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"Advance and relieve" mining: a method to mitigate the effects of high horizontal stress on the mine roof.

Authors
Dolinar-DR; Mucho-TP; Oyler-DC; Pablic-J
Source
2001 SME Annual Meeting, February 26-28, 2001, Denver, Colorado, Preprint 01-113. Littleton, CO: Society for Mining, Metallurgy, and Exploration, 2001 Feb; :1-12
Link
NIOSHTIC No.
20021292
Abstract
At a mine in central PA, high horizontal stresses have caused long running roof falls resulting in hazardous conditions for the miners and the premature abandonment of panels. Because of these conditions, the mine requested assistance of the National Institute for Occupational Safety and Health (NIOSH) in utilizing the advance and relieve method to mitigate the affects of horizontal stress on the mine roof. Advance and relieve mining involves the removal of a pillar or a portion of a pillar during development, thereby creating a cave along one side of the panel. Following cave development, the horizontal stress is relieved over the workings adjacent to the cave in the active panel. The mine has used this system in three panels with a significant reduction in stress damage and no large roof falls.
Keywords
Mine-workers; Mining-industry; Coal-mining; Coal-miners; Accident-prevention
Publication Date
20010101
Document Type
Conference/Symposia Proceeding
Fiscal Year
2001
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Source Name
2001 SME Annual Meeting, February 26-28, 2001, Denver, Colorado, Preprint 01-113
State
PA
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