A Review Of Rock Support And Falls In Us Coal Mine Intersections - Preprint 09-132
Organization: Society for Mining, Metallurgy & Exploration
Jan 1, 2009
The support of the roof in coal mines remains a critical safety issue with 3 fatalities from roof falls in 2007 and 430 injuries from roof falls in 2006. A snapshot survey by the authors of room design and support details as well as unplanned falls of ground in the industry revealed some useful data concerning support use, seam details, fall dimensions, bolt lengths and spacing and the stand-up time.