Information Circular 9406: Longwall Gate Road Stability in Four Deep Western U.S. Coal Mines

Details

• Personal Author:
  Barron, Lance R. ; DeMarco, Matthew J. ; Kneisley, Richard O.
• Description:
  Over the past decade, the U.S. Bureau of Mines (USBM) conducted longwall gate road stability studies at four mines in the Book Cliffs and Wasatch Plateau Coalfields of Utah. These operations are characterized by multiple-seam mining, abruptly varying cover depths to 914 m (3,000 ft), and massive rigid sandstone units in the main roof or floor. Such conditions encourage severe bumping, roof instability, and occasional floor heave problems. Various gate road configurations have been employed to alleviate these problems. Though the mines have comparable basic conditions, lithologies and qualities of the immediate roof, floor, and seam are different in each mine, and often vary in a single mine. Gate road systems which mitigate hazards in one mine may prove inappropriate in another or for different areas of the same time. This report relates the geology of the coalfields; describes the location, geologic setting, specific mining conditions, operating history, and the USBM field study and results or conclusions for each mine; summarizes the relative performance of the gate road systems, and emphasizes the need for site-specific geotechnical data to evaluate gate road conditions and performance. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Mining Occupational Health Safety
• Keywords:
  Beds-geology Coal-mining Formations Gate-road-systems Geotechnical-engineering Longwall-gate-roads Longwall-mining Mines-excavations Mining-engineering Overburden Reinforcement-structures Roofs Supports Underground-mining

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• Series:
  Mining Publications
• Subseries:
  Information Circular
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  Colorado ; OSHA Region 8 ; Utah
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRC - Denver Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  102 pdf pages
• NIOSHTIC Number:
  nn:10012430
• NTIS Accession Number:
  PB95-128781
• Citation:
  Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9406, 1994 Jan; :1-84
• Federal Fiscal Year:
  1994
• Peer Reviewed:
  False
• Source Full Name:
  Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9406
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:25bc0f8792b395e3d65aa9744eb309c889e13be2a10e57f629e24a277cd3f819de7ddabb11177ab234521eb2516185126f0363ceb10fa931d9cc416097aa8f13
• Download URL:
  https://stacks.cdc.gov/view/cdc/206344/cdc_206344_DS1.pdf
• File Type:
  [PDF - 6.23 MB ]