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longitudinal retreat mining method

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Longitudinal longhole retreat - MineWiki, Queen's Mine Design .The bench is extracted along the entire length of the stable span. There is no free space for blasting that is to follow on the next level, as seen in the figure. (thumbnail). The use of the avoca longitudinal mining method.longitudinal retreat mining method,Transverse longhole stoping - MineWiki, Queen's Mine Design .In general, longitudinal methods are used where the rock mass quality of the hanging wall rock is competent enough to allow the development of a substantial opening in the hanging wall or footwall. Longitudinal longhole methods are very well suited to retreat mining, and can.Overhand Stoping - University of SaskatchewanMining Methods. • Two main Classes of Underground Mining Methods: –Bulk Mining (Caving, Open Stoping, VCR). –Selective Mining (Cut and Fill, Room and . Method. • Underhand Stoping – Top Down. Method. • Longitudinal Stoping – Long axis of stope is parallel to orebody strike. • Transverse Stoping – Long axis of.

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Comments on longitudinal retreat mining method

ERG Easy Slot Master Video 3

Mar 23, 2014 . Longitudinal longhole retreat is a branch of the generic mining method known as sublevel stoping and often requires the development of a rise or slot prior to production blasting. Easy Slot eliminates thee need for raise bore or burn cut blast to create the rise or slot. Easy Slot is less expensive quicker to.

Underground Mining Methods - Body

methods. Sublevel stoping, vertical retreat stoping, sublevel caving, and cut-and-fill mining are methods that usually can be applied under similar conditions. Shrinkage stoping remains, however, as one of the methods that can be practiced with a minimum of investment in machinery and yet is still not entirely dependent on.

DESIGN OF SUB LEVEL CAVING METHOD BY MEANS OF MINE .

tied up in these narrow widths, which call for mining methods other than the transverse sub-level caving. Therefore, it became imperative for Granduc. Mines to conduct a study program to determine the best method of mining of these areas. Longitudinal sub-level caving method (retreat along the strike) is considered most.

ERG Easy Slot Master Video 3

Mar 23, 2014 . Longitudinal longhole retreat is a branch of the generic mining method known as sublevel stoping and often requires the development of a rise or slot prior to production blasting. Easy Slot eliminates thee need for raise bore or burn cut blast to create the rise or slot. Easy Slot is less expensive quicker to.

Sublevel Stoping

Jul 8, 2009 . Method of underground mining operation: Sublevel Stoping By courtesy of Tamrock - Sandvick Copyright ./

Mining method evaluation and dilution control in Kittilä mine - Aaltodoc

May 5, 2014 . Degree Programme in Civil and Structural Engineering. Eero Tommila. Mining method evaluation and dilution control in. Kittilä mine. Master's Thesis. Espoo . longitudinal stopes should be increased from 7m to 10m. .. The Avoca mining method can be described as longitudinal retreat mining or LBS with.

EFFECT OF DELAYED BACKFILL ON OPEN STOPE MINING .

mine: Avoca, or longitudinal retreat open stoping, with delayed backfill; and transverse open stoping (Musselwhite Project Feasibility, Mining Report, 1996). Longhole open stoping is the principal method employed at Musselwhite, because of its safety, productivity, and economic characteristics. Where the ore is between 4.

Types of Underground Mining Method Comparison - 911 Metallurgist

Apr 4, 2017 . Factors Affecting Choice of Method; Review of Stoping Methods; Underhand Stoping Mining Method; Overhand Stoping Method; Longitudinal Back, Flat-Back Mining ... Starting at the tops of these raises drifts are run out and then, retreating toward the raise, the slice is worked back by breast stoping.

Design and Application of Sublevel Stoping Methods - Edumine .

Feb 20, 2011 . The most commonly used sublevel stoping mining methods are sublevel open stoping, long-hole open stoping or blasthole stoping, and vertical crater retreat (VCR). Variations of this method include vein (Alimak) mining, transverse stoping, Avoca and longitudinal mining. Sublevel stoping accounts for.

