Anyone you share the following link with will be able to read this content. Instead of an auger hole, an entry into the coal seam is made by a continuous miner, remotely operated from a cabin at the surface. Punch longwall mining introduction underground coal. Hw300 highwall mining system the hw300 produces high volumes of coal at very low costs.
This paper described the characteristics of the highwall mining system and discussed the appropriate highwall mining. Very little to no applications have been done in the mining. Remotely operated cutter head goes underground near horizontal no underground exposure to personnel extraction by parallel. Sme mining engineering handbook 3rd edition knovel. Capable of full operation with a three to fourman crew, the cat highwall mining. Application of highwall mining system to recover residual coal in endwalls hikaru shimada a, yanlong chen a, akihiro hamanaka a, takashi sasaoka a, hideki. With over 20 years experience operating systems in the coalfields of australia, usa, south africa and india, addcar highwall mining systems have produced in excess of 100mt of coal and is a. Miniera specialists in the supply of innovative and patent pending highwall dewatering and water transfer systems for the mining industry. In the past 5 years, 1 fatality occurred in highwall mining. Tools to build and solve models for data mining and. Capable of full operation with a three to fourman crew, the cat highwall mining system.
Highwall mining is a proven primary method for mining coal from exposed seams. It involves remote deployment of a continuous miner in openings beneath the final highwall, with no personnel entry. The mining industrys leading monthly issn 03086631 october 2010. This third edition reaffirms its international reputation as the handbook of choice for todays practicing mining engineer. The tabula pdf table extractor app is based around a command line application based on a java jar package, tabulaextractor the r tabulizer package provides an r wrapper that makes it easy to pass in the path to a pdf. Ground control design for highwall mining centers for disease. Application of highwall mining system in weak geological. Highwall stability is the major ground control related safety concern. Professional highwall mining services, llc was formed in 20 and the company has seen steady growth. Highwall mining is an important coal mining method. Highwall safety powerpoint presentations you can use in your safety training programs. Surface auger mining at rietspruit mine services pty ltd. Addcar highwall mining system ugm addcar systems llc is an international highwall mining specialist based in ashland kentucky usa. In the method of secondary extraction known as longwall mining a relatively long mining face typically in the range 100 to 300m but may be longer is created by driving a roadway at right angles between two roadways that form the sides of the longwall block, with one rib of this new roadway forming the longwall face.
The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Hw300 highwall mining system your local cat dealer in co. Highwall safety safety training powerpoint presentations. Fall of highwall surface mine virginia fairbanks coal company inc fairbanks no. Whether youre operating a trench, open cast or contour mine, the cat highwall mining system can extract coal affordably and safely. In india, the highwall mining is in the nascent stage. Application of highwall mining system to recover residual. Highwall safety pdf files browse our collection of highwall safety files in pdf. Pdf on jul 1, 2015, wadwani h and others published highwall mining find, read and cite all the research you need on researchgate. Aai applies operational experience, empirical relationships, and numerical modeling analyses to develop designs that.
The use of remote sensing to measure and monitor evaporation is a relatively new scientific field worldwide and has mostly been applied to agricultural applications. Highwall miner 1 the machine is generally operated from a bench that is created by the removal of overburden material and coal by way of contour surface mining around the perimeter of a coal seam. Mar, 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. Temporary highwall bunds are required for safety during open cut mining prior to the infilling of pits, and permanent highwall safety bunds are necessary to prevent public access to abandoned open cut final voids. It contains eight extensive chapters elaborating broadspectrum functionalities of highwall mining. Ahs provides a radical alternative to current highwall mining equipment. Butcher synopsis open cast mining has been practiced in south africa since the late 1970s. The cut coal is transported by conveyors behind the miner to the.
