Types of mining methods || coal mining methods YouTube
#0183;#32;Here in this video we have discussed different types of mining methods including coal mining methods: Mining: Opencast Mining Auger Mining Strip
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#0183;#32;Here in this video we have discussed different types of mining methods including coal mining methods: Mining: Opencast Mining Auger Mining Strip
Longwall mining. Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically m (2 ft 0 in3 ft 3 in) thick). The longwall panel (the block of coal that is being mined) is typically 34 km ( mi) long and 250400 m (8201,310 ft) wide.
This method recovers a higher proportion of the coal deposit than underground mining as all coal seams are exploited 90% or more of the coal can be recovered. Large opencast mines can cover an area of many square kilometres and use very large pieces of equipment, such as draglines, power shovels, large trucks, bucket wheel excavators and conveyors.
#0183;#32;Auger mining uses largediameter drills mounted on m obile equipment to bore into a coal seam. Holes are horizontally drilled at regular intervals to depths of as much as 1,000 feet. As the cutting
#0183;#32;The most economical method of coal extraction for surface mines is the electric shovel or drag line. The most economical form of underground mining is the long wall, which is a shear blade that runs along sections of the coal seam. Many coals extracted from both surface and underground mines require washing in a coal preparation plant.
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Highwall mining is a coal mining method for recovery of outcropped coal by mechanical excavation without removal of overburden. A continuous miner with single or multiple augers/cutting heads is operated underground and controlled remotely by crew located outside.
2 #0183;#32;Although the United States has the vast coal resource described in the previous chapter, perhaps as much as 4 trillion tons, the key issue for policy makers is the amount of coal that is economically is not a fixed quantity, but depends on the geological resource, the market price, and the cost of mining. The particular characteristics of the coal mining industry create unique
#0183;#32;Coal mining Coal mining Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground 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
The underground mining methods we use include room and pillar, narrow vein stoping and largescale mechanised mining. Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them which are gradually cut away as the work proceeds. We use this for mining coal.
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#0183;#32;The mining companies will also have less material to be backfilled in the earth, and hence the lowerimpact mining can be one of the affordable means of extraction. How can the mining companies reuse the mining waste? The mining companies also account for producing a large number of debris every year like tailings, broken rocks, and dirty waters.
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#0183;#32;Here in this video we have discussed different types of mining methods including coal mining methods: Mining: Opencast Mining Auger Mining Strip
Shortwall Mining. This method of mining was developed in the late 1960''s to take advantage of the then recent development of suitable hydraulic longwall supports, coupled with the productivity and low capital cost of continuous miners and shuttle cars.
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section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. 1. Underground Mining Methods Classification of Underground Mining Methods Mineral production in which all extracting operations are conducted beneath the ground
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