Open Stope Mining in Canada (PDF Download Available)

Jun 12, 2016 . Full-text (PDF) | Open stope mining is the most common mining method employed in underground, hard rock mines in Canada. . Figure 4. Longitudinal open stope mining, or sublevel retreat (after Potvin and Hudyma. +2 . longitudinal mining width compared against orebody rock mass quality (Potvin and.

Caving Underground Mining Methods (longwall, Sublevel caving .

Oct 23, 2014 . Longwall; Longwall in coal; Longwall in Hard Rock; Sublevel Caving; Characteristics of the ore body and mining method; Development; Production; . Longwalls can advance into an area of coal, or more commonly, retreat back between development tunnels (called "Gate roads") As a longwall miner.

Howden Ventilation on Demand (VOD)

Life of mine: 9 years. Direct operating savings: CAD $2.07/t. Net LOM savings including cost of ownership: CAD $0.77/t. Simple payback: 0.5 years. Mine 3: Energy savings. (Actual results using VOD). Mining method: Long-hole longitudinal retreat. Tonnage: 4,000 tpd. Airflow: 1,700,000 CFM. Energy cost: USD $0.18/kWh.

Çayeli Underground Cu-Zn Mine

degrees. A retreat transverse/longitudinal long hole stoping method with post backfill was developed utilizing trackless mining equipment. CBI has been able to achieve low mining costs and high productivity using this mining system. This paper will briefly review the Çayeli mine in general. Specifically, a brief history of the.

Stoping - Wikipedia

Stoping is the process of extracting the desired ore or other mineral from an underground mine, leaving behind an open space known as a stope. Stoping is used when the country rock is sufficiently strong not to collapse into the stope, although in most cases artificial support is also provided. The earliest forms of stoping.

THE USE OF GEOMECHANICAL INSTRUMENTATION . - CiteSeerX

An extensive ground instrumentation program was undertaken at the Hudson Bay. Mining and Smelting Co. Ltd. (HBMS) Callinan mine. This 600,000t/yr base metal mine is located in western Manitoba. Sublevel open stoping, by longitudinal retreat, is the most commonly used stoping method. The instrumentation included.

longitudinal retreat mining method,

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Contents. • Underground Mining Trends. • Mine Life-cycle. • Key Success Factors for Mine Planning and Design. • Mine Planning Process and Tools. • Examples of Outputs. • Expected developments in Underground Mining .. 29. Isometric View of Design Options. Longitudinal. Sub Level Open Stoping. Longitudinal. Retreat.

Avoca methods of mining - Basic Mining Techniques

Aug 4, 2017 . Avoca Method of mining is a variation of sublevel stoping method with the introduction of waste rockfill as backfill. Avoca is suitable for narrow ore bodies. Wider ore bodies (>10m) may find it challenging to fill the voids further to the walls in time for the next ring firings.

longitudinal retreat mining method,

Microseismic monitoring and analysis of induced . - Science Direct

May 17, 2017 . mines across the United States. Commonly accepted mining methods, such as longwall and room and pillar retreat, allow overburden to cave. This creates highly variable stress conditions that can be difficult to predict. From both the safety and production point of dx.doi/10.1016/j.undsp.2017.05.

Mining Terms

A mineral deposit in solid rock. Logging: The process of recording geological observations of drill core either on paper or on computer disk. Longitudinal Retreat Mining: A method of mining an orebody beginning at one stope and gradually mining new stopes towards the central ore-handling system. Long-hole open stope:.

Caribou ready for the runThe mining team at . - CIM Magazine

Feb 5, 2016 . Trevali is using a modified version of an AVOCA longitudinal longhole retreat mining method at Caribou. According to Rose, miners typically have access to both sides of the mining front when employing the AVOCA method, blasting and mucking on one side while backfilling on the other. But because.

Eagle Mine - Lundin Mining Corporation

Type of mine. Underground. Mine facilities and method The orebody is accessed from surface by decline mined down at 13%. Mining based on longhole open stoping .. longitudinal retreat stopes. Ore is produced with a . water discharge limits, hazardous materials, process chemicals, water recirculation, noise levels,.

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