Highwall Mining Analysis

ARMPSHWM is a modification of Analysis of Retreat Mining Pillar Stability ARMPS software for designing web and barrier pillars for Highwall Mining HWM ARMPSHWM calculates stability factors based on estimates of the loads applied to and the loadbearing capacities of web and barrier pillars used in highwall mining operations

The book will equip readers in understanding the complex multiple seam scenarios for highwall mining and its design for maximum coal recovery from any given site with better economics which will aid the mining companies in extracting lockedup coal following the safety norms to avoid hazards and minimise instability issues

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

A detailed look at coal mining and the highwall method When the last economic cut has been made with a surface mining operation the coal seam

Apr 29 2016 · Therefore study of highwall mining system application in Indonesia is needed in order to increase the recovery rate of coal mining in Indonesia This paper described the characteristics of the highwall mining system and discussed the appropriate highwall mining system application in weak geological condition Indonesia

Mar 13 2012 · High Wall Mining Technology• Highwall Mining is a remotely controlled mining method which extracts coal from the face of a coal seam under a highwall in a surface mine which has reached the final highwall position due to uneconomic stripping ratios Or due to local constraints which limit further surface mining• The coal left in the High

ADDCAR Systems LLC is an international highwall mining HWM specialist based in Ashland Kentucky USA with over 25 years experience operating HWM systems in the coalfields of Australia USA South Africa and India

Commonwealth Mining LLC is a Highwall Mining Services Co that has Operated Highwall Miners in Ohio West Virginia Kentucky Alabama and Virginia We have provided consulting for Highwall Mining Operations in Australia and India as well as currently providing consulting services to Highwall Mining Companies throughout the United States

3 Rib Pillar BearingLoad Model in Highwall Mining The damage of rib pillar is a gradual failure process in openpit highwall mining 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

Analysis of Safety Aspects and Mining Practices for Effective Ground Control in Surface Mining ARMPSHWM Analysis of Retreat Mining Pillar Stability Highwall Mining 1302 Practical Risk Assessment Guidelines for Identifying Assessing and Mitigating Stored Energy Hazards in Underground Coal Mines During and After a Mine Emergency

8733 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 20005

The objective of this is paper is to review the current state of knowledge and practice in highwall mining HWM HWM has become a widelyapplied method in surface mining commonly used alone or in conjunction with contour or slot mining

The two most significant ground control hazards are rock falls from highwall and equipment entrapment underground In the central Appalachians where the majority of highwall mining occurs in the USA hillseams or mountain cracks are the most prominent structure that affects highwall stability

The objective of this is paper is to review the current state of knowledge and practice in highwall mining HWM HWM has become a widelyapplied method in surface mining commonly used alone or in conjunction with contour or slot mining

2 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

Highwall miners link underground and surface mining operations by extracting coal from exposed horizontal seams in openpit mines This is done via a mobile system that contains a continuous miner controlled from the operators cabin a retractable conveyance system and a vertical conveyor that

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

Karekal S Subramanian S Porathur J Loui 2014 Slope stability analysis of open pit highwall mining excavations – A parametric study ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure SBMR 2014 International Society for Rock Mechanics

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

ANALYSIS OFUNSUPPORTED ROOFSPANS HIGHWALL MINING AT MOURA COALMINE John Hoelle 1 ABSTRACT Highwall Mining has been conducted at Moura Coal Mine since 1993 During that time period four different highwallminingsystems have been used One common constraint with three of the systems was that all drives were 36 metres wide and they wcrcdrivcs are unsupported

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 outproduce 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

Highwall mining is an important surface coal mining method and it may account for approximately 4 of total US coal production Highwall stability is the major ground control related safety

Jun 08 2014 · Ground Control Analysis of Highwall Mining Ground control analysis is the very critical premining 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

6 Australian design guidelines and case studies 61 Introduction 62 Brief history of highwall mining in Australia 63 Scope of the chapter 64 Feasibility study for highwall mining 65 Site investigation requirements and methods 66 Span stability assessment 67 Layout design 68 Case study 69 Monitoring of highwall mining operations 610 Summary

Empirical Approaches for Design of Web Pillars in Highwall Mining Review and Analysis Article in Geotechnical and Geological Engineering 322 · April 2014 with 77 Reads How we measure reads

Highwall mining continues to grow in importance as a coal production method from US surface mines It may account for as much as 4 of the total US 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

Theoretical Analysis of Damaged Width Instability Mechanism of Rib Pillar in OpenPit Highwall Mining Article PDF Available in Advances in Civil Engineering 20192115 · March 2019 with 35