Deep cut-ground control and worker safety in coal mines.
Bauer ER; Bise CJ
1999 SME Annual Meeting, March 1-3, 1999, Denver, Colorado, preprint 99-109. Littleton, CO: Society for Mining, Metallurgy, and Exploration, 1999 Mar; :1-7
The trend in underground room-and-pillar mining is to employ remote control continuous mining machines and extended cuts, 12 m (40 Ft) deep or more. This system of coal extraction, adopted by over 435 mines, can create additional worker-safety hazards. To address the ground control and worker-positioning hazards, a combination of statistical analyses and numerical modeling was conducted. Initially, the reported roof-fall incidents and fatalities were reviewed to delineate the ground-control hazards. Then, the application of the Coal Mine Roof Rating (CMRR) for estimating safe extended-cut depths was evaluated. Finally, computer modeling to predict roof displacements during extended-cut mining was completed. The paper describes the results of these studies and their impact on the safety of extended-cut mining.
Mining-industry; Underground-mining; Room-and-pillar-mining; Ground-control; Ground-stability; Statistical-analysis; Accident-analysis; Accident-prevention; Accident-statistics; Injury-prevention; Longwall-mining; Extended-cut-mining
1999 SME Annual Meeting, March 1-3, 1999, Denver, Colorado, preprint 99-109