NIOSHTIC-2 Publications Search

Antenna arrangement investigation for through-the-earth (TTE) communications in coal mines.

Authors
Yan L; Sunderman C; Whisner B; Damiano N; Zhou C
Source
2015 IEEE Industry Applications Society Annual Meeting: 51st IAS Annual Meeting, October 18-22, 2015, Addison, Texas. Piscataway, NJ: Institute of Electrical and Electronics Engineers, 2015 Dec; :2015-MIC-0666
NIOSHTIC No.
20047550
Abstract
The MINER Act of 2006 requires the installation of post-accident, two-way, communications and electronic tracking systems for all coal mines. A through-the-earth (TTE) wireless communication system sends its signal directly through the overburden of a mine but can have limitation relative to performance, reliability, and transmission range. The National Institute for Occupational Safety and Health (NIOSH) conducted experiments at a coal mine for different TX/RX antenna arrangements using a NOISH TTE prototype system. This system uses multi-turn, relative small TX loop antenna instead of single turn, relative large TX loop antenna. The objectives of the test are to evaluate the performance of the system, to evaluate the path loss and optimize working frequency for the mine, to characterize surface and underground electromagnetic noise, and to investigate the feasibility of horizontal TTE communication and its advantage over vertical TTE communications. In this paper, the performance of a magnetic loop TTE communication system was evaluated for various antenna arrangements. A fairly large communication range was achieved for horizontal TTE transmission. While vertical TTE communication between underground and the surface may be restricted by factors like deployment challenges of the surface TX antenna and short transmission ranges, horizontal TTE communication within the tunnel can reach relative large distances and can thus establish a more reliable communication. Moreover, the combination of vertical and horizontal TTE communication may provide a way to considerably increase communication range.
Keywords
Mining-industry; Underground-mining; Communication-systems; Mine-disasters; Mine-fires; Coal-mining; Electromagnetic-fields; Electromagnetic-interference; Author Keywords: Loop antenna; Magnetic field; Mine communication; Through-the-earth; VLF/ELF
Contact
Lincan Yan, National Institute for Occupational Safety and Health, 626 Cochrans Mill Road, Pittsburgh, PA, United States
CODEN
CIASDZ
Publication Date
20151214
Document Type
Conference/Symposia Proceedings
Email Address
lyan1@cdc.gov
Fiscal Year
2016
ISBN No.
9781479983933
ISSN
0093-9994
NIOSH Division
PMRD
Priority Area
Mining
Source Name
2015 IEEE Industry Applications Society Annual Meeting: 51st IAS Annual Meeting, October 18-22, 2015, Addison, Texas
State
PA; TX; NJ
Page last reviewed: May 11, 2023
Content source: National Institute for Occupational Safety and Health Education and Information Division