highwall mining analysis

Highwall Mining: Applicability, Design & Safety

2019-12-12 · 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 empirical web pillar design, numerical modelling for stress analysis, safety factor for web pillars, panel and ...

A Method To Eliminate Explosion Hazards in Auger …

The auger highwall mining method is an effective meth- od to recover coal from a reserve when removal of the overburden by surface mining equipment becomes uneco- nomical. In this method of mining, a horizontal auger enters the coal seam from the surface mine bench under the highwall and the coal is literally drilled in a series of

Case Study on Stability Analysis of Highwall Mining in ...

2020-12-8 · Case Study on Stability Analysis of Highwall Mining in India by using Combined Finite .. 55 Methodology Layout of High Wall Mining Theoretical Approach Numerical Modelling III. CASE STUDY OF MINE A Mine „A‟ is an open cast mine from south Deccan region of India.

SimulationResearchfortheInfluenceofMiningSequenceonCoal ...

2021-3-30 · According to the highwall mining sys-tems and mining conditions, the penetration depth varies from 50m to 500m, and the mining range is stable without support [6–8]. Research on the theory and practice of highwall mining method has been widely reported [9–11]. Arrowsmith and Fiscor discussed recent developments in highwall mining techniques ...

Highwall Mining in the Heart of Appalachia | Coal Age

2011-11-28 · Worker productivity is one of the biggest advantages of highwall mining over underground mining. With the improvements made to the HW300, Omega is able to out-produce its underground mine. "When you perform a cost per ton analysis of the highwall miner against the underground mine, you reduce costs 75% and get four times the production.

CDC

2001-1-3 · Mining Product: ARMPS-HWM - Analysis of Retreat Mining Pillar Stability - Highwall Mining. 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 ...

The Evolution of Data Capture and Analysis for Highwall …

2021-12-27 · Highwall stability is the major ground control related safety concern, and operators are required to develop and follow an appropriate highwall mining ground control plan. The plans usually specify the following geotechnical parameters: hole width, maximum hole depth, maximum overburden depth, seam thickness, web pillar width, barrier pillar ...

The experience of Addcar in highwall mining operations

2020-10-13 · mining. Procedures, management plans, inspection and reporting regimes are required to address the exposures as noted and recent refinements to Permit to Mine (PTM), Entry Design reviews, highwall geotechnical inspection and monitoring, FOPs protection on equipment, use of safety berms have been instigated into daily and shiftly mining practice.

Slope stability calculation method for highwall mining ...

2022-1-7 · Slope stability is a prominent problem for the efficient application and promotion of highwall mining technology, especially when mining …

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Analysis of Practical Ground Control Issues in Highwall Mining 8/1/2004 - Conference papers This article discusses highwall stability, reasons for early pull out of highwall miner holes, and geotechnical engineering and planning factors, as well as operating practices to improve highwall stability and minimize the risk of a trapped miner.

Reasonable coal pillar design and remote control mining ...

2019-4-1 · The highwall mining pillar design is a direct function of the coal strength, opening height, opening width, and depth of cover. An elasto-plastic model suitable for the analysis of coal pillars has been developed and implemented in both two- and three-dimensional finite-element codes by Fama et al. [20]. The use of the local mine stiffness ...

Highwall Mining: Applicability, Design & Safety (English ...

2017-7-6 · Highwall Mining: Applicability, Design & Safety (English Edition) eBook : Porathur, John Loui, Roy, Pijush Pal, Shen, Baotang, Karekal, Shivakumar: : This comprehensive technical book on highwall mining covers theory and practice ...

Layout Design And Case Study For Highwall Mining of …

1999-8-25 · Highwall mining is a method used in surface coal mines to extract coal by driving a series of parallel or sub-parallel unsupported entries from the base of the highwall of an open pit mine for a distance of 300–500m by remotely controlled continuous miners. A typical pit to be highwall mined is about 1km in length, with a highwall height of ...

Highwall mining equipment: advanced highwall mining …

@article{osti_5411227, title = {Highwall mining equipment: advanced highwall mining system, preliminary design and analysis. Phase I final report}, author = {Treuhaft, M B}, abstractNote = {For greater recovery of coal from highwalls, SwRI is developing an advanced highwall mining system to demonstrate the ability of a steerable auger cutterhead to remain in the coal seam …

Stability Evaluation of Highwall Slope in an Opencast …

2018-3-9 · In this mine, the highwall was monitored visually and using cyclops. The displacement trend obtained from slope monitoring is a representation of the deformation taking place within the pit slope. In this study, slope stability analysis has been performed by using computer program FLAC/SLOPE to assess the effect of groundwater on stress ...

