Medium Frequency Signal Propagation Characteristics of a Lifeline as a Transmission Line in Underground Coal Mines

Details

• Personal Author:
  Damiano, Nicholas W. ; Li J ; Matetic, Rudy J. ; Reyes MA ; Whisner BG
• Description:
  Underground coal mines in the United States of America are required to install lifeline (LL) cable inside escapeways to guide miners out of a mine when visibility becomes poor due to heavy smoke. Some LLs consist of single or multiple steel conductors covered with a protective plastic outer layer. Research has shown that this type of LL can be a good conductor to guide a medium-frequency (MF) communication system signal to travel over large distances. To understand the MF propagation characteristics of an LL, National Institute for Occupational Safety and Health researchers took measurements on a section of LL in a coal mine, and obtained propagation parameters for analysis. The measurement data show that MF signals have a low attenuation which can enable the use of an LL for communication throughout a mine. The propagation parameters measured are presented in this paper. [Description provided by NIOSH]
• Subjects:
  Automation Coal Coal Mining Ergonomics Mining Occupational Health Safety
• Keywords:
  Author Keywords: Attenuation Measurement Coal-mining Communication-systems Communication Systems Electromagnetic Propagation Impedance Measurement Mine-disasters Mine-fires Mining-industry Mining Industry Propagation Losses Propagation Measurement RF Signals Transmission Line Measurements Underground-mining

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• Series:
  Mining Publications
• ISSN:
  0093-9994
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  New Jersey ; OSHA Region 2 ; OSHA Region 3 ; OSHA Region 6 ; Pennsylvania ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  52
• Issue:
  3
• NIOSHTIC Number:
  nn:20048222
• Citation:
  IEEE Trans Ind Appl 2016 May-Jun; 52(3):2724-2730
• Contact Point Address:
  Jingcheng Li, National Institute for Occupational Safety and Health, 626 Cochrans Mill Road, Pittsburgh, PA, United States
• Email:
  jingcheng.li@cdc.hhs.gov
• Federal Fiscal Year:
  2016
• Peer Reviewed:
  True
• Source Full Name:
  IEEE Transactions on Industry Applications
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0d74f4fd6b1c115d2a7b7664569a009fc8c02249cedd9513dbcb440c32f82f5a35554640fc374099864306feb5bc7cd4ece923d75590a54b3701a90795600793
• Download URL:
  https://stacks.cdc.gov/view/cdc/228259/cdc_228259_DS1.pdf
• File Type:
  [PDF - 839.33 KB ]