operates the Telfer mine using the sublevel caving mining method and the Cadia mine using block/panel caving mining methods. Corporate Profile.

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Oct 01, 2020· Cave mining enables higher automation and mechanisation: ... His experience has been largely in the areas of block and sublevel caving, it includes both feasibility studies and operating mines. Other areas of specialisation includes geological modelling, resources and reserve evaluation, mine planning and project evaluation. ...

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Oct 02, 2013· Sublevel caving: Engineered to Perform. Sub-level caving is a highly efficient, top-down, underground bulk mining method. Recent developments in sub-level cave mining have advanced the understanding of the technique and its production performance, which allow it to now be considered as a highly viable alternative to open stoping and, in some ...

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Specific examples of cave mining techniques include block caving, panel caving, inclined-drawpoint caving, cut and fill mining, shrinkage stopping, sublevel longhole mining, room-and-pillar mining and front caving. Cave mining is typically used to mine copper, copper-gold, iron and molybdenum. It can also be used in the extraction of kimberlite ...

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Description. This method is usually considered as an alternate to sublevel caving when a lower dilution method is needed and where the rock is fairly competent. The production for a mine using sublevel stoping can range from 15- 40 tons/employee-shift, while …

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Jun 25, 2010· Sublevel caving techniqueSimplicity and low cost are the essence Development * Significant. Almost 20% of the ore is mine during development * Sublevels are …

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Apr 03, 2017· Mining by Sublevel Caving. In sublevel caving, relatively thin blocks of ore are caused to cave by successively undermining small panels. The ore body is developed by a series of sublevels usually spaced at vertical intervals of 18 to 25 or 30 feet (more recently, intervals of …

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Mar 03, 2017· The wall caving is induced by mining the ore in controlled sequence, usually from hanging wall to footwall and from top to bottom. Sublevel caving is often used in conjunction with surface mining. Sublevel caving extracts the ore via sublevels, which are developed in …

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Other articles where Sublevel caving is discussed: mining: Sublevel caving: This method owes the first part of its name to the fact that work is carried out on many intermediate levels (that is, sublevels) between the main levels. The second half of the name derives from the caving of the hanging wall and…

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the sublevel cave mining process should promote rnaximizing both these parameters. Results from the underground operatioos conciuded that fragmentation is of key importance to sublevel cave stope. Proper fiagmentation of the ore column resulted in improved eEciency for the other mine operations aml was critical to recovery. Underground observations

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Sublevel Caving Block Caving ... Basic issues of geomechanical to the black caving method: 1) Caveability 2) Mine design 3) Fragmentation and extraction control 4) Subsidence associated

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Oct 23, 2014· Caving Underground Mining Methods (longwall, Sublevel caving, & Block caving) 1. This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.

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Topic 7: Underground Mining Methods Longwall Sublevel Caving Block Caving Hassan Z. Harraz [email protected] 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.

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As a cave mining expert, Jarek has worked on most of the world's caving and sublevel caving projects. He has participated in several international mines, developed a planning tool for sublevel caving mines and has lectured on cave mining on five continents. and 80,000 ounces of gold over a 12 year mine …

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The paper expounds results gained in mathematical modeling of stress state of a rock mass under mining by sublevel caving with areal-frontal and frontal ore drawing schemes. Stability of underground excavations in the course of applying the compared methods is evaluated in terms of the Sheregesh deposit. The authors recommend on supporting the openings at the ore drawing-off level.

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Aug 09, 2021· Production scheduling determines the most beneficial mining sequence over the life of a mine. Developing a schedule that meets all mining aspects can substantially reduce mining costs and increase profitability. Among all underground mining methods, the sublevel caving method is a common method with moderate development requirements, a high production rate, and a high degree of …

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Summary: South Range contact-type Ni-Cu deposits are similar to those of the North Range. They occur at the base of the SIC in the sub-layer and include the Creighton Mine and Stobie Mine orebodies, Murray Mine Main Orebody and the Blezard Main Orebody. The South Range Footwall Breccia underlies the sub-layer and is derived from melanocratic ...

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The current mining methods employed in the Kazansi Mine include mechanised open stoping, sublevel caving and stope preparation, which account for 60, 30 and 10% of the total ore production, respectively (Anon, 2006).Open stoping is the preferred mining method when there is consistent gold distribution, regular ore boundaries, where the dip is ...

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Oct 02, 2013· Sublevel caving: Engineered to Perform. Sub-level caving is a highly efficient, top-down, underground bulk mining method. Recent developments in sub-level cave mining have advanced the understanding of the technique and its production …

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Sublevel Caving (SLC) was selected as the mining method for the underground portion of the deposit based on the amenable geometry of the deposit, and because productivity and cost advantages of SLC enable greater exploitation of the underground resource at greater margin than more selective mining methods, Atlantic Nickel said.

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Nov 22, 2019· Sublevel caving is a large scale mining method, suitable for large ore bodies with a steep dip and a rock mass where the host rock in the hanging wall will f...

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May 28, 2021· Raise caving, as opposed to sublevel caving, is a method that enables mining of the orebody from bottom to top, instead of from top to bottom. In other words, the sequence is reversed, and the technology shift has several advantages, not least in terms of safety.

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significant problem in the mining industry today, so a mining method such as caving that has a low reliance on skilled labour pools can be an interesting factor for mining companies to consider. Otto Richter, principal consultant at Snowden, says: "The recent interest in www. .com June 2012 "Caving is the only underground bulk mining method

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