sublevel caving mining method

2020-11-04T08:11:30+00:00
  • Sublevel caving Britannica

    method of underground mining In 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

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  • Sublevel Caving Technique Mining Drilling Rig

    1. Introduction - Sublevel caving is usually carried out when mining of the orebody through an open pit method is no longer economically feasible.

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  • Sublevel cave mining: unearthing new opportunities ...

    Historically sublevel caving has been perceived as a mining method that was prone to excessive dilution and poor recovery, and these issues negated the benefits.

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  • Sublevel caving - ScienceDirect

    The sublevel caving method is characterized by a gravity flow of lumpy material because both the blasted ore and the waste may contain large lumps of over 400 mm. To optimize the production of clean ore and to minimize contamination by waste as well as ore losses, it is necessary to determine the optimum parameters of the slice.

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  • Caving Underground Mining Methods (longwall, Sublevel ...

    Oct 23, 2014  Development in Sublevel Caving  The method requires significant development, being part of ore (in high producing mines, 6% of the total ore mined comes from developing).  The cost / ton of ore in the development is several times higher than in production.

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  • Sublevel Caving - Oraee

    Caving Mining Methods. Generally, caving methods extract ore, using the principle of fracturing the ore body and the rocks around it, inducing breaks in the whole strata and hence drawing the manageable ore, under more or less controlled conditions. ... Sublevel Caving. In this method, the stope is divided into sublevels, fairly close to each ...

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  • SUBLEVEL CAVING TECHNIQUE by Partha D Sharma - Issuu

    Jun 25, 2010  Description of sublevel caving method – An underground mining method used in large, steeply dipping orebodies where the wall rock is of an incompetent nature. Parallel drives are developed in the...

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  • (PDF) Longwall; Sublevel Caving and Block Caving ...

    Longwall Longwall in coal Longwall in Hard Rock Sublevel Caving Characteristics of the ore body and mining method Development Production Equipments Used Block Caving Introduction Historical ...

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  • Sublevel caving: Engineered to Perform - Elexon Mining

    Oct 02, 2013  Source: Mining Magazine, September 2013. 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 cases, even to block caving.

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  • Sublevel Caving - Oraee

    Caving Mining Methods. Generally, caving methods extract ore, using the principle of fracturing the ore body and the rocks around it, inducing breaks in the whole strata and hence drawing the manageable ore, under more or less controlled conditions. ... Sublevel Caving. In this method, the stope is divided into sublevels, fairly close to each ...

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  • Sublevel caving - ScienceDirect

    PRINCIPLES AND APPLICATION OF SUBLEVEL CAVING IN METALLIFEROUS MINING THERE is a wide selection of various underground mining methods which can be adapted to the local conditions and to the particular requirements of the orebody concerned and of the surrounding areas. If optimum results as regards production are to be achieved, a number of ...

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  • Caving Mining Method Classification and Characteristics

    Aug 03, 2020  (3) Pillar Sublevel Caving Mining Method. This method is also called the sublevel caving method with bottom structure. It can be divided into horizontal deep hole sublevel caving method and vertical deep hole sublevel caving method. The main features are: The stage is divided into several sections and the ore is mined from top to bottom.

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  • Design of a new layout for sublevel caving at depth

    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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  • Design Operating Principles in Caving Methods

    Schematic layout for sublevel caving (after Hamrin, 1982) DEFINITION: A mining method which is applicable to low grade near -vertical metallic or nonmetallic deposits. Mining progresses downwards while the ore between sublevels is broken overhand with long hole uppers (fan -holes).

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  • Types of Mining Methods Sell Side Handbook

    Mar 11, 2018  Sublevel Caving. Sublevel caving is a large-scale mining method, suitable for large ore bodies with a steep dip. The setup is similar to long-hole stoping except loft raises are not required. Also, mining starts at the top of the ore body and progresses downwards in a safe sequence.

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  • Types of Underground Mining Method Comparison

    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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  • Cave mining 2040: advancing cave mining to meet future ...

    Jun 15, 2018  7. Sublevel caving. Sublevel caving is a method often evaluated in parallel with block and/or panel caving options. It requires multiple levels of development and ongoing ring blasting for production. Sublevel caving allows for a more selective extraction but typically achieves lower production rates than block and panel caving methods.

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  • (PDF) Underground mining Methods - ResearchGate

    Caving (i.e., Sublevel and Block) mining methods are v aried and versatile an d involve ca ving the ore and/ or the overlying rock. Sub sidence of the surface normally occu rs afterwar d.

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  • Definition of sublevel stoping

    A mining method involving overhand, underhand, and shrinkage stoping. Its characteristic feature is the use of sublevels. The sublevels are worked simultaneously, the lowest on a given block being farthest advanced and the subs above following one another at short intervals. The uppermost sublevel underneath the cover is partly caved.

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  • Sub-level open stoping - QueensMineDesignWiki

    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 one stope can produce greater than 25000 tons per month.

