Highwall mining pdf files

In this method extraction of coal is done from a series of parallel entries driven in the seam from the face of the high. Application of highwall mining system in weak geological. Newlands highwall failure oct 2015 2014 event timeline 17390 file a page 1 of 10 published on dnrme disclosure log rti act 2009. How to combine pdf files into one document lifewire. The use of highwall mining systems has increased substantially in openpit coal mines.

A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The caterpillar team uses an evaluation of your geological data and site plan to determine how best to use a cat highwall mining system. Highwall stability is the major ground control related safety concern, and operators are required to develop and follow an appropriate highwall mining ground control plan. The use of highwall mining systems has increasingly come into play in the us and australia. Introduction auger and highwall mining has evolved from a secondary production method to become an integral part of many surface mining operations throughout the u. The system can produce 40 000110 000 tonnes 44,000 to 121,000 tons of coal per month, depending on seam height.

This safety alert provides safety advice for the nsw mining industry. December 2018 potential fall of excavator over highwall. This court has jurisdiction over the subject matter of this action under section 309b of the cwa, 33 u. It contains extensive help files that provide more background on the research upon which design formulas are based. Highwall safety pdf files browse our collection of highwall safety files in pdf. Application of highwall mining system in weak geological condition. Commonwealth mining llc is a highwall mining services co.

There was evidence of frequent visitation on top of the highwall, including trails and campsites. Highwall safety videos browse our collection of highwall safety videos. A significant amount of coal is blocked in non workable thin seams, in the highwalls, below surface dwellings in these opencast mines. At the time of the accident, the highwall mining machine was being operated in the sewell a seam, located near rupert, greenbrier county, west virginia. In this method of mining, an unmanned continuous miner is. Coal mine fatality on tuesday, october 7, 2014, a 31yearold utility worker, with years of mining experience, was killed after he crawled 37 feet into an entry mined with a highwall mining machine to retrieve a broken cutterheadchain from the mining machine. Avoid undercutting andor over steepening of the highwall or bank slope. Designs for highwall safety bunds in open cut coal mines.

Reaching pit limits with available coal in the barrier pillars. Highwall failure and misfire department of energy and. 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. Highwall mining is an important coal mining method. In general, those are systems of underground coal mining with mine entries directly communicating to the surface. Our highly skilled experts are eager to assist you to determine the feasibility of your highwall mining project. Despite some limitations in the free edition of this app, including a maximum file size of 2. Highwall miner 1 2 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. Auger mining in the appalachians began sometime in the mid 1940s when. Use mining methods that ensure highwall and bank stability and safe working conditions. Highwall stability remains the major safety concern during highwall mining. Professional highwall mining services, llc was formed in 20 and the company has seen steady growth. Venue lies in the western district of virginia pursuant to 28 u. Apr 29, 2016 almost all the coal is produced from open cut mines in indonesia.

It trams easily from entry to entry and discharges coal in tight spaces. Shm52 highwall miner is operated by bundy auger mining, inc. It is used where overburden depth exceeds economical recovery. Peng are research associate, graduate student and charles t. Pdf as semiunderground and semisurface mining methods, the auger and highwall mining methods are used to extract the remaining coal reserve after. The highwall mining method originated in the usa in the 1940s. Thus, the strategy was to try to mine from the bottom of the lower waynesburg seam up to the 48in cutting limit, leaving about 6 in of top coal. Its exciting to hear of a startup at a time like this.

Npi emission estimation technique manual for mining. Highwall mining is a hybrid of surface and underground mining technologies that is used to recover coal that is otherwise uneconomical due to. Highwall mining is a remotely controlled mining method which extracts coal from the base of an exposed highwall. Highwall mining is an important surface coal mining method, and it may account for approximately 4% of total u. 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.

New software for sizing pillars for highwall mining. However, there are geotechnical considerations with highwall mining that require careful engineering to realize the full economic and safe potential of highwall mining. Highwall stability is the major ground control related safety concern. No radar in place a 15mt standoff bund had been put in place. Analysis of highwall mining stability the effect of. The highwall was 2535 feet tall with a slope of more than 50 degrees along most of its length. This program covers the requirements associated with the selection, maintenance, training and use of personal protective equipment ppe used to protect individuals from actual or potential safety and health risks. Highwall mining, an extension to open cut mining, commonly use auger and continuous highwall mining system. 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. Three major geomechanical issues are associated with highwall mining shen and duncan fama 1. Welcome to cdc stacks analysis of highwall mining stability. 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. The company services a total of 16 highwall miners from of a total of 40 machines working in the us and the number.

Blood quarry highwall and stockpile dangers the simsons learn valuable safety lessons around highwalls and stockpiles. 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. The cat highwall mining system is an agile, selfpropelled machine that operates on contour benches as narrow as 18 m 59 ft. Highwall safety safety training powerpoint presentations. 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.

The tscm is capable of cutting to a maximum height of 48 in above the floor. The ice thaws and the cycle begins again which in turn compromises the stability of the highwall that can result in highwall failure. Highwall stability is the overriding concern in highwall mining. High wall mining is a remotely operated mining method to extract coal from thin seams or underlying seams in the high wall. Geotechnical investigations are required to quantify the mass and substance properties of soils and rocks within the mining horizons. Click add files and select the files you want to include in your pdf. Cat highwall mining system the industryleading cat highwall mining system is a new, lowcost addition to traditional mining methods. Extracting coal affordably and safely highwall mining is a proven primary method for mining coal from exposed seams.

