This comprehensive technical book on highwall mining covers theory and practice coupled with practical examples and design aspects. It contains eight extensive chapters elaborating broad-spectrum functionalities of highwall mining and its operational aspects, covering world scenario, economic potential, methods of coal extraction, design methodology including …
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The Evolution of Data Capture and Analysis for Highwall Mining. 1.19.2021 | Flight App | RTK | Open Pit Mines | Drone Capture ...
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The highwall mining method originated in the USA in the 1940s. The aim of the method was to recover coal from a surface mine that has reached its economic limit. ... Verma, C, Porathur, J, Thote, N R, Roy, P P and Karekal, S, 2013. Empirical approaches for design of web pillars in highwall mining: review and analysis, Geotechnical and ...
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Because there exist many similarities between the analysis of rib pillars in strip mining and highwall mining, the distributive stress characteristics of rib pillars in highwall mining can be explained by analyzing the stress characteristics of rib pillars in strip mining: (i) When coal is not mined, the coal body is subjected to the uniformly ...
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Stability analysis, incorporating LMS theory, complements conventional design techniques of highwall mining panels, where mobilised pillar strength is the sole consideration. The stability analysis aims to ensure that the pillars deform in a …
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The current highwall mining technologies originated in the USA in the mid-1970's. Two types of highwall mining systems have been commonly used: the Auger System which creates separate or twin circular holes of various diameters, and the Continuous Highwall Mining System (CHM) which mines rectangular entries, usually 3.5m wide.
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safety, and coal recovery, highwall mining is becoming an attractive option for extending reserve life at surface mines. Typically, highwall mining is performed by contract, with the ... Analysis of Roof Competency An initial assessment of roof stability and unsupported stand time were made using a combination of the CSIR Rock Mass Rating (RMR ...
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Find the latest published documents for highwall mining, Related hot topics, top authors, the most cited documents, and related journals. ScienceGate; Advanced Search; Author Search ... Stability Analysis of Rib Pillars in Highwall Mining Under Dynamic and Static Loads in Open-Pit Coal Mine 10.21203/rs.3.rs-1085469/v1 . 2021 . Author(s): ...
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The use of highwall mining can bridge the gap that exists between supply and demand in the energy sector. This paper presents a brief review of highwall mining technology, including …
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Highwall mining with backfill technology will be one of the main techniques of raising the recovery rate of coal resources under the end-slope all over the world in the future, in which the...
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Slope stability is a prominent problem for the efficient application and promotion of highwall mining technology, especially when mining residual coal under high and steep end …
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Based on a highwall mining project in Australia, this study adopted the FLAC 3D numerical simulation method to investigate the stability of coal pillars with different mining …
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Analysis of Highwall Mining stability—the effect of multiple seams and prior Auger mining on design.... Zipf RK, Bhatt SK. Analysis of practical ground control issues in Highwall Mining. In: Proceedings of the 23rd... Christensen P. Highwall mining revival around the corner. In: "Digging deeper" AMC mining consultants newsletter; May...
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Highwall mining is a relatively new semi-surface and semi-underground coal ... Analysis of accident and injury statistics shows that highwall mining has maintained an
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Highwall Mining in India ... CIMFR. Although, mining operations at both the sites are successful, performance analysis reveals that ooccurrence of roof fall, breakdown on account of geological ...
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According to the relationship of the numerical analysis, the multi-layer highwall mining. model is an integral model, while the remaining three numerical models are local. The local.
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Peer-review under responsibility of the organizing committee of EUROCK 2017 doi: 10.1016/j.proeng.2017.05.296 ScienceDirect Symposium of the International Society for Rock Mechanics A Framework for Geotechnical Hazard Analysis in Highwall Mining Entries Marc Elmouttiea Shivakumar Karekalb,* aCSIRO Energy, Queensland Centre for Advanced ...
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The use of the local mine stiffness concept can provide added confidence in a highwall mining panel layout design . Web and barrier pillar recommendations for close-proximity multiple-seam highwall mining were studied by Mark [22,23]. Perry et al. studied the effect of the highwall mining progression on the web and barrier pillar stability.
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Analysis Of Highwall Mining Stability - The Effect Of Multiple Seams And Prior Auger Mining On Design 2005. By Newman, David; Zipf, R. Karl. Source: Proceedings of the 24th International Conference on Ground Control in Mining, August 2-4, 2005, Morgantown, West ia. Peng SS, Mark C, Tadolini SC, Finfinger GL, Khair AW, Heasley KA, eds ...
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ARMPS-HWM is a modification of Analysis of Retreat Mining Pillar Stability (ARMPS) software for designing web and barrier pillars for Highwall Mining (HWM). ARMPS-HWM calculates stability factors based on estimates of the loads applied to, and the load-bearing capacities of, web and barrier pillars used in highwall mining operations.
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The LDC100 highwall miner (Han et al. 2014) is used to extract the coal left under the west highwall of the open-pit mine.This is an unmanned mining machine with a production capacity of 60 t/h and a suited coal-rock hardness factor of f ≤ 2, which is applicable for recovery from lignite open-pit mines.The recovery chamber has a rectangular cross-section measuring …
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The highwall mining method was adopted as an alternative method for extracting the remaining No.5 coal seam reserves at the 5 seam operation. There is currently a limited practical knowledge on the rockmass response to this mining method on various mining geometries. A great deal of experience has been derived and documented over the years
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These are important to ensure that mining is practical given the capabilities of the highwall mining machine (cutting height range, pull-out force versus down-dip angle and penetration, sumping force versus up-dip angle and penetration, leveling capabilities of the machine front to back and side to side versus the attitude of the pit floor).
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Using the EBH132 cantilever excavator for remote control mining, the field experiment shows that the recovery ratio of highwall residual coal resources was over 67%; hence, safety, efficiency and ...
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CSIRO has developed highwall mining design techniques suitable for australian conditions. Because highwall mining is reliant on the self-supported capacity of the rock mass, highwall stability, pillar design and stability of unsupported spans are major issues for highwall mining operators. ... based on back-analysis of all pits in Australia ...
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Highwall Mining is an important surface coal mining method in many countries such as the US, Australia and New Zealand. In the US it may account for approximately 4% of total U.S. coal production [3].Highwall Mining technologies originated in the USA in the mid 1970s and have seen widespread use since the early 1980s.
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Data Collection and Analysis for Design › Data collection ⁄Existing mine infrastructure (utilities, material transport) ⁄Geology: corehole drilling to characterize the rock mass » Lithology, Rock strength testing, Geotechnical logging, Chemistry / attribute analysis ⁄Topography » Drone point clouds can be used for joint mapping, 3D ...
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ARMPS (Analysis of Retreat Mining Pillar Stability) is software for designing pillars for room-and-pillar retreat mining. ARMPS calculates stability factors based on estimates of the loads applied to, and the load-bearing capacities of, pillars during retreat mining operations.
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In the year (1983-2002) around 620 incidents happened under the working operation of high wall mining due to improper planning and design structure at high wall face. The main objective of …
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As semi-underground and semi-surface mining methods, the auger and highwall mining methods are used to extract the remaining coal reserve after the economic threshold imposed by the stripping ...
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A highwall is defined as the unexcavated face of exposed overburden and material on an open face or bank. Miners must be concerned with new mine development, as well as normal mining ... This Instruction Guide uses a generic Job Safety Analysis (JSA) of jobs common to the
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