highwall mining analysis

High Wall Safety In Surface Mining: The Changing Seasons

 · High wall safety in surface mining is an essential topic for everyone on a mine this time of year. What is happening during the fall and spring causing the large increase in high wall and stockpile failures? There are four main causes according to mine safety expert, Kim Redding.

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"Slope stability analysis of open pit highwall mining ...

Highwall mining operation involves driving a series of parallel unsupported, unmanned and unventilated excavations into a coal seam exposed at the open pit Highwall using a remotely operated continuous miner with attached conveying system. These parallel excavations are separated by web pillars of pre-designed width which are critical to the Highwall mining operations.

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Geotechnical Issues on Application of Highwall Mining ...

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).

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The experience of Addcar in highwall mining operations

Highwall mining (HWM) is a hybrid mining arrangement whereby underground mining methods ... additional analysis based on localised conditions being required. For thin seams with low height highwalls, 60% (by plan area) or higher can be achieved whereas for thicker seams and

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Highwall mining of thick, steeply dipping coal–a case ...

 · 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 mine''s geologic environment to specify the web and barrier pillar widths necessary to achieve the desired safety factor (SF).

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HW300 Highwall Mining System

Features. The Highwall Mining Method. Extracting coal affordably and safely. The highwall mining system offers an innovative and efficient method for extracting coal from exposed seams in a multitude of applications. The HWM300 works on the pit floor …

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Reasonable coal pillar design and remote control mining ...

 · 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 coal pillars and subsidence of final end-walls.

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SimulationResearchfortheInfluenceofMiningSequenceonCoal ...

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 ...

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Highwall Mining

Agapito Associates, Inc. (AAI) personnel have the highwall mining experience and expertise to optimize coal recovery while promoting safety at your coal property. AAI applies operational experience, empirical relationships, and numerical modeling analyses to develop designs that. Preserve highwall stability. Maximize recovery.

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

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 …

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"Ground Control Design for Highwall Mining" by R. Karl Zipf

 · Highwall mining is an important surface coal mining method, and it may account for approximately 4% of total U.S. coal production. Highwall stability is the major ground control related safety concern. Ground control plans for highwall mining should specify hole width, web pillar width, barrier pillar width and number of holes between barriers. This paper offers simple design charts for …

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Design of highwall mining equipment electronic guidance ...

@article{osti_5631032, title = {Design of highwall mining equipment electronic guidance package}, author = {Brenden, B B and Morgen, G P and Shorpik, J R and Farrar, R}, abstractNote = {This report provides design specifics and guidance software for a guidance system intended for use in guiding an auger type highwall mining head through thin coal seams to depths of up to 600 ft.

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ANALYSIS OF PRACTICAL GROUND CONTROL ISSUES IN …

the past 5 years, 1 fatality occurred in highwall mining. Estimates of the manpower requirements in highwall mining suggest that its fatality rate is essentially the same as for surface coal mining, thus highwall mining appears to be a very safe modern mining method. Highwall stability is the major ground control related safety

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Kemmerer Mine—Wyoming

Chevron Mining, Inc. Highwall Slope Stability AAI has investigated various aspects of highwall stability at several pits at the Kemmerer Mine, including large-scale slope failure, wedge analysis, and most recently, rockfall risk assessment. Alternative catch bench and berm designs were evaluated using the statistical CRSP program and numerical UDEC models. Both programs were calibrated using […]

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This presentation is for illustrative and general ...

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.

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EVALUATING OPEN PIT HIGHWALL DIG COMPLIANCE

analysis, the east wall had the highest potential of rockfall with an average movement of 782 feet. Keywords: Highwall, Compliance, Reconciliation, Rockfall, Mine Design

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Addcar | Highwall Mining System

ADDCARSYSTEMS ® No. 1 HWM Drive Ashland, KY USA 41102 P. +1 606 928 6002 F. +1 606 928 7257 E. Email ADDCAR HighWall Mining ® 91 York Street, Teralba, NSW, Australia 2284 P. +61 2 4941 7500 F. +61 2 4941 7590 E. Email

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"Analysis of Highwall Mining Stability-The Effect of ...

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 slot mining when surface ...

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Barr Engineering > Geotechnical highwall assessment at ...

Nevada. cost. $25,000. completion date. 2020. A local area within a highwall at Bald Mountain had an existing instability and rock fall hazard in the upper open-pit slope. This instability was potentially jeopardizing mining operations due to its location above a primary haul ramp for active mining. With a mine plan that increased use of this ...

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Analysis of Highwall Mining Stability

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 …

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CHAPTER 8: SUBSIDENCE PREDICTION METHODS

8.7.3.3 ANALYSIS OF RETREAT MINING PILLAR STABILITY (ARMPS - HWM) Not currently required by MSHA for permitting of highwall coal mines. However, the program is being used in permit applications for highwall mines in the US. Calculates a stability factor (SF) for the web and barrier pillars associated with a highwall mine plan. DEQ 20-005

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Highwall Mining: Applicability, Design & Safety

 · 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 empirical web pillar …

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ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON …

ABSTRACT OF THESIS . ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON THE HIGH-WALL STABILITY . The stability of the high-walls is one of the major concerns for open pit mines.

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CDC

 · 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 stripping ratio is reached or, in slot mining, when surface access to a reserve is limited.

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A Framework for Geotechnical Hazard Analysis in Highwall ...

 · 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.

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Highwall Mining: Applicability, Design & Safety

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 empirical web pillar design ...

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Stability analysis of a deep highwall slope using ...

 · 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 …

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Design Programs for Highwall Mining Operations

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.

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The Evolution of Data Capture and Analysis for Highwall Mining

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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Analysis Of Practical Ground Control Issues In Highwall Mining

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 which inadequate ...

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Optimal Design and Monitoring for Highwall Mining

A highwall mining index method is presented to help the decision making process in Chapter 2. Site investigation. If the site is considered likely to be a suitable site for highwall mining, geological and geotechnical investigation in the mining reserve (e.g., drilling, highwall mapping, highwall hazard identification etc.) includes the ...

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Stability Evaluation of Highwall Slope in an Opencast Coal ...

The monitoring, analysis and stabilization of slopes is an integral part of the opencast and high wall mining operations during the entire life cycle of the project. Analyses must be based upon a model that accurately represents site sub-surface conditions, ground behavior, and applied loads. Consequences of failure Acceptances Criteria

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Coal Mining and the Highwall Method | OilPrice

 · Coal Mining and the Highwall Method. There is an aspect of coal mining that gets relatively little attention, even though it is growing in popularity, It is with this method that I will conclude ...

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Highwall mining – a new approach in india

 · 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.

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