Report of Investigations 9567: In Situ Stress at the Lucky Friday Mine (in Four Parts): 3. Reanalysis of Overcore Measurements from the Star Mine

Details

• Journal Article:
  Spokane, WA: U.S. Department of the Interior, Bureau of Mines, RI 9567
• Personal Author:
  Beus, Michael J. ; Larson, Mark K. ; Whyatt, Jeffrey K.
• Description:
  U.S. Bureau of Mines researchers reviewed an in situ stress estimate developed from measurements of overcore strain taken at test sites on the 7300 and 7500 levels of the Star Mine near Mullan, Idaho. Although the field measurements of overcoring strain were found to be useful, significant deficiencies were found in the stress estimation procedure. A new stress estimate was developed incorporating statistical methods and an improved understanding of stress concentration factors for interpreting overcore strains recorded by doorstopper cells. Spatial variability of overcore strains and the implications for stress field variability were explored. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Air Pollution Coal Coal Mining Dust Engineering Hazardous Substances Mining Occupational Health Safety Workplace

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• Keywords:
  Mining-industry; Underground-mining; Rock-bursts; Rock-falls; Rock-mechanics; Geology
• Source:
  Spokane, WA: U.S. Department of the Interior, Bureau of Mines, RI 9567, 1995 Jan; :1-36
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• ISSN:
  1066-5552
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  Idaho ; OSHA Region 10 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  SRC - Spokane Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  36 pdf pages
• NIOSHTIC Number:
  nn:20024019
• NTIS Accession Number:
  PB95-271276
• Federal Fiscal Year:
  1995
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9773191de2f8feec2b9152c371eec1b35765b1c292cd6039be3c3818a9c94dbc2bfaa5e93412dbae5884b3362e47a4722db094fc1078a0a1107b48e3141ba357
• Download URL:
  https://stacks.cdc.gov/view/cdc/10165/cdc_10165_DS1.pdf
• File Type:
  [PDF - 1.99 MB ]