More importantly, it is safer than traditional underground mining, as it sends no one. 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. Highwall mining is an efficient, proven and durable method for mining coal from exposed horizontal seams producing an average of 110 000 tonnes 120,000 tons of coal per month. In its basic application, highwall mining is a technique utilized after the open pit portion of a reserve has been mined, sometimes prior to the introduction of underground mining. Highwall mining a new approach in india slideshare. Highwall safety pdf files browse our collection of highwall safety files in pdf format. Features are compiled by seam name into seperate layers for underground and surface mining. Geotechnical issues on application of highwall mining system. Extraction and characterization of mining highwalls from a lidar digital terrain model michael shank tagis unit, west virginia division of environmental protection highwalls are an artificial landform that results from mining activity. The caterpillar team uses an evaluation of your geological data and site plan to determine how best to use a cat highwall mining system. What is highwall miningmining coal from a visible, horizontal or inclined coal seam, making rectangular, parallel, unsupported entries, with unmanned cutter head and coal transport system, which is remotely controlled from a mining unit positioned outside the drive, in front of highwall. Therefore, study of highwall mining system application in indonesia is needed in.
Therefore, study of highwall mining system application in indonesia is needed in order to increase the recovery rate of coal mining in indonesia. Highwall mining economic and environment friendly mining. Auger and highwall mining has evolved from a secondary production method to. Nc machinery assumed responsibility for the sales, marketing, and product support of the expanded cat mining products, which include draglines, unit rig mining trucks, room and pillar and longwall equipment, electric rope and hydraulic shovels, highwall miners, drills, belt systems, and various other lines of support equipment. Box cut, strip cuts and spoil piles humphrey, 1984. Highwall mining of thick, steeply dipping coala case. Highwall mining is a technique for attaining additional coal recovery after the economic strip limit is reached in surface mining. Highwall mining is an important surface coal mining method, and. Leigh or of united states department of the interior bureau of mines. The selfcontained cat highwall mining system offers an innovative method for extracting coal from exposed seams in a multitude of applications. Highwall mining is an efficient, proven and durable method for mining coal from exposed horizontal seams producing an average of 110 000 tonnes 120,000 tons of coal per month in coal seams up to 300 m 1,000 ft in seams dipping up to 8 degrees recovering up to 70 percent of inplace coal. Highwall mining refers to a mining method to recover coal from a surface mine that has reached.
Specalog for hw300 highwall mining system aehq680201. In many seams where the seam strength ucs basis is less than 7mpa to 8mpa, this level of recovery exceeds the 52% to 58% recovery that might be achieved without backfill. It trams easily from entry to entry and discharges coal in tight spaces. Pdf as semiunderground and semisurface mining methods, the auger and highwall mining. Highwall mining, an extension to open cut mining, commonly use auger and continuous highwall mining system. We strive to be the acknowledged leader and preferred partner in helping our clients control their water infrastructure and inherently succeed in their mining. Highwall safety videos browse our collection of highwall safety videos. Cat highwall mining system the industryleading cat highwall mining system is a new, lowcost addition to traditional mining methods.
Analysis of highwall mining stability the effect of multiple. Rock properties and structural geoloo of rock are the vital parameters for. Highwall fall near miss photos only of a near miss highwall fall. Mine safety and health administration highwall hazard recognition cmnm dvd includes both english and spanish versions if your job puts you on or near highwall. 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. 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. The falls consisted of the roof coal and rock binder and often caused both color video subsystems to become ef fectively unusable because of the accumulation of strata on the top of the tscm. Other highwall applications include previously augered areas and trench mining. Geotechnical issues on application of highwall mining system inindonesia t. Highwall mining could not be justified to produce the high ash product. Find, read and cite all the research you need on researchgate. The system can produce 40 000110 000 tonnes 44,000 to 121,000 tons of coal per month, depending on seam height. This paper described the characteristics of the highwall mining system and discussed the appropriate highwall mining system application in weak geological condition, indonesia. Tech mining engineering degree synopsis a number of high wall mining methods were developed over the years to mine coal reserves exposed on the high walls created during surface mining.
Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many technological, economic. This report discusses the highwall mining method, its suitability for the coal seams in the state of west virginia, and the potential improvement to mining safety. This is a rather specialized type of mining which is only applicable where a seam is exposed at the highwall of an open cut mine which has reached the economic limit for open cut mining. The machine is generally operated from a bench that is created by the removal of overburden material and coal by way of contour surface mining around the perimeter of a coal seam. Active quarry sectional view of highwall panels pattern of long and. Aai personnel have the highwall mining experience and expertise to optimize coal recovery while promoting safety at your coal property. We have provided consulting for highwall mining operations in australia and india as well as currently providing consulting services to highwall mining. 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. Hw300 highwall mining system environmental and operational conditions the cat hw300 is designed for following environmental and operating conditions. Studying the method of mining o f highwall 50 years university of mining and geology st. Highwall article about highwall by the free dictionary.
