highwall mining extend mine

  • Analysis of Highwall Mining Stability - The Effect of ...

    2012-8-30  highwall mining may account for around 45 million tons of clean coal production representing about 4% of the U.S. total production. In addition to being a very productive and economic coal production method, analysis shows that auger and highwall mining appears to be as safe as surface coal mining (6). However, there

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  • (PDF) Highwall Mining: Design Methodology, Safety

    2014-9-1  Due to the recent technological advancements to achieve a much larger penetration length of up to 1,200 ft, the highwall mining method is preferred over

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  • Ground Control For Highwall Mining

    2021-5-20  Highwall mining continues to grow in importance as a coal production method from U.S. surface mines. It may account for as much as 4% of the total U.S. coal production,

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  • Highwall mining - SlideShare

    2013-2-17  Mobility For quick relocation over long distances, the highwall mining system can be taken apart in modules. disassembly and reassembly is facilitated by convenient hydraulic and electrical connectors All modules are sized for transport using regular public roads Tracks for positioning in the mine,

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  • Ground Control Design For Highwall Mining

    2012-8-29  Highwall mining is an important surface coal mining method, and it may account for approximately 4% of total U.S. coal production. Highwall stability is the major ground control related safety concern. Ground control plans for highwall mining should specify hole width, web pillar width, barrier pillar width and number of holes between barriers.

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  • Coal Mining and the Highwall Method OilPrice

    2010-11-26  And the answer is what is known as Highwall Mining. When the last economic cut has been made with a surface mining operation, the coal seam is still exposed, lying under the

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  • Performance of a highwall in soft rock, Highvale mine,

    The Highvale Mine, west of Edmonton, Alberta is a strip mining operation with Upper Cretaceous soft sandstone and mudstone overlying the coal deposit.

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  • University of Wollongong Research Online

    2020-10-13  Highwall mining refers to a mining method to recover coal from a surface mine that has reached its economic limit. The coal is accessed at the base of the highwall from where a series of parallel entries are driven into the coal seam. The entries are mined using two types of highwall mining

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  • Design of Auger highwall mining - SlideShare

    2018-1-7  To extend the mining life and coal production, Auger Higwall Mining (AHM) plays a potential mining technique for Mae Tan coal mine. The auger highwall system is horizontally drilled direction into the coal seams with the circular opening (Fig. 2). The mineable dip angle is less than 15 degrees.

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  • Highwall Hazard Awareness and Risk Assessment

    2020-1-28  COAL MINE FATALITY - On Wednesday, December 7, 2011, at approximately 7:30 a.m., a 49-year-old excavator operator, with 20 years of mining experience, was fatally injured when a highwa ll he was working near collapsed. The excavator was being used to load rock trucks. The operator's cab was positioned on the highwall side when the accident ...

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  • Highwall mining - SlideShare

    2013-2-17  Extend operational life of mine• Transition from surface mining to underground mining• Specific Highwall Mining situations Contour Mining Open Cast Mining Trench Mining Augered seams 5. Advantage of Highwall MiningCOST : Highwall mining is clearly cheaper, due to the lowerestablishment and development costs.

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  • Design Programs for Highwall Mining Operations

    2020-3-9  Highwall mining is a hybrid of surface mining and underground mining methods, and is often the only feasible method to recover the coal reserves in the central Appalachian coalfields due to the steep terrain and the closely spaced multiple thin coal seams.

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  • Highwall Miners Selection Guide Engineering360

    2021-5-16  Highwall miners link underground and surface mining operations by extracting coal from exposed horizontal seams in open-pit mines. This is done via a mobile system that contains a continuous miner controlled from the operator's cabin, a retractable conveyance system, and a vertical conveyor that handles and stacks the coal for transport.. The point at which the cost to remove the overburden ...

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  • A study of highwall mining panel stability -

    2002-7-1  Highwall mining is a hybrid system capable of accessing these reserves for substantially lesser capital cost and the lead time than that of a full underground mine, while also capable of producing in excess of 1 Mt/year. Highwall mining also has a significant operating cost advantage over underground mining, because of the comparatively reduced ...

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  • Performance of a highwall in soft rock, Highvale mine,

    The Highvale mine, west of Edmonton, Alta., is a strip-mining operation with Upper Cretaceous soft sandstone and mudstone overlying the coal deposit.

  • Get Price
  • A pre-feasibility study into trench and highwall mining ...

    2005-1-1  In Australia, approximately 2.5 Mt was extracted by highwall mining in 1996 (O’Hagan, 1997). The method is safe, effective and efficient, can extend the life of equipment, and access reserves which may otherwise have been left behind. The age of many Australian coal mines means the remaining reserves are deeper and therefore cost more to access.

