how to maintain the coal mine machineries

Dec 11, 2018· To qualify forsurface mining, thecoal depositsmust be within 50-80 meters of the surface. The job of aminerprimarily involves removing ‘overburden’— rock, soil, trees etc. – that mix with thecoaldeposits and cover them near the earth’s surface. They need to clear this material so the layer ofcoal…

Working incoal minesis dangerous — miners have to deal with toxic gases, plus the threat of being crushed, drowned, or injured from fires and explosions. Some miners love it. It can be a ...

The longwall method involves using amachinecalled a shearerMechanical cutting machineused toextract coalin undergroundmines. that looks like a hugeplow. The shearer slowly pushes and cuts through thecoalface. It recovers the loosened ore as it advances and lets theroof collapsebehind it. …

Surface MiningForextracting coalwhich lies close the surface, huge drag-lineshovel machines removethe topmost layers of soil and rock, exposing thecoal, which is then removed by smallermachines.Surface miningmay involve removing sections of hills or top layers of a flat surface area.

MineCutting and ChannelingMachineOperators operatemachinerysuch as longwall shears, plows, and cutting machines to cut or channel along the face or seams ofcoal mines, stone quarries, or otherminingsurfaces to facilitate blasting, separating, or removing minerals or materials fromminesor from the Earth’s surface. Includes shale planers.

Working inminingis risky business. Earlier this year, a man was killed in an accident at a copperminein Australia. Another accident at acoal minein southwest China claimed 22 lives. In fact, China has some of the most dangerousminesin the world, and authorities have scrambled to try to enforce safety rules.

Close-up.Underground and Surface Mines.Coalwas the fuel that stoked the Industrial Revolution in the 19 th century. Extractingcoalfrom underground or open-pitmines…

Aftercoalcomes out of the ground, it typically goes on a conveyor belt to a preparation plant that is located at theminingsite. The plant cleans and processescoalto remove dirt, rock, ash, sulfur, and other unwanted materials, increasing the heating value ofthe coal. Source: Energy Information Administration. Next > Transportingthe Coal.

Coal mining-Coal mining- Undergroundmining: In undergroundcoal mining, the working environment is completely enclosed by the geologic medium, which consists ofthe coalseam and the overlying and underlying strata. Access tothe coalseam is gained by suitable openings from the surface, and a network of roadways driven in the seam then facilitates the installation of service facilities ...

According to the Bureau of Labor Statistics, theminingindustry consists of five major segments:coal mining, gas and oil extracting, metal oremining, non-metal mineralminingand supporting activities such as resource transportation. Each segment requires the use of specific equipment, but there are several types ofmining equipmentthat are ...

Coal miningis the process of extractingcoalfrom the ground.Coalis valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries usecoalas a fuel for extraction of iron from iron ore and for cement production.

Dec 09, 2011· From 1986 to 2010, there were 10 multiple fatality explosions in undergroundcoal minesin the U.S. These explosions increased the fatality rate from 44.0 to 81.3 in 2006 and from 23.5 to 80.4 in 2010 (per 100,000 employee hours worked, undergroundcoal).

Jan 30, 2014·The largest machines in mining. ... The most common largemachineryseen oncoal minesaround the world, draglines, are all fairly similar in size, although one has pushed the boundaries – …

Maintaining the equipment and power systems used 24/7 at the Yallourncoal minesite to feed the Yallourn power station is critical to Victoria’s ongoing electricity supply. Supplying approximately 22% of the state’s power needs, and 8% of the National Electricity Market, EnergyAustralia’s Yallourn power station provides an essential base ...

MiningTransportation & The Tools ofCoalPreparation Devices related to the transportation ofcoalfrom themineto processing facilities to rail loading and finally to …

The operation time ofcoal mine machineryand equipment is generally very long, and the working environment is very bad.So it is very easy to break out and affect the process of production.The failure of mechanical equipment will directly affect the effectiveness and safety ofthe coal mine, so it is necessary to check andmaintain the coal...