Highwall concerns mining technology mining news and. In this method of mining, an unmanned cutter module is driven underground and operated in front of the highwall. Figure 44 twodimensional view of moura mine highwall operation. A detailed look at coal mining and the highwall method. With over 20 years experience operating systems in the coalfields of australia, usa, south africa and india, addcar highwall mining. Using a video imaging andor a gamma ray sensor andor other geo radar system like a coalrock interface detection sensor the operator can see ahead projection of the seam rock. Footprints of underground, surface, auger and highwall mining occuring in any coal seam in west virginia. Pdf viewer, creator, manipulator, printer, and manager. The cat highwall mining system is a strong, selfpropelled machine that operates on contour benches as narrow as 18 m 59 ft. Lukhele paper written on project work carried out in partial fulfilment of b. Highwall mining systems can be used to recover this coal.
Commonwealth mining llc is a highwall mining services co. Highwall mining is a proven technology in usa and australia to extract the blocked coal in thin nonworkable seams and the coal blocked in the highwall of opencast mines. The moura mines current addcar highwall coal mining operation in central. A geotechnical rationale for the design of south african. And christopher mark highwall mining continues to grow in importance as a coal production method from u. An optional rightangle conveyor system discharges coal on the right or left side on narrow benches. It distills the body of knowledge that characterizes mining engineering as a disciplinary field and has subsequently helped to inspire and inform generations of mining. Application of highwall mining system in weak geological condition. Highwall concerns mining technology mining news and views.
Surface auger mining at rietspruit mine services pty ltd by m. It distills the body of knowledge that characterizes mining engineering as a disciplinary field and has subsequently helped to inspire and inform generations of mining professionals. When the last economic cut has been made with a surface mining operation, the coal seam. Instead of an auger hole, an entry into the coal seam is made by. Highwall mining of thick, steeply dipping coala case study in. 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.
It appears that upwards of 60 highwall miners are presently in operation, and they may account for approximately 4% of total u. Longwall mining overview introduction underground coal. Extraction and characterization of mining highwalls from a. For twopass highwall mining of seams greater than 4m in thickness, it was found that by using a 3% cement stabilised paste backfilled that cures to 1mpa crushing strength.
Surface reclamation andor rehabilitation costs after highwall mining are minimized due to the. Longwall automation mine decommissioning openpit highwall survey screening. Contract highwall mining llc springtown frank justice 1857535 rockholds 173,4 9 85 blue gem 18 jellico 24 0 0 0 0 contract highwall mining llc imperial hollow mine frank justice 1857536 rockholds 96,984 9 84 blue gem 20 0 0 0 0 contract highwall mining. Extracting coal affordably and safely highwall mining is a proven primary method for mining coal from exposed seams. Highwall mining on the black creek seam in each mining block will begin as soon as the black creek coal removal by surface mining has been completed and has advanced into the next block. Kentucky highwall safety alert this alert is a result of several highwall failures that have occurred within the state, one of which resulted in the loss of one of our fellow miners. Designs for highwall safety bunds in open cut coal mines. Apr 27, 2016 high wall mining system use auger enclosed inside the push beam that prevent the mined coal from being contaminated by rock debris during the conveyance process. A geotechnical rationale for the design of south african open cast coal mine highwalls by r. Ventilation of highwall mining to control methane concentration at the moura mine page i abstract methane is a highly explosive gas released during coal mining that presents an imminent problem when mixed with oxygen in regard to maintaining safe working conditions in underground and highwall mines. Highwall miners highwall mining, superior highwall miners. With ahs highwall mining systems, mine operators can mine previously unrecoverable coal seams of various heights and slopes and unmatched seam penetrations. The effect of highwall mining and augering needs to be considered for longterm highwall performance. Teleoperation of a highwall mining system by august j.