Highwall mining is a relatively new semi-surface and semi-underground coal mining method used to extract such remaining coal reserves after the economic threshold imposed by the...
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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). The International Information Center for Geotechnical Engineers
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Simplified two-dimensional slope stability analysis may not correctly represent the Highwall Mining extraction slopes, especially when multiple seams are extracted from a single …
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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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The interlayer between the upper and lower entries is simplified into a beam structure model, the bending moment distribution characteristics of the beam under a load of highwall miner are …
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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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: Highwall Mining has been conducted at Moura Coal Mine since 1993. During that time period. four different highwall-mining systems have been used. One common constraint with. three of the systems was that all drives were 3.6 metres wide and they wcrcdrivcs are unsupported. The roof conditions vary from pit 10 pit, seam 10 scam and within a single reserve block. The roof …
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Newman, D., & Zipf, R. K. (2005) Analysis of Highwall Mining Stability -The Effect of Multiple Seams and Prior Auger Mining on Design, In Proceedings of 24 th International Conference on Ground ...
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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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The retained coal in the end slope of an open-pit mine can be mined by the highwall mining techniques. However, the instability mechanism of the reserved rib pillar under dynamic loads of mining haul trucks and static loads of the overlying strata is not clear, which restricts the safe and efficient application of highwall mining. In this study, the load-bearing …
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highwall mining. The Mine Safety and Health Administra-tion requires highwall mining operators to follow ground control plans that specify the pillar sizes necessary to prevent a pillar collapse that would threaten highwall stability. NIOSH has developed the Analysis of Retreat Mining Pillar Stability-Highwall Mining (ARMPS–HWM) computer ...
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Highwall mining is an important coal mining method. It appears that upwards of 60 highwall miners are presently in operation, and they may account for approximately 4% of total U.S. coal production. ... "Analysis of Practical Ground Control Issues in Highwall Mining," Proceedings of the 23rd Conference on Ground Control in Mining, National ...
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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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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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[9] D. Newman and R. K. Zipf, "Analysis of highwall mining stability-the effect of multiple seams and prior auger m ining on design," in Proceedings of the 24th international conference on grou nd
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The web pillars and interlayers at different elevations are stable during multi-layer highwall mining. These findings support the feasibility of multi-layer highwall mining for …
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The use of highwall mining systems has increased substantially in open-pit coal mines. It is used where overburden depth exceeds economical recovery. ... NIOSH has developed the Analysis of Retreat Mining Pillar Stability-Highwall Mining (ARMPS-HWM) computer program to assist mine planners with pillar design. Based on extensive research into ...
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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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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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Analysis Of Practical Ground Control Issues In Highwall Mining. Advanced Search. ... Highwall mining is an important coal mining method. It appears that upwards of 60 highwall miners are presently in operation, and they may account for approximately 4% of total U.S. coal production. A review of the Mines Safety and Health Administration (MSHA ...
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Highwall mining is an important coal mining method. It appears that upwards of 60 highwall miners are presently in operation, and they may account for approximately 4% of total U.S. coal production. A review of the Mines Safety and Health Administration (MSHA) data over the 20 year period from 1983 to 2002 identified 9 fatalities attributable to auger and highwall mining of …
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The objective of this is paper is to review the current state of knowledge and practice in highwall mining (HWM). HWM has become a widely-applied method in surface mining, commonly used alone or in conjunction with contour or slot mining. It provides 800-feet to 1,200-feet of additional recovery when the economic stripping ratio is reached in contour mining or in …
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This paper presents a brief review of highwall mining technology, including current status, analysis tools, and design techniques. In addition, it identifies important parameters …
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Highwall mining method is preferred and the only available practical way to extract those thin coal seams (>1 m) and the coal reserve left over in the highwall of a surface mine. ... The same procedure of model development and analysis of result was carried out for three different dimensions of opening. The depth of the highwall panel from the ...
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Stability analysis of rib pillars in highwall mining under dynamic and static loads in open-pit coal mine Haoshuai Wu1 · Yanlong Chen1,* · Haoyan Lv2 · Qihang Xie2 · Yuanguang Chen2 · Jun Gu2 ...
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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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Highwall mining is a method that involves using a continuous highwall miner system (CHM) to extract coal from the remaining coal seams, which has proven to be an effective and safe method for extracting coal after open-pit mining. However, application cases globally have shown that the feasibility of highwall mining in open-pit coal mines is subject to …
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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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Sustainability 2023, 15, 3603 4 of 19 than 300 m. The theoretical hourly production capacity is 15–27 t/h. The main parameters are shown in Table1. Figure 3. Open-pit slope and highwall mining ...
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The objective of this is paper is to review the current state of knowledge and practice in highwall mining (HWM). HWM has become a widely-applied method in surface …
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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, according to one recent estimate. Analysis of Mine Safety and Health Administration (MSHA) accident and injury statistics shows . overall, highwall mining has maintained an ...
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Highwall mining is a relatively new semi-surface and semi-underground coal mining method used to extract such remaining coal reserves after the economic threshold imposed by the stripping ratio...
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Highwall mining is a technique to obtain additional coal recovery after the economic strip limit is reached in surface mining. It involves the remote deployment of a continuous miner in openings beneath the final highwall with no personnel entry. ... Analysis of retreat mining pillar stability. In Proc. of 14th Conf. on Ground Control in Mining ...
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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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