Performance evaluation of electromagnetic techniques for the location of trapped miners

Details

• Personal Author:
  Durkin, John
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  "The Bureau of Mines has conducted field studies in coal mines throughout the United States to determine the effectiveness of electromagnetic techniques in locating miners trapped underground following a mine accident. Data from these tests have been used to generate models of expected signal and noise distributions as found above mines throughout the coalfields. These distributions have aided in placing the expected performance of a through-the-earth electromagnetic communications technique into a probabilistic framework. Results show that at a 10-pct false alarm rate, the expected probability of detecting a miner's signal from a depth of 1,000 ft is 54 pct
  
  at 500 ft it is 95 pct. These depths exceed the actual depths of 90 pct and 50 pct, respectively, of U.S. coal mines. Sensitivity studies have shown that at a depth of 1,000 ft, for every 3 db of improvement in signal-to-noise ratio, the probability of detection increases 6 to 8 pct." - NIOSHTIC-2
  
  NIOSHTIC no. 10002571
  
  
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  ii, 30 numbered pages
• NIOSHTIC Number:
  nn:10002571
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ab01f3c3af28a2253a58e2111516404ef05b3342e234d1a4084d40d86adfd8fa054f5b7d3e884f3b9c403664c6308a06c29ddd122e553d762d687347a2629c43
• Download URL:
  https://stacks.cdc.gov/view/cdc/9618/cdc_9618_DS1.pdf
• File Type:
  [PDF - 1.67 MB ]