longwall top coal caving mining

  • The Principle of Longwall Top Coal Caving (LTCC) YouTube

    Apr 30, 2015· Caterpillar has extensive experience in the design of roof supports for specific mining conditions. Cat Longwall Top Coal Caving (LTCC) roof supports allow mining of seams seams thicker than 6

  • Author: Caterpillar Global Mining
  • Longwall Top Coal Caving Introduction underground COAL

    Longwall Top Coal Caving. Longwall top coal caving (LTCC) is a special type of longwall mining applicable to very thick seams (greater than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining

  • Viewpoint Mining Magazine Longwall Top-Coal Caving
    How It WorksAutonomous OperationLTCC Around The WorldA Productive AlternativeIn traditional longwall mining, the shearer travels along the face of the coal seam, cutting as it goes and dropping coal onto an armored face conveyor (AFC) that carries it to a belt or crusher. When a cut is complete, the whole system moves forward one step at a time until the seam is finished.The LTCC method adds another conveyor behind the roof supports, which are equipped with an extended canopy and a sliding door that protects the second conveyor. When the shearer advances, the coal lef...
  • Caving mechanisms of loose top-coal in longwall top-coal

    Today, the top-coal caving longwall mining is the major mining method for thick seam coal mining in China. In the Datong coal district, the annual production is 1.5 million metric tons per panel. The top-coal caving longwall mining has attained outstanding achievements in coal mines with favorable conditions.

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  • longwall top coal caving Mining -- HOT mining 浩特矿业

    Longwall Top Coal Caving (LTCC) is a special designed longwall mining methodfor very thick seams (thickness is more than 4.5m) where good quality coal is being left because "conventiona l" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height. It enables an increased recovery for only an incremental

  • Longwall Top Coal Caving,Top Coal Caving,Top Coal Caving

    Longwall Top Coal Caving (LTCC) is a special designed longwall mining method for very thick seams (thickness is more than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height.

  • Longwall Top Coal Caving (LTCC) technology Yancoal

    Yancoal introduced the Longwall Top Coal Caving (LTCC) mining technology to Australia at its Austar mine in 2006. Developed in China, top coal caving uses a modified long wall mining system. LTCC allows the excavation of thick coal seam...

  • LONGWALL TOP COAL CAVING underground COAL

    equipment for a Longwall Top Coal Caving face. Photo courtesy of Joy Manufacturing Company Pty Ltd A brief description of longwall top coal caving (LTCC) is included at the end of the Longwall section of the Fundamentals of Coal Mining module of this web site.

  • Longwall mining Wikipedia
    OverviewHistoryLayoutVentilationEquipmentComparison with room and pillar methodAutomationEnvironmental impacts

    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 (2 ft 0 in–3 ft 3 in) thick). The longwall panel (the block of coal that is being mined) is typically 3–4 km (1.9–2.5 mi) long and 250–400 m (820–1,310 ft) wide.

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  • Longwall Top Coal Caving (LTCC) Mining Technology

    Not all the coal would be recovered, but recoveries of 75-80% of the full seam in the block are achievable. The system also allows the initial mining height to be reduced to a preferred working height without losing coal. The Top Coal Caving is a Modified Longwall Mining system. Equipment Selection of Longwall Top Coal Caving Mining

  • Longwall Top Coal Caving MiningMonthly

    INTERNATIONAL Longwall News brings you two detailed reports on the status of longwall top coal caving in Australia. INTERNATIONAL Longwall News brings you two detailed reports on the status of longwall top coal caving in Australia. LASE Easy storage yard management systems for mining and coal. SPONSORED lase. Putting relationships first

  • 3D numerical modeling of longwall mining with top-coal caving

    Undoubtedly, caving of naturally fractured or blasted top coal under gravity is the most critical factor in determination of mining method-related parameters such as geometry and dimensions of longwall panel, face support and production scheduling.

