Impact of Rough Wall Surface on Electromagnetic Wave Propagation Characteristics in Mine Tunnels

Article Preview

Abstract:

In this paper ,the mine tunnels is regard as wave-guide which contains kinds of un-beneficial medium, we have study the formulas of electromagnetic waves propagation attenuation and roughness attenuation, the relations between propagation attenuation and roughness and frequency were simulated. The results show that the influence of propagation attenuation in lower frequency is more obvious, and roughness attenuation is increased rapidly as roughness of coal mine tunnels increasing. But tilted attenuation is stronger than roughness attenuation as propagation frequency increasing.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 301-303)

Pages:

1417-1421

Citation:

Online since:

July 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Delogne P. Leaky Feeders and Subsurface Radio Communications [M]. London: Peter Peregrinus Ltd, 1982: 107-109.

Google Scholar

[2] Jacard B, Maldonado O. Microwave modeling of rectangular tunnels[J]. IEEE Transactions on Microwave Theory and Techniques, 1984, 32: 576-581.

DOI: 10.1109/tmtt.1984.1132731

Google Scholar

[3] SUN J P , CHENG L F. Analysis of electromagnetic wave propagation modes in rectangular tunnel[J]. Chinese Journal of Radio Science, 2005 , 20(4): 522-525.

Google Scholar

[4] SUN J P , FENG D W, 2 and ZHENG Z W , et al. Equivalent transmission line analysis for the wave2guiding characteristics in rectangular tunnