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Mining Publication: Electromagnetic Detection of Trapped Miners
Keywords: Signalling Through-the-earth communications systems
Original creation date: February 1984
Authors: JA Durkin
Peer Reviewed Journal Article - February 1984
Download PDF Document (2.90 MB)
NIOSHTIC2 Number: 10003559
IEEE Commun Mag 1984 Feb 22(2):37-46
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 were used to generate models of expected signal and noise distributions as found above these mines. 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% false-alarm rate, the expected probability of detecting a miner's signal from a depth of 1,000 ft is 54%; at 500 ft it is 95%. These depths exceed the actual depths of 90% and 50%, respectively, of U.S. coal mines. Sensitivity studies showed that at a depth of 1,000 ft, the probability of detection will improve approximately 2% for each decibel of increase in signal-to-noise ratio.
Image of publication Electromagnetic Detection of Trapped MinersPeer Reviewed Journal Article - February 1984
Download PDF Document (2.90 MB)
NIOSHTIC2 Number: 10003559
IEEE Commun Mag 1984 Feb 22(2):37-46
See Also
Adaptive-Noise-Cancellation Techniques for Through-the-Earth Electromagnetics: Volume III
Basic Tutorial on Wireless Communication and Electronic Tracking: Technology Overview
Electromagnetic Location Systems for Metal/Non Metal Mines
A Magnetic Communication System for Use in Mine Environments
Passive Fiber Optic System for Locating, Tracking, and Communicating with Personnel in Coal Mines
Propagation of EM Signals in Underground Mines
Through-The-Earth Wireless Real-Time Two-Way Voice Communications
Two-Way, Through-the-Earth Emergency Communication System for Trapped Miners and the Surface
Ultra-Low Frequency Through-the-Earth Communication Technology
Wireless Through-The-Earth Modeling and Support
Page last reviewed: November 16, 2015
Page last updated: November 16, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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