Gate Design Key to Bump Control

Details

• Personal Author:
  Barton T ; Campoli, Alan A. ; DeMarco M ; Gauna M ; Van Dyke F
• Description:
  Two different gate road designs, located within the Pocahontas No. 3 Seam on Island Creek Coal property, were evaluated by the U.S. Bureau of Mines using two detailed instrument arrays and in-mine observations. The state-of-the-art instrumentation arrays consisted of stainless steel, borehole-platened flatjacks used to indicate changes in pillar stress, coal extensometers for measuring pillar dilation, convergence stations for measuring roof-to-floor closure, a differential roof-sag indicator, and a differential floor-heave indicator. A permissible data acquisition system was employed to continuously monitor coalbed stress and roof-to-floor convergence in hazardous areas. The resulting improved gate road design will permit high-extraction, retreat longwall mining through bump-prone conditions, with the minimal risk of destructive face bumps. Insight into what determines the ultimate strength of coal pillars and the effects of yield zone confinement at pillar failure have further advanced the current knowledge of bump prevention based on longwall gate road design. [Description provided by NIOSH]
• Subjects:
  Communication Mining Noise Noise, Occupational Occupational Health Safety Workplace
• Keywords:
  Coal-mining Control-technology Engineering-controls Geology Injury-prevention Longwall-mining Mining-industry Retreat-mining Room-and-pillar-mining Underground-mining
• Series:
  Mining Publications
• ISSN:
  1040-7820
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  54-58
• Volume:
  95
• Issue:
  9
• NIOSHTIC Number:
  nn:10008417
• Citation:
  Coal 1990 Sep; 95(9):54-58
• Federal Fiscal Year:
  1990
• Peer Reviewed:
  False
• Source Full Name:
  Coal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:885965c699b376473fd5bea9a9faf5e315b3af182471100d0d5dbf4bea8f88ab90b261ff526abe972e838c1dda3a9981fcad5bdd5b7300eca905b97559d8df39
• Download URL:
  https://stacks.cdc.gov/view/cdc/219856/cdc_219856_DS1.pdf
• File Type:
  [PDF - 2.74 MB ]