Demonstration of longwall mining in a steeply dipping coal seam. Research report, September 1977-May 1986

Technical Report · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5754700

Kennedy, M R; Reschke, L M

This report describes the demonstration of longwall mining in a seam dipping 27 deg to 34 deg. Equipment was selected on the basis of capability, compatibility, and cost. The longwall equipment operated very well on the steep pitch with an average equipment downtime of 21.9%. Coal handling out by the face was a problem that caused an additional downtime of 19.5%. Development for the panels proved to be the major problem in the economics of longwall mining on a steeply dipping seam. During the first 9 months of operation, the longwall averaged 71.9 tons per man-shift (TPMS) and development averaged 0.6 TPMS. for an overall average of 14.1 TPMS.

• Research Organization: Snowmass Coal Co., Palisade, CO (USA)
• OSTI ID: 5754700
• Report Number(s): PB-88-102975/XAB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012030* -- Coal
Lignite
& Peat-- Underground Mining-- (1987-)
COAL DEPOSITS
COAL MINING
COAL SEAMS
COLORADO
FEDERAL REGION VIII
GEOLOGIC DEPOSITS
INCLINATION
LONGWALL MINING
MINERAL RESOURCES
MINING
NORTH AMERICA
PRODUCTIVITY
RESOURCES
UNDERGROUND MINING
USA
VENTILATION