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  • Paper: Underground mining at Ekati and Diavik diamond mines

    Three principal underground mining methods: open benching, sublevel caving and incline cave mining were implemented at the Ekati mine. Diavik Diamond Mine started open pit production in 2003. By 2005, underground development had commenced with plans to mine the A154 and A418 pipes using backfill methods.

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  • Keeping up with caving - Redpath Mining

    Sub-level caving also allows for a slightly more selective extraction of the orebody than is attainable through block or panel caving. Production rates achieved in sub-level caving operations are typically lower than for block caves but higher than for stoping methods.” CAVING requIremeNts Caving is a non-selective, bulk mining method.

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  • Sublevel caving: Engineered to Perform - Elexon Mining

    Oct 02, 2013  Source: Mining Magazine, September 2013. 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 cases, even to block caving.

  • Get Price
  • Sublevel Caving - Oraee

    Caving Mining Methods. Generally, caving methods extract ore, using the principle of fracturing the ore body and the rocks around it, inducing breaks in the whole strata and hence drawing the manageable ore, under more or less controlled conditions. ... Sublevel Caving. In this method, the stope is divided into sublevels, fairly close to each ...

  • Get Price
  • Definition of sublevel stoping

    A mining method involving overhand, underhand, and shrinkage stoping. Its characteristic feature is the use of sublevels. The sublevels are worked simultaneously, the lowest on a given block being farthest advanced and the subs above following one another at short intervals. The uppermost sublevel underneath the cover is partly caved.

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  • Draw Control Strategy for - DiVA portal

    The sublevel caving (SLC) mining method has evolved over the last 100 years. The method was first used in the early 1900s in soft iron ore mines in Minnesota and Michigan, USA (Hartman and Mutmansky, 2002) . It represented an evolution from top slicing, but was initially highly labour intensive and required heavy timber support

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  • Sublevel caving - ScienceDirect

    The research problems were investigated at the Mining Department of the Royal Institute of Technology, Stockholm with the collaboration of various Swedish mining companies, especially LKAB Kiruna. ... model experiments and large-scale tests concerned with sublevel caving problems.

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  • Design Operating Principles in Caving Methods

    Schematic layout for sublevel caving (after Hamrin, 1982) DEFINITION: A mining method which is applicable to low grade near -vertical metallic or nonmetallic deposits. Mining progresses downwards while the ore between sublevels is broken overhand with long hole uppers (fan -holes).

  • Get Price
  • Keeping up with caving - Redpath Mining

    Sub-level caving also allows for a slightly more selective extraction of the orebody than is attainable through block or panel caving. Production rates achieved in sub-level caving operations are typically lower than for block caves but higher than for stoping methods.” CAVING requIremeNts Caving is a non-selective, bulk mining method.

  • Get Price
  • Design of a new layout for sublevel caving at depth

    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 ...

  • Get Price
  • Chapter

    uncover the ore; includes strip mining and quarrying. 2) Block caving - a method in which columns of rock are undercut and cave under their own weight; the roof material is expected to cave as well; includes panel and con­ tinuous caving. 3) Sublevel stoping - a method of

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  • Paper: Underground mining at Ekati and Diavik diamond mines

    Three principal underground mining methods: open benching, sublevel caving and incline cave mining were implemented at the Ekati mine. Diavik Diamond Mine started open pit production in 2003. By 2005, underground development had commenced with plans to mine the A154 and A418 pipes using backfill methods.

  • Get Price
  • Analysis of the surface subsidence induced by sublevel ...

    Jun 24, 2020  Sublevel caving is a mass mining method based on utilizing the gravity flow of the blasted ore and caved waste rock. Sublevel caving without sill pillars is the main mining method used in underground metal mines in China (Li et al. 2006). Sublevel caving has the characteristics of safety, mechanization, flexibility and allows a favorable work ...

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  • 4.3.2: Underground Mining Methods ABC 123: Testing Site ...

    Caving methods. Caving methods include block caving, sublevel caving, and longwall mining.For emphasis, allow me to repeat what I said earlier: caving methods are used in settings where the ore or the host rock is so weak that it cannot support its own weight for any period of time; the methods only work if the rock or the ore will readily cave under its own weight.

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  • Underground Mining Methods and Equipment

    Caving methods are defined as those associated w ith induced, controlled, massive caving of the ore body, the overlying rock, or both. Th e exploitation workings in caving methods are designed to collapse, with intentional caving of the ore and/or host rock. The three major caving methods are: • Longwall mining • Sublevel caving

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  • METHODS IN MINING BY SUBLEVEL CAVING - HARRY

    The present invention relates to a method in mining by sublevel caving in which in a development phase, on one side of the orebody to be mined, i.e. the "haulage wall side" or, in case of an inclined orebody, preferably the foot wall side, are driven haulage drifts or shafts, for example haulageways inclined relative to the horizontal plane, and from said drifts or shafts are driven cross-cuts ...

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