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2009-8-27 The best way to describe the mining method is to consider astrike gully approximately 60 metres long that will beadvanced on an apparent dip in an up dip direction. Thestrike gully or resue face is sized to take mechanizedequipment and will always include the reef to be mined and asection of footwall waste. Working from an existingexcavation, which encompasses the reef and extends into
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SUBSTANCE: method involves dividing ore deposit into mining levels, cutting the mining levels in descending order and filling excavated space with hardening filling material, wherein filling material is supplied from day surface via main filling holes drilled in ledge wall rock outside shifting zone, which is formed in ledge wall rock during full ore deposit development.
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2012-9-5 Anglo American Platinum currently has underground mechanized mining methods at a small percentage of its mines. These methods are: • Bord and pillar (1.8 m–2.2 m stope widths using low-profile (LP) mechanized equipment) • Breast mining (1.3 m stope width using extra-low profile (XLP) mechanized equipment)
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2019-1-8 Conventional Mechanized Production Mining. Manroc Developments Inc. is continuously looking for new ways to provide safer, more economical and automated production methods. Currently, we incorporate both conventional and mechanized production mining
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2020-5-28 The mining methods include: • Longhole open stoping (LHOS) • Mechanized cut and fill (CAF) Notes: Resuing is not considered. Handheld equipment not included.
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2019-12-2 A mathematical hydraulic support self-tracking model for three-machine cooperative mining is proposed to address low efficiency and difficulties in strategy evaluation of a fully mechanized coal face. The proposed model uses the coordinates and traction speed of the shearer to calculate the frequency of the circular hydraulic support and realize the coordinated operation of the three-machine ...
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2018-1-30 mechanized, mass-mining method such as block caving.-Small deposits of the same ore type may require selective mining. 12.3 Orebodyproperties influencing mining method •Geomechanical setting Response of a rock mass to a particular mining method depends on
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2017-3-16 Methods of mining include stoping, caving, and various methods of working large deposits which, in addition to the method of actually breaking the ore, require elaborate and definite plans of, development of the orebody.
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2017-6-9 Green and Sustainable Mining: Underground Coal Mine Fully Mechanized Solid Dense Stowing-Mining Method [J]. Sustainability , 2017 , 9(8), 1418; doi: 10.3390/su9081418 (SCI, IF:1.789, JCR Ranks 120/241, Q2, in Category
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2017-6-9 Green and Sustainable Mining: Underground Coal Mine Fully Mechanized Solid Dense Stowing-Mining Method. SUSTAINABILITY, 2017, 9(8): DOI: 10.3390/su9081418 Dong, F; Long, RY; Bian, ZF; Xu, XH; Yu, BL; Wang, Y. Applying
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Mechanized mining technical process (MMTP) related to the control method of the shearer is a vital process in thin coal seam mining operations. An appropriate MMTP is closely related to safety, productivity, labour intensity, and efficiency. Hence, the evaluation of alternative MMTP is an important part of the mining design. Several parameters should be considered in MMTP evaluation, so the ...
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2021-4-1 Mining will be performed using highly-productive mechanized methods, including long-hole stoping and drift-and-fill. Each method will utilize cemented backfill for maximum ore extraction. The orebody was targeted to recover approximately 125 million tonnes at the highest net smelter return. The production plans in both the PEA’s initial five ...
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Fully mechanized coal mining method for low coal seam under complicated geological conditions. The s chematic diagram of three-machine system. In order for the three-machine system to achieve a productivity above 300~400 t/h when the thickness of
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2020-2-18 mechanized destress mining at South Deep mine P.G. Andrews1, R.J. Butcher1, and J. Ekkerd2 Synopsis The South Deep mine is a deep-level mine that is actively mining between 2600 m and 3000 m below surface, with expectations to mine to 3400 m depth. The The orebody lends itself to a fully mechanized mining method.
Read More2015-7-21 Thick and ultra-thick coal seams are main coal seams for high production rate and high efficiency in Chinese coal mines, which accounts for 44 % of the total minable coal reserve. A fully mechanized top-coal caving mining method is a main underground coal extraction method for ultra-thick coal seams. The coal extraction technologies for coal seams less than 14 m thick were extensively
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2016-2-16 The mining method is a mechanized bord and pillar layout, which will yield a total of 185 000 tons at full run of mine production from the underground UG2 mine. 152 PLATINUM SURGES AHEAD An average dip of 8 degrees has been recorded from underground development and mining
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2017-4-1 (2) Mining method and roof management method. This paper is mainly aimed at fully mechanized longwall mining with sublevel caving, without considering the influence of the mining method and the roof management method. (3) Mining depth and the dip angle of the coal seam.
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The presented solution of the mechanized supporting system allows to increase the progress of tunnelling, both for mechanical mining and for mining with the drilling and blasting method, however, the most important and key advantage of the presented system is a significant increase in work safety in the excavation being tunneled.
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2019-6-28 Cut and Fill mining method overview. Cut and fill mining is a highly selective open-stope mining method considered ideal for steeply dipping high grade deposits found in weak host rock. Many variations of the general cut and fill technique exist, however this article will focus on overhand cut and fill. Overhand cut and fill
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2021-5-6 Mechanized cut and fill mining refers to cut and fill stopes that are accessible by rubber tired equipment from the regular mine access development. Mechanized cut and fill stopes can be very productive with stope widths in excess of 40 m in good ground conditions and stope lift
Read More2019-12-2 A mathematical hydraulic support self-tracking model for three-machine cooperative mining is proposed to address low efficiency and difficulties in strategy evaluation of a fully mechanized coal face. The proposed model uses the coordinates and traction speed of the shearer to calculate the frequency of the circular hydraulic support and realize the coordinated operation of the three-machine ...
Read More2018-1-30 mechanized, mass-mining method such as block caving.-Small deposits of the same ore type may require selective mining. 12.3 Orebodyproperties influencing mining method •Geomechanical setting Response of a rock mass to a particular mining method depends on
Read More2016-2-16 The mining method is a mechanized bord and pillar layout, which will yield a total of 185 000 tons at full run of mine production from the underground UG2 mine. 152 PLATINUM SURGES AHEAD An average dip of 8 degrees has been recorded from underground development and mining
Read MoreThe presented solution of the mechanized supporting system allows to increase the progress of tunnelling, both for mechanical mining and for mining with the drilling and blasting method, however, the most important and key advantage of the presented system is a significant increase in work safety in the excavation being tunneled.
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Abstract: Aiming at the verification of the rationality of the top coal mining method used in the fully mechanized caving face under the goaf of Huojitujing 1-2 coal seams, this paper summarizes the top coal caving method by consulting data and combining with the
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2021-6-1 The Group currently adopts a comprehensive mechanized top-coal caving mining method which allows mining a full height of coal seams at one time, replaced the original top coal caving technology of mining coal seams layer by layer. It enables the Group’s
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2018-9-2 Hu Wusuoerlinmine design capacity service 58.2years. Using singlelever shaft, level elevation +230.Mine highmining all large mining mechanized mining methods thickness. Mine stripmining method, layout fullymechanized coal face wholemine production, face
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2014-10-23 The method has application, for example in sulfide deposits and underground kimberlite (diamond) mining. It is most applicable to :- o A large-scale or bulk mining method that is highly productive, low in cost, and used primarily on massive
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2011-11-2 It has largely been replaced by mechanized methods but is still used in many small mines around the world. Shrinkage stoping is a short-hole mining method which is most suitable for steeply dipping orebodies (70°- 90°). Also, the blasted ore must not
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