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  • Design and Performance of Highwall Mining

    2014-3-2  A highwall miner system produces more coal per man than an underground continuous mining unit. When factoring the lower capital and labor costs of highwall mining, the cost per tonne is much less than underground mining. Production: Modern highwall mining equipment operate in seam heights of 0,76 meter to 3,05 meter in one pass and seam dips of ...

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  • highwall - definition - English

    A highwall mining machine having a power head located on a bench adjacent the highwall and a cutter head operable to cut a mined hole into a coal seam when thrust forward by the cutter head through an intervening compression beam multisection includes sensors for measuring the inclination of the cutter head and the cutter drum boom on the cutter head for the taking of multiple measurements of ...

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  • Highwall Article about highwall by The Free Dictionary

    NC Machinery assumed responsibility for the sales, marketing, and product support of the expanded Cat mining products, which include draglines, unit rig mining trucks, room and pillar and longwall equipment, electric rope and hydraulic shovels, highwall miners, drills, belt systems, and various other lines of support equipment.

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  • Mine Details MiningLink.au

    The mine is well equiped with coal handling and preparation facilities that were designed for the production of up to 1.5 million tonnes of coal a year using longwall mining methods. However, longwall mining was shut down and taken from the site in 1988 when a downturn occurred in the coal mining market. Coalpac Acquire Invincible Colliery in 1989

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  • Design Programs for Highwall Mining Operations

    2020-3-9  Highwall mining is a hybrid of surface mining and underground mining methods, and is often the only feasible method to recover the coal reserves in the central Appalachian coalfields due to the steep terrain and the closely spaced multiple thin coal seams.

  • Get Price
  • ACN 108 003 890 ASX Release 27 June 2011 Larger,

    2011-6-26  a 10 year life from the initial highwall operation. This is a larger annual tonnage and longer life operation than originally planned and does not reflect the substantial potential to significantly extend the mine life. Use of highwall mining will minimise the impact on the land surface and ground water.

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  • Applications Applied Mining Tech

    Highwall mining is used in open-cut coal mining operations with a continuous mining machine and a modular conveyor train being remotely driven into the exposed coal seam at the base of an open-cut highwall. The extraction process creates multiple tunnels that can extend over 500m, with supporting coal pillars left in between.

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  • Design and Performance of Highwall Mining

    2014-3-2  A highwall miner system produces more coal per man than an underground continuous mining unit. When factoring the lower capital and labor costs of highwall mining, the cost per tonne is much less than underground mining. Production: Modern highwall mining equipment operate in seam heights of 0,76 meter to 3,05 meter in one pass and seam dips of ...

  • Get Price
  • A pre-feasibility study into trench and highwall mining ...

    2005-1-1  In Australia, approximately 2.5 Mt was extracted by highwall mining in 1996 (O’Hagan, 1997). The method is safe, effective and efficient, can extend the life of equipment, and access reserves which may otherwise have been left behind. The age of many Australian coal mines means the remaining reserves are deeper and therefore cost more to access.

  • Get Price
  • Highwall Article about highwall by The Free Dictionary

    NC Machinery assumed responsibility for the sales, marketing, and product support of the expanded Cat mining products, which include draglines, unit rig mining trucks, room and pillar and longwall equipment, electric rope and hydraulic shovels, highwall miners, drills, belt systems, and various other lines of support equipment.

  • Get Price
  • Mining IDS GeoRadar

    Small surface movements on a mine highwall may be precursors of failure that, if detected, can provide sufficient warning to enable workers and machinery to be withdrawn to safety. Slope Monitoring in the Surface Mining Industry has become routine practice to support mining staff in the management of geotechnical risks.

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  • Investigating the effect of earthquakes on open pit

    Moreover, the new mining methods like highwall mining extend the final pit slope life which increases the probability of seismic activities during their life time.1., 5. There have been attempts to examine the impacts of earthquake parameters, including magnitude, focal depth, and epi-central distance on reported failures of natural slopes.

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  • ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON

    2020-10-13  the mining project. However, most of the regulations are meant for buildings or houses and do not concern high-walls. This thesis investigates the response of high-walls under the effects of vibrations from mine blasting. In this research, the relationship between the high-wall

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  • Mine Details MiningLink.au

    The mine is well equiped with coal handling and preparation facilities that were designed for the production of up to 1.5 million tonnes of coal a year using longwall mining methods. However, longwall mining was shut down and taken from the site in 1988 when a downturn occurred in the coal mining market. Coalpac Acquire Invincible Colliery in 1989

  • Get Price