Water-jet assisted drum-type mining system
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United States of America Patent
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-
Jun 25, 2002
Grant Date -
N/A
app pub date -
Mar 31, 2000
filing date -
Apr 2, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drum-type miner having a plurality of water jet nozzles which cut independently of the mechanical bits is disclosed. The drum-type miner may configured in either a hard-head or a ripper-chain design. The unique combination of mechanical and hydraulic cutting results in higher rates of penetration and improved productivity. Moreover, because the mining face is pre-scored by the water jets, the amount of wear on both the mechanical bits and the motors may be significantly reduced.
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