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Microseismic data analysis of failure occurrence in a deep, western U.S. coal mine : a case study
Filetype[PDF-552.39 KB]


Details:
  • Personal Author:
    Kneisley, R. O. (Richard O.)
  • Corporate Authors:
    United States. Bureau of Mines.
  • Description:
    "Microseismic activity observed both in the laboratory and underground indicates that a quiet period, associated with the closure of existing fractures and strongly influenced by coal seam microstructure occurs prior to coal bumps. Field studies conclude that coal mine bumps occur against a background of this so-called microseismic calm. This Bureau of Mines report summarizes microseismic activity associated with face bumps and floor bursts in a deep, western U.S. coal mine. Results conclude that while bumps are often accompanied by panel-wide increases in microseismic activity, bumps are not only preceded by a localized decrease in activity, but occur within these quiet zones. The results of this study concluded that microseismic activity may be applicable to the global detection of potential bump-prone zones, but that future studies are necessary to confirm these findings and to improve the techniques for evaluating stress control effectiveness." - NIOSHTIC-2

    NIOSHTIC no. 10006817

  • Subject:
  • Document Type:
    Report
  • Place as Subject:
  • Collection(s):
    National Institute for Occupational Safety and Health
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
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