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
Jan 03, 2002 Highwall mining has been used successfully to mine (1) abandoned prereclamation law highwalls, (2) points or ridges uneconomic to mine by underground or other surface methods, (3) outcrop barriers left adjacent to underground mines, (4) separate benches of the same seam where the parting thickness or quality differences between benches render
Ground Control Analysis of Highwall Mining Layouts When designing a highwall mining layout, the mining engineer must specify 1) web pillar width, 2) number of web pillars between barrier pillars and 3) barrier pillar width. The design parameters are determined by the highwall miner hole width, the mining height and the overburden depth.
Jan 01, 2017 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.
The paper describes the stability analysis of High Wall Mining in south Deccan region of India. 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 this paper is to design safety by
Sep 01, 2019 Analysis methods. Highwall mining pillar design is a direct function of coal strength, opening height, opening width, and depth of cover. These inputs are used to create design curves unique to each mines geologic environment to specify the web and barrier pillar widths necessary to achieve the desired safety factor (SF).
Capturing good, accurate data for highwall mining analysis has been a persistent challenge facing the mining industry, and we think its one worth improving. A sophisticated highwall mining data capture system gives geologists, geotechnical engineers, and industry executives access to deep mine-terrain insights that can help them make smarter ...
Highwall mining systems have been used extensively in the US and Australia due to their safe and economical mining method (Robertson et al. 1988 Michell 1999). However, in Indonesia, only a few highwall mining oper-ations has been done (Furukawa et al. 2009). 3 Application of highwall mining system in Indonesia
Dec 12, 2019 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
articleosti_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
Jan 27, 2021 Parametric analysis has been conducted by changing one parameter at a time (OPT) and keeping all other parameters fixed in order to understand the influence of various parameters, namely, density, angle of internal friction, cohesion, overall pit slope angle and depth on the stability of the highwall slope.
Analysis of accident and injury statistics shows that highwall mining has maintained an admirable safety record. Its fatality and injury rates are significantly lower than those
Jun 08, 2014 Ground Control Analysis of Highwall Mining Ground control analysis is the very critical pre-mining activity for High wall mining. This technology is new for India, but very popular in USA and Australia. Till now USA has completed around 20 High wall mining projects with few cases of highwall collapses due to webs failure.
Sep 09, 2014 In designing Highwall slopes for an open pit, the design must include Highwall mining excavations, otherwise, near critical failure slopes could become critical and fail with Highwall excavations. In authors knowledge, this work is the first attempt at exploring the effect of Highwall mining parameters on overall slope stability.
Jan 03, 2001 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
Oct 02, 2014 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 right-angle conveyor system discharges coal on the right or left side on narrow benches.
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 admirable
To improve the resourcesx2019 recovery ratio and the economic benefits of open-pit mines, the development of highwall mining is used to exploit residual coal. The design of rib pillar, formed by excavation and mining activities in intact coal seams, is crucial to the overall stability and safety of the highwall mining operations. This paper focuses on the damage caused to
Nov 26, 2010 Coal Mining and the Highwall Method. There is an aspect of coal mining that gets relatively little attention, even though it is growing in
high_wall_mining_high_wall_mining._ The main technology to realize high production and high efficiency in abroad is fully mechanized long-wall mining for a single seam or room-and-pillar m. What we are doing is to give customers the most economical and suitable production line and maximize brand value.
Analysis of Practical Ground Control Issues in Highwall Mining, Proceedings of 23rd Conference on Ground Control in Mining, West Virginia University, pp. 210-219. Advertisement Recommendations
May 18, 2021 The Evolution of Data Capture and Analysis for Highwall Mining. Highwall mine analysis has come a long way, but progress didnt happen overnight. For decades, accurately assessing slope stability and other highwall characteristics... continue reading.
May 18, 2021 Capturing good, accurate data for highwall mining analysis has been a persistent challenge facing the mining industry, and we think its one worth improving.
The Maptek I-Site 8800 laser scanner was used to scan and develop a 3D digital terrain model for monitoring canyon walls surrounding Colorados busy Interstate I-70 Highway. Read More. Contact Maptek. Mine Measurement Home. Case studies home. Open Pit Applications. Underground Applications. Stockpile Measurement.
Since 1991, high-wall mining has been used in more than 30 pits at 13 coal mines in Australia 1. Highwall mining is a remote-controlled mining method for soil slope with height between 10m and 100m or rock slope with height between 15m and 100m. Normally, a series of parallel boreholes are excavated horizontally by using remote-controlled ...
Analysis of Stability and Dimensioning of Openings/Pillars with Highwall Mining System in Panian pit of Semirara Coal Mine, Philippines January 2021 Conference CINEST 2015
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.
The so-called Highwall Mining Systems have been effectively applied for the last 10-15 years in coal mining practice in USA, Australia and the RSA. In general, those are systems of underground coal mining with mine entries directly communicating to the surface.
analysis, the east wall had the highest potential of rockfall with an average movement of 782 feet. Keywords Highwall, Compliance, Reconciliation, Rockfall, Mine Design
Sep 13, 2018 stability of the highwall mining. To prevent the slope from collapsingduringtheprocessofhighwallmining,thewidthof theribpillarsisalwayssomewhatlargeinpractice.However,
ABSTRACT OF THESIS . ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON THE HIGH-WALL STABILITY . The stability of the high-walls
The highwall developed in the Upper Clarion and Lower Clarion mining pits at this mine was developed where second mining had occurred in old underground mine workings underlying and adjacent to the area where the highwall was developed. The mining methods employed by this operator did not insure highwall stability in these locations.
Nov 28, 2011 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.
Apr 03, 2019 Highwall mining (HWM) technology is an efficient method for exploiting residual coal resources in Chinese open-pit coal mines. However, on-site personnel and equipment can be damaged by the instability of the highwall mining residual
Jun 29, 2017 HIGHWALL MINING, 2017 Edition, June 29, 2017 - HIGHWALL MINING. 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 ...