  • Mining safety of longwall top-coal caving in China

    Longwall top-coal caving technology has developed rapidly in China, in recent years. The application of longwall top-coal caving can double both the productivity and the efficiency of a working face and reduce the cost of production by 30 to 50%. Using standard longwall equipment, annual production

  • Cat Longwall Automation Caterpillar

    White Paper: Efficient Mining of High Longwall Seams Thru Automation of Longwall Top Coal Caving. Longwall mining is an expensive undertaking from the preparation of the site to capital investment in the equipment. That is why longwall owners have high performance expectations, especially in tough economic times when commodity prices are low.

  • Longwall top coal caving mining Zhengyang Song 1

    A 3D particle-based numerical approach to simulate the longwall top coal caving (LTCC) process was proposed, which for the first time the effect of continuous support advance and the face-end

  • Viewpoint Mining Magazine Longwall

    Longwall Top-Coal Caving: A productive and efficient alternative. Longwall mining is one of the most productive ways to produce coal, but longwall mines have trouble efficiently mining seams higher than 6 m (19.6 ft). Longwall Top-Coal Caving can more than double the resource recovery rate of normal longwall equipment working in high seams.

  • Numerical Modeling of Longwall Top Coal Caving Method at

    The preferred mining method for these thick coal seams is the Longwall Top Coal Caving (LTCC). The connection of both the top coal caving and its compactness are still rare; therefore, the

  • Longwall method coal mining Britannica

    In coal mining: Origins of longwall mining. The other principal method of modern mining, longwall mining, had been introduced as early as the 17th century and had found general use by the 19th century, but it had long been less productive than room-and-pillar mining.

  • Cat White Paper: Efficient Mining of High Longwall Seams

    One of the ways longwall mines achieve or exceed their owners’ expectations is through the use of highly efficient Longwall Top Coal Caving (LTCC) technology production, in combination with the extensive use of automation. LTCC remains a seldom used method for mining high seams efficiently and ecologically with sustainable use of deposits.

  • Longwall Top Coal Caving Application Assessment in Australia

    There is an urgent need for implementation of effective thick seam extraction technologies in Australia to improve resource recovery and productivity levels in underground coal mining. The Longwall Top Coal Caving (LTCC) method, which is being used successfully in China, offers a great potential for thick seam extraction in Australia.

  • TOP CAVING Mining Science and Technology

    Longwall Topcoal Caving (TCC) is a method of extraction for underground mining of thick seams. It uses a longwall set-up and natural forces to aid in the winning of coal. With this method of extraction only a single longwall is developed at the foot of the seam. The control of the roof layers at the face is by means of powered supports.

  • Longwall Top Coal Caving How is Longwall Top Coal Caving

    LTCC Longwall Top Coal Caving. Looking for abbreviations of LTCC? It is Longwall Top Coal Caving. Longwall Top Coal Caving listed as LTCC. presentations discuss the latest developments related to longwall mining. Seam height is 8 to 10 meters,

  • Longwall Top Coal Caving Method SlideShare

    Feb 19, 2014· LTCC • Longwall Top coal Caving (LTCC) is a method of extraction for underground mining of thick seams. • It uses a longwall set-up and natural forces to aid in the winning of coal. 4.

  • Longwall Top Coal Caving Application Assessment in Australia

    There is an urgent need for implementation of effective thick seam extraction technologies in Australia to improve resource recovery and productivity levels in underground coal mining. The Longwall Top Coal Caving (LTCC) method, which is being used successfully in China, offers a great potential for thick seam extraction in Australia.

  • Longwall Top Coal Caving How is Longwall Top Coal Caving

    LTCC Longwall Top Coal Caving. Looking for abbreviations of LTCC? It is Longwall Top Coal Caving. Longwall Top Coal Caving listed as LTCC. presentations discuss the latest developments related to longwall mining. Seam height is 8 to 10 meters,

  • The Principle of Longwall Top Coal Caving (LTCC) YouTube

    The Principle of Longwall Top Coal Caving (LTCC) YouTube. Saved from m.youtube. The Principle of Longwall Top Coal Caving (LTCC) Caterpillar has extensive experience in the design of roof supports for specific mining conditions. Posts about Coal mining accidents written by Jeffery Robinette Coal extraction: Coal mine excavator View

  • TOP CAVING Mining Science and Technology

    Longwall Topcoal Caving (TCC) is a method of extraction for underground mining of thick seams. It uses a longwall set-up and natural forces to aid in the winning of coal. With this method of extraction only a single longwall is developed at the foot of the seam. The control of the roof layers at the face is by means of powered supports.

