Mining system and method featuring a bread loaf shaped borehole
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United States of America Patent
Stats
-
Sep 2, 2003
Grant Date -
Aug 22, 2002
app pub date -
Feb 22, 2001
filing date -
Feb 22, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for cutting a borehole substantially in the shape of a bread loaf within a mine includes four cutting systems. The first cutting system is a pair of three-armed, counter rotating, cutting heads which remove material from the mine face in a substantially vertical plane. The second cutting system is a pair of rotating cutting drums which follow the pair of counter rotating cutting heads. The third cutting system is a substantially vertical, rotating cutting head which removes the kerf formed at the ceiling or roof portion of the borehole. The fourth cutting system is a plow which both removes the kerf at the bottom of the borehole and directs the mined material to a conveyor system to remove the mined material from the mine.
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