describe longwall mining shearer

Shearer – Mining Science and Technology - LongWall …

A shearer pulls itself along the face by using a sprocket to engage with the haulage system which is fixed to the length of the AFC. The haulage track of a shearer can be seen in the photo on the left. Generally the shearer traction system is powered hydraulically. There […]

(PDF) Performance Prediction for Longwall Shearers and ...

times when the shearer operated in the high-speed zone in the longwall. It means that the actual web It means that the actual web depth of the cutting drums were probably substantially less than ...

Introduction to Longwall Mining and Subsidence ver2

In longwall mining, a panel of coal, typically around 150 to 300 metres wide, 1000 to 3500 metres long and 2 to 5 metres thick, is totally removed by longwall shearing machinery, which travels back and forth

Coal Shearer - RitchieWiki

A coal shearer is an electrically driven hydraulic cutting machine also referred to as a power loader, stage loader or shear loader used in the longwall mining of coal.The average coal shearing machine is 15 meters long, weighs in excess of 90 tons and can travel up to speeds of 10 to 14 meters a minute.

| EL3000 Longwall Shearer |

Your shearer is the most critical part of your longwall production process. That's why high-performance longwall operations demand shearers that deliver the highest productivity, availability and reliability.

Whayne Walker | Longwall Mining Equipment For Sale ...

Longwall mining is a challenging, potentially dangerous process that requires the use of the best equipment to ensure efficient, safe coal extraction. If you operate a longwall mining operation in Kentucky, Southern Indiana, West ia or Southeastern Ohio, Whayne Walker is your one-stop heavy equipment headquarters.

Coal Mining Methods - EMFI

Coal Mining Methods Underground Mining Longwall & Room and Pillar Mining Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground, with room-and-pillar being the traditional method in the United States. Both methods are well suited to extracting the relatively flat coalbeds (or coal seams) typical of the United States. Although widely used in other ...

Longwall mining demands safety and reliability in …

The principle of longwall mining is the use of a large cutting head or shearer which traverses the coal seam breaking it up and depositing the coal onto an armoured conveyor to transport the coal ...

mining equipment shearer description - nenss.nl

Coal mining is the process of extracting coal from the ground, The longwall shearer has a face of 1,000 feet, As the longwall mining equipment moves forward, . [ Live Chat] China Intelligent Mining 2*750 Kw Shearer - China Shearer,

Mineral Processing,Longwall Coal Mining,Coal Washing …

HMG100/250-PBD super low coal shearer is a new type machiner for mechanized coal mining working face and high-grade mechanized coal mining working face.

China Longwall Shearer, Longwall Shearer Manufacturers ...

Sourcing Guide for Longwall Shearer: China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: coal shearers, coal shearer, coal mining ...

Large Specalog for EL3000 Longwall Shearer, AEHQ6800-01

normal mining operations, ensuring that the shearer can operate reliably at the installed power ratings. Loads of to 175% ensure that the ranging arm design meets the requirements of the most demanding applications. Input torque, losses and output torque are monitored during the test, as are bearing, gear and shaft temperatures. Dedicated sensors monitor vibration. Oil samples are ...

Longwall Mining Automation - IEEE Control Systems Society

L ongwall mining is a method for extracting coal from underground mines. The mining technology involves a longwall shearer, which is a 15-m long, 100-t

longwall - YouTube

2013-07-25· The New ® GH800B Longwall Plow System: ... Longwall system with shearer - Tổ hợp thiết bị lò chợ với máy liên hợp - Duration: 3:56. hamlomdc 23,970 views. 3:56. Exploring the ...

longwall shearer operator job description for coal mines ...

longwall shearer operator job description for coal mines. coal mine short wall section main function of beam . A long wall operator is responsible to cut the coal faces and mine the coal.

Shearers | Equipment Selection | Longwall | underground …

LONGWALL mining EQUIPMENT SELECTION c) Shearers. Although this section should strictly be titled "coal cutting machines", in most of the world, and certainly in Australia, this involves shearers. The only other cutting machines of note with modern longwalls are ploughs which are dealt with briefly in the Longwall part of the Fundamentals of Coal Mining module of this web site. There are no ...

Describe Longwall Mining Shearer - Mining Machinery

Longwall Mining Revolvy2011 7 29 Longwall mining is a form of underground coal and smoother parameters for tracking the longwall shearer been used to describe a coal mine operation.

Longwall shearers - SKF

Longwall shearers Traversing coal seams takes a heavy toll When longwall shearers fail prematurely, downtime costs start limiting the low-cost advantages of longwall mining.

Longwall Shearers Information | Engineering360

Longwall mining is a type of mining where aggregate, typically coal, is extracted in panel sections of approximately 0.6-9.0 m by 200-400 m by 3-4 km. The width of the panel referred to as the face of the seam is undercut by another piece of mining equipment, such as a roadheader or continuous miner .

Underground eLearning Longwall Course Catalog

• Describe what a Shearer does in a Longwall system. • Identify major components on a Shearer. • Identify what is used to control the Shearer. • Identify the control switches, isolators/circuit breakers, JNA display screen, and audible alarm on a Shearer. • Identify the electric motors and controller case on a Shearer. • Identify main mechanical components for the haulage system ...

Longwall Mining | Mining | Minerals - Scribd

TYPES OF LONGWALL MINING 2. Longwall Advance Mining TYPES OF LONGWALL MINING There are two methods used to cut a web of coal from the longwall face The "Bi-Directional" (bi-di) method The shearer cuts a fresh web of coal each time it traverses up and down the coal face The "Uni-Directional" (uni-di) method The shearer cuts a web of coal from one side of the face to the other and then returns ...

Joy Longwall Shearers - Underground Mining | ...

Joy introduced the first all-electric shearer in 1976. Since then, Joy shearers have been working in the world's most productive longwall mines and in the most demanding conditions.

Cutting Machines - Shearers | Introduction | underground …

longwall mining : equipment : cutting machines - shearers : Equipment Cutting Machines - Shearers . Shearers are by far the most commonly used cutting machines, both in Australia and overseas. A shearer consists of a machine body containing electric motors, hydraulic equipment and controls which is mounted over the AFC. Horizontal cutting drums are mounted on the face side of the machine ...

mining equipment shearer description - afropulseent.co.za

Longwall mining is a form of ... The coal is cut from the coalface by a machine called the shearer ... Compared to manual control of the mine equipment, ...

Joy Longwall Shearers — HTS-mining

Joy introduced the first all-electric shearer in 1976. Since then, Joy shearers have been working in the world's most productive longwall mines and in the most demanding conditions.

v118n10a9 Fully mechanized longwall mining with two ...

Fully mechanized longwall mining with two shearers: A case study All previous studies showed that the application of two shearers can increase the output and efficiency of a working

Longwall mining - Wikipedia

Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6 – 1.0 m thick). The longwall panel (the block of coal that is being mined) is typically 3 – 4 km long and 250 – 400 m wide.

Longwall Mining Equipment - Adobe

that far outstrips the shearer when mining thin and medium seams. Their reliability, high-productivity and ability to Their reliability, high-productivity and ability to mine in-seam make them the ideal choice for longwall mining medium and thin seams.

Shearer | mining | Britannica.com

In coal mining: Longwall mining …by continuous longwall miners called shearers or plows (see photograph). The roof is supported by mechanized, self-advancing supports called longwall shields, which form a protective steel canopy under which the face conveyor, workers, and shearer operate.

| Longwall Mining Shearers |

Designed for High-performance Mining Your shearer is the most critical part of your longwall production process. That's why high-performance longwall operations demand shearers that deliver the highest productivity, availability and reliability.