The Principle of Longwall Top Coal Caving (LTCC) - - vimore.org

The Principle of Longwall Top Coal Caving (LTCC)

The Principle of Longwall Top Coal Caving (LTCC)

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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 meters (20 feet). Following a conventional cut with a shearer to about 3 m (9.8 ft) the roof supports move forward and allow the caving of the top coal behind the roof supports a second conveyor mounted gob-side. This special LTCC method enables increased coal reserve recovery for only an incremental additional cost. This animation shows how it works.



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