Decreasing coal bump risk through optimal cut sequencing with a non-linear boundary element program

Details

• Personal Author:
  Heasley, Keith A. ; Zipf, R. Karl, Jr. ; Heasley, Keith A. ; Zipf, R. Karl, Jr.
• Description:
  In room-and-pillar coal mining, violent coal bumps can occur during the retreat mining phase when stress levels in pillars adjacent to the gob area reach their maximum. Proper mining sequences can decrease the risk of bumps. This U.S. Bureau of Mines paper describes a nonlinear boundary element program, MULSIM/NL, used to evaluate cut sequences for retreat mining that decrease the coal bump risk. Program MULSIM/NL features six material types (linear and nonlinear) and an energy subroutine to obtain energy release rate (ERR) values for a mining sequence. The ERR gauges the coal bump risk and the relative desirability of different mining sequences. ERR studies with MULSIM/NL suggest the Olga Mine method's superiority for retreat mining in bump-prone conditions over other methods, such as single-split and fender, pocket and wing, or open ending. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Environmental Monitoring Ergonomics Mining Occupational Health Safety Stress, Psychological
• Keywords:
  Analytical-processes Coal-mining Coal-processing Environmental-control Environmental-engineering Environmental-stress Ground-control Ground-stability Mathematical-models Mining-industry Retreat-mining Rock-bursts Rock-mechanics Room-and-pillar-mining Structural-analysis Underground-mining

  More +
• Series:
  Mining Publications   ; Mining Publications  
• ISBN:
  9789061911234
• Publisher:
  A.A. Balkema
• Document Type:
  Text
• Genre:
  Journal Article ; Proceedings ; Journal Article ; Proceedings
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center ; PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• NIOSHTIC Number:
  nn:10008625
• Citation:
  Rock mechanics: contributions and challenges: proceedings of the 31st U.S. Symposium, June 18-20, 1990, Colorado School of Mines, Golden, Colorado. Hustrulid WA, Johnson GA, eds. Brookfield, VT: A.A. Balkema, 1990 Jan; :947-954
• Editor(s):
  Hustrulid WA; Johnson GA ; Hustrulid WA; Johnson GA
• Federal Fiscal Year:
  1990
• Peer Reviewed:
  False
• Source Full Name:
  Rock mechanics: contributions and challenges: proceedings of the 31st U.S. Symposium, June 18-20, 1990, Colorado School of Mines, Golden, Colorado
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5261937c302b0562e24a26d941ba6e084d1334c2d87c2b2f03969a2ab0296c21dbdfab6d4c8436c87ce23530a075fd8651df58adbaf8a55bd474489e088614fb
• Download URL:
  https://stacks.cdc.gov/view/cdc/219874/cdc_219874_DS1.pdf
• File Type:
  [PDF - 2.11 MB ]