analysis of highwall mining s ility

Analysis of Highwall Mining Stability The Effect of Multiple Seams and Prior Auger Mining on Design, D. Newman, Appalachian Mining and Engineering, Inc., Lexington, KY . Get Price; Modern design coal auger 219 Ceramic Ball Mill. CDC Mining Analysis of Practical Ground Control Highwall mining is an important coal mining method.

Stability analysis of a deep highwall slope using ...

2021-1-27 · Kinematic analysis for structural discontinuities. Kinematic analysis has been performed to illustrate the potential for various modes of rock slope failures, namely, planar, wedge and toppling failures that occur due to the presence of unfavourably oriented discontinuities (Hoek 2007).The analysis was based on Markland''s test as described by Hoek and Bray ().

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

2019-9-1 · 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).

Ground Control For Highwall Mining

2021-8-19 · Analysis of Mine Safety and Health Administration (MSHA) accident and injury statistics shows that, overall, highwall mining has maintained an admirable safety record. Its fatality and injury rates are comparable to those for other surface mining methods, and are significantly lower than those for underground mining.

Design of highwall mining equipment electronic guidance ...

Abstract. 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. A small desk top computer is used at the operator''s station to send and receive signals in serialized bit streams to a downhole microprocessor.

(PDF) Geomechanics and highwall mining

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 ...

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 stripping ratio is reached or, in slot mining…

Analysis of unsupported roof spans highwall mining at ...

Highwall Mining has been conducted at Moura Coal Mine since 1993. During that time period. four different high wall-mining systems have been used. One common constraint with three of the systems was that all drives were 3.6 metres wide and they were where unsupported.

Highwall Mining in a Multiple-seam, Western United States ...

2005-1-1 · Analysis of Highwall Mining Stability - The Effect of Multip Highwall Mining in a Multiple-seam, Western United States Se The Slope Stability Assessment in the Wall Overlooking the S Numerical Modeling as a Tool to Predict Pillar Condition and Development and Testing of a New Roof Prop ...

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

 · Analysis of MSHA accident and injury statistics shows that highwall mining has main-tained an admirable safety record. Its fatality and injury rates are comparable to …

A Framework for Geotechnical Hazard Analysis in Highwall ...

2017-1-1 · 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.

Coal Mining and the Highwall Method | OilPrice

2010-11-26 · 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 ...

Highwall Mining | Applicability, Design & Safety | John ...

2017-7-5 · 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 ...

A study of highwall mining panel stability

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 controlled rather than a violent manner.

Design Programs for Highwall Mining Operations

2020-10-13 · Design Programs for Highwall Mining Operations Ming Fan . 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. Compared to the

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 Element Modelling and Statistical Approach. Mohammed Asif1, Dr M. Gopal Naik2, Dr I. Sreenivasa Rao3 *1Department of Civil-MiningEngineering, Osmania University College of …

Highwall Concerns

2015-9-4 · Highwall Concerns. There are several geological hazards that are encountered during the life of a quarry or open pit mine. Most of these hazards are included in a mine''s Ground Control Plan (GCP). The GCP ensures adequate geotechnical planning, safe mine operation and reclamation goals. Some measures of consideration in the GCP should include ...

"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.

(PDF) Stability analysis of a deep highwall slope using ...

Kinematic analysis is also performed to illustrate the potential for various modes of highwall slope failures, namely, planar, wedge and toppling failures that may occur due to the presence of ...

Classification of Stability of Highwall During Highwall ...

2014-11-28 · The depleting coal deposits day by day required the introduction of novel methods of mining like highwall mining. Highwall mining is a method of extraction of coal blocked in the highwall. The method involves considerable challenges in the area of roof control and most importantly the stability of the highwall itself. Highwall mining has gained considerable importance all over the world, owing ...

Application of Highwall Mining System to Recover …

2017-1-22 · This paper discusses the applicability of a highwall mining system for recovering plenty of coal left around the end-walls and its appropriate design by means of numerical analysis. Keywords: 1. Introduction Surface mining plays considerable roles in the world''s coal mining, which has many advantages such as large

ANALYSIS OF PRACTICAL GROUND CONTROL ISSUES IN …

investigation including highwall mining through old auger workings, highwall mining near old underground mines, multiple-seam and multiple lift highwall mining and finally the size and frequency of barrier pillars. INTRODUCTION Auger and highwall mining continues to grow in importance as a coal production method from surface mines in the U.S.

Ground Control for Highwall Miining

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 ...

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

Analysis of MSHA accident and injury statistics shows that highwall mining has main-tained an admirable safety record. Its fatality and injury rates are comparable to those for other surface ...

Slope stability analysis of open pit highwall mining ...

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 authorsu27 knowledge, this work is the first attempt at exploring the effect of Highwall mining parameters on overall slope stability

Layout Design And Case Study For Highwall Mining of Coal ...

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 ...

Numerical back-analysis of highwall instability in an open ...

Numerical back-analysis of highwall instability in an open pit: a case study JM Kabuya École Polytechnique de Montréal, Canada R Simon École Polytechnique de Montréal, Canada J Carvalho Golder, Canada D Haviland Golder, Canada Abstract In this paper, a numerical modelling study to back analyse a highwall instability event in an open pit has been

Application of highwall mining system in weak geological ...

2016-4-29 · Almost all the coal is produced from open cut mines in Indonesia. As a consequence of open cut mine application, a great deal of coal is left out in the highwalls of the mined-out pits. Highwall mining systems can be used to recover this coal. The use of highwall mining systems has increasingly come into play in the US and Australia. However, it is not common in Indonesia.

Slope stability analysis of open pit highwall mining ...

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. Karekal, S ...

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