Highwall stability, surface mining 1 paper presented at the 1990 mining and reclamation conference and exhibition, charleston, west virginia, april 23. I saw an opportunity within the highwall mining industry that i felt like would progress as the years went on. The main activities carried out at underground coal mines that could lead to emissions to air, water, and land, or transfers of npi substances, are as follows. A read is counted each time someone views a publication. Large specalog for hw300 highwall mining system, aehq680202. Use r to convert pdf files to text files for text mining. Pdf on account of natural restrictions like protection to village, road, electric lines, important structure existing on surface in mining zone and. Refer to the help section for more detailed instructions.

An optional rightangle conveyor system discharges coal on the right or left side on narrow benches. The miner was contacted in a pinch point between a post and a section of. The cat highwall mining system is equipped with a comfortable, climate controlled, pressurized cab that offers full line of sight to the highwall, strip pit, support staff and support equipment. Geotechnical issues on application of highwall mining system. Jim, first of all, congratulations on the formation of the company. Highwall mining 1 free download as powerpoint presentation. The mining machine operated during two twelve hour shifts. The smith gap surface mine consists of multiple surface coal mining and reclamation operations including surface contour, area mining and highwall mining.

Recently, the mining operation has been conducting an average of one highwall mining machine move per month. Highwall mining cutter head bucyrus the box conveyor sections provide a more robust platform for pushing the head forward into the coal, and contain two. Introduction high wall is the unexcavated face of exposed overburden and coal in a a surface mine. Highwall article about highwall by the free dictionary. The help files also contain suggestions for highwall mining through old auger holes and for closeproximity, multiplesplit highwall mining. Highwall mining cutter head bucyrus the box conveyor sections provide a more robust platform for pushing the head forward into the coal, and contain two screw conveyor segments that carry the.

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. In its basic application, highwall mining is a technique utilized after. Highwall mining systems can be used to recover this coal. Basic functionality is available without a fee, while an adfree experience can be had with inapp purchases. 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. If playback doesnt begin shortly, try restarting your device. Highwall and low wall stability are essential during open cut mining. Firstly, due to its flexibility and mobility, it is easier to recover smaller blocks of coal, which. Highwall mining is a proven primary method for mining coal from outcropping horizontal seams. You can merge pdfs or a mix of pdf documents and other files. Correctly designed and costeffective highwall bunds are essential for safety in large open cut coal mines.

This video shows an experienced truck driver training a new employee about the dangers of highwalls. The moura mines current addcar highwall coal mining operation in central. Almost all the coal is produced from open cut mines in indonesia. Ground control plans for highwall mining should specify hole width, web pillar width, barrier pillar width and number of holes between barriers.

Neither core drilling nor other reliable geologic information was available for the site. As a consequence of open cut mine application, a great deal of coal is left out in the highwalls of the minedout pits. This oftenupdated app combines a large number of pdf files from your android device, as well as many other useful features. Naslr hands out awards for land reclamation in the spring of 2015, as a result of antelope mines monitoring program, it was found that a golden eagle nest, previously near the top of the. Click, drag, and drop to reorder files or press delete to remove any content you dont want. The mine safety and health administration requires. The plans usually specify the following geotechnical parameters. Therefore, study of highwall mining system application in indonesia is needed in order to increase. Highwall mining systems a chm system after caterpillar inc. Pdf extraction design of highwall mining in india to recover locked.

The highwall mining machine is owned and operated by south fork coal company, llc. Highwall hazard recognition englishespanol if your job puts you on or near highwall operations, you need to be especially careful. What is highwall mining mining coal from a visible, horizontal coal seam, by making. The cut coal is transported by conveyors behind the miner to the. Over 10 million scientific documents at your fingertips.

Capable of full operation with a three to fourman crew, the cat highwall mining system. How to merge pdfs and combine pdf files adobe acrobat dc. Specalog for hw300 highwall mining system aehq680201. As soon as the transportation dolly is removed from beneath the highwall mining machine, it is lowered, so maintenance and disassembly may continue. Recently introduced in europe and canada, first highwall mining operations will start in 20 in canada many design techniques are developed in u. Addcar highwall mining systems have produced in excess of 100mt of coal and is the leader in maximising resource recovery and cost effectiveness for our clients.

Proper pillar design is essential to maintain highwall stability and to prevent entrapments. At the time of the accident, the highwall mining machine was operating at the pocahontas highwall mine property msha id 4609096 in the pocahontas no. Geotechnical issues on application of highwall mining. Jul aug sep 2014 risk assessment for intro of highwall mining.

The hazards of operating mobile plant in proximity to edges of highwalls at open cut coal mines was highlighted when an 85 tonne excavator slipped over theedge of a highwall. Yes, not really an r question as ishouldbuyaboat notes, but something that r can do with only minor contortions use r to convert pdf files to txt files. It appears that upwards of 60 highwall miners are presently in operation, and they may account for approximately 4% of total u. Select up to three search categories and corresponding keywords using the fields to the right. Mine fatality on thursday, march 7, 2019, a 38yearold miner with 10 years of mining experience received fatal injuries while he was working on the pad of a highwall mining machine hwm.

Highwall fall near miss photos only of a near miss highwall fall. Ground control plans for highwall mining should specify hole width, web pillar width, barrier pillar width and number of holes. New software for sizing pillars for highwall mining the use of highwall mining systems figure 1 has increased substantially in openpit coal mines. If you continue browsing the site, you agree to the use of cookies on this website.