Electromagnetic wave propagation in an asymmetrical coal seam

Journal Article · Sat Feb 01 04:00:00 EST 1986 · IEEE Trans. Antennas Propag.; (United States)

DOI:https://doi.org/10.1109/TAP.1986.1143809· OSTI ID:5702997

Hill, D A

Electromagnetic wave propagation in a coal seam is analyzed for the case where the surrounding floor and roof rocks have different electrical properties. Numerical results are presented for the attenuation rate and field distribution of the dominant mode. Even when the roof and floor conductivities are different, the vertical electric field and the horizontal magnetic field are the dominant components, and they are nearly constant within the coal seam. The results have application to mine communication and remote sensing of coal seams.

• Research Organization: Electromagnetic Fields Div., National Bureau of Standards, Boulder, CO 80303
• OSTI ID: 5702997
• Journal Information: IEEE Trans. Antennas Propag.; (United States), Journal Name: IEEE Trans. Antennas Propag.; (United States) Vol. 34:2; ISSN IETPA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
ASYMMETRY
COAL DEPOSITS
COAL MINES
COAL SEAMS
COMMUNICATIONS
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
GEOLOGIC DEPOSITS
LONGWALL MINING
MAGNETIC FIELDS
MINE ROADWAYS
MINERAL RESOURCES
MINES
MINING
PHYSICAL PROPERTIES
RADIATIONS
REMOTE SENSING
RESOURCES
ROCKS
ROOFS
TUNNELS
UNDERGROUND FACILITIES
UNDERGROUND MINING
WAVE PROPAGATION