Influence of Mine Tunnel Wall Humidity on Electromagnetic Waves Propagation | Zendy

Lingfei Cheng | Zendy; Lili Zhang | Zendy; Jie Li | Zendy

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Influence of Mine Tunnel Wall Humidity on Electromagnetic Waves Propagation

Author(s) -

Lingfei Cheng,

Lili Zhang,

Jie Li

Publication year - 2012

Publication title -

international journal of antennas and propagation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.282

H-Index - 37

eISSN - 1687-5877

pISSN - 1687-5869

DOI - 10.1155/2012/734379

Subject(s) - attenuation , humidity , permittivity , conductivity , electromagnetic radiation , materials science , geotechnical engineering , acoustics , dielectric , geology , meteorology , optics , physics , optoelectronics , quantum mechanics

High moisture in mine tunnel can cause the change of the permittivity and conductivity of tunnel walls, therefore influence the characteristics of electromagnetic waves propagation. This paper analyzes the mechanism of humidity influencing the permittivity and conductivity and attenuation of electromagnetic waves propagation in the circular tunnel and rectangular tunnel. The study result shows that, in the interest frequency range, the change of permittivity caused by humidity has little effect on propagation attenuation, but the effect on the conductivity change cannot be ignored. When the humidity is greater than a certain value, the attenuation will be increased significantly

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