  • Mining Safety of Longwall Top-coal Caving in China

    53 Mining Safety of Longwall Top-coal Caving in China Jian Wu, 1 Yueping Qin, 1 and Minghua Zhai1 1China Univ. of Mining and Technology, 011# Xueyuan Road, Haidian Dist, Beijing 100083, P.R. of China; 2Zhangji Coal Mine, Xuzhou Mining Bureau, Xuzhou 221147, Jiangsu Province, P.R of China ABSTRACT Longwall top-coal caving technology has developed rapidly in China, in recent years.

  • Stress analysis of longwall top coal caving, International

    Jan 01, 2010· Longwall top coal caving (LTCC) is a relatively new method of mining thick coal seams that is currently achieving high productivity and efficiency in application, particularly in China. The technique is similar to traditional longwall mining in that a cutting head slices coal from the lower section of the coal seam onto a conveyor belt installed in front of the hydraulic support near the

  • Longwall Top Coal Caving Method SlideShare

    Feb 19, 2014· LTCC • Longwall Top coal Caving (LTCC) is a method of extraction for underground mining of thick seams. • It uses a longwall set-up and natural forces to aid in the winning of coal. 4.

  • Stress analysis of longwall top coal caving EDEM

    Longwall top coal caving (LTCC) is a relatively new method of mining thick coal seams that is currently achieving high productivity and efficiency in application, particularly in China. The technique is similar to traditional longwall mining in that a cutting head slices coal from the lower section of the coal seam onto a conveyor belt []

  • Top Coal Caving Longwall Maximizes Thick Seam Recovery

    What is Longwall Top Coal Caving? Due to the inherent operational problems and high costs associated with the multi-slicing longwall method, and the legislative requirement from the central government of a 93% (minimum) recovery rate, LTCC was introduced to the Chinese coal industry in 1982 (based on the European soutirage methods).

  • Longwall Top Coal Caving at the Broadmeadow Mine

    May 14, 2019· The adjacent open-cut mine has been mining the full seam section for more than 30 years, investigations and evaluations were made into the Top Coal Caving method and its suitability for the operation. Longwall Top Coal Caving (LTCC) was introduced in 2012.

  • Roof Supports Pennsylvania Long Wall Mining CB Mining

    Roof supports for special applications. Our Longwall Top Coal Caving (LTCC) roof supports allow mining of seams up to 10 m / 32.8 ft. Following a conventional cut with a shearer to about 3 m / 9.8 ft, the roof supports move forward and allow the caving coal to fall via controllable caving shields onto a second conveyor mounted gob-side.

  • Ultra-thick Seam Longwall Mining in China Coal Age

    The disadvantages of top coal caving are that the recovery rate of top coal at both ends of the face is very low and the coal left in the gob is the source for spontaneous combustion. Therefore, the ultra-thick whole seam one slice longwall mining was developed to increase the recovery rate and safety of ultra-thick coal seams in 2009.

  • Peabody North Goonyella Mine

    The mine, located in a remote area of Queensland, produces premium quality, medium-vol, high-strength coking coal with exceptional coking qualities. North Goonyella coal is exported through the Dalrymple Bay Coal Terminal, south of Mackay to global seabourne demand centers.

  • Longwall coal mining,Large angle,Steeply inclined-Beijing

    HOT Mining’s strategic partner, Sichuan Coal Group, and other units to solve the problem of large inclination coal seam mechanization mining, and conducted mechanization mining successfully in the working face with average coal seam angle 38°. After more than 10 years research, it has developed the hydraulic support applied in the steeply-inclined coal seam, with maximum dip angle of 50°.