University of Wollongong Research Online

2020-7-2 · Analysis of unsupported roof spans highwall mining at Moura coal mine John Hoelle Anglo Coal Follow this and additional works at: https://ro.uow /coal Recommended Citation John Hoelle, Analysis of unsupported roof spans highwall mining at Moura coal mine, in …

A Framework for Geotechnical Hazard Analysis in Highwall ...

2017-1-1 · Such analysis would provide more insight into designing highwall mining layouts and in predicting possible impending highwall failures, and indirectly facilitates reducing machine downtime for better management of highwall mining operations. © 2017 The Authors.

Empirical Approaches for Design of Web Pillars in Highwall ...

Highwall mining (HWM) technology is an efficient method for exploiting residual coal resources in Chinese open-pit coal mines. However, on-site personnel and …

(PDF) Highwall Mining: Design Methodology, Safety and ...

(PDF) Highwall Mining: Design Methodology, Safety and Suitability

Highwall failures | Resources Safety & Health Queensland

2015-1-7 · Reported surface coal mine highwall failures continue to concern the Mines Inspectorate. Recently a shot had been drilled and loaded in the highwall which later collapsed. This added the hazard of unexploded product requiring misfire recovery. Many events have occurred without personnel or equipment being present, however the most serious incident for …

Analysis Of Practical Ground Control Issues In Highwall …

2021-12-27 · Highwall stability is the major ground control related safety concern, and operators are required to develop and follow an appropriate highwall mining ground control plan. The plans usually specify the following geotechnical parameters: hole width, maximum hole depth, maximum overburden depth, seam thickness, web pillar width, barrier pillar ...

Presentation on Highwall Mining

2014-10-2 · Excellent Mobility The Highwall mining system is an agile, self-propelled machine that operates on contour benches as narrow as 18 m (59 ft). It trams easily from entry to entry and discharges coal in tight spaces. An optional …

Maptek

Highwall mapping for mine geology applications. User friendly systems and workflow allow surveyors to scan highwalls quickly and easily, capturing data at the same time as daily or end of month surveys. Read More.

Paper: Numerical back-analysis of highwall instability in ...

Abstract: In this paper, a numerical modelling study to back analyse a highwall instability event in an open pit has been completed. The unstable highwall was over 125 m high and 200 m wide. The overall slope angle was 44°. The highwall instability was detected by slope stability radar and resulted in a multi-bench failure consisting of approximately 3,000,000 t of rock.

A Framework for Geotechnical Hazard Analysis in Highwall ...

Highwall mining involves driving a series of parallel entries with web pillars in between. These entries are driven by using a continuous miner with attached conveying system to extract locked up coal behind the highwall slope when the open cut coal mine reaches its ultimate limit. These entries are driven unmanned, unventilated and unsupported.

The Evolution of Data Capture and Analysis for Highwall …

2021-1-19 · As technology continues to evolve, the tools used by highwall mining operations have advanced as well, gradually leading to more efficient and precise highwall analysis practices. Today, drone-based highwall scanning technology provides operators unprecedented insight into essential geological and geotechnical attributes of mining terrain, including the position of coal …

CDC

2002-1-3 · Highwall mining has become a widely applied method in surface mining. It is commonly used alone or in conjunction with contour or slot mining. It provides 800 to 1,200 ft of additional recovery when, in contour mining, the economic …

Geotechnical Issues on Application of Highwall Mining ...

2015-3-20 · cut coal mines can form the starting point for other mining methods, such as highwall or underground mining. In its basic application, highwall mining is a technique utilized after the open cut portion of a reserve has been mined, sometimes prior to the introduction of underground mining (Seib, 1993).

7 IMPACT EVALUATION 7.1 Highwall Mining

2019-10-26 · The highwall mining equipment will access coal from the purpose-prepared trench, as indicated in the proposed mine plan (Figures 7-2 and 7-3). The highwall mining is planned to penetrate nearly 300 m into the coal seam. Figure 7-1 is an illustration of the highwall mining system. Figure 7-1 Highwall Mining System (, 2011)

Feasibility of high recovery highwall mining equipment ...

@article{osti_6859514, title = {Feasibility of high recovery highwall mining equipment. Final report}, author = {}, abstractNote = {Three equipment systems exhibited significant promise: the RSV Miner, a surface longwall using standard underground equipment, and the variable angle auger. Other equipment systems showing considerable merit were the surface shortwall, and …

(PDF) Highwall Mining: Design Methodology, Safety and ...

 · Analysis of M SHA accident and injury statistics shows that highwall mining has mai n- tained an admirable safety record. Its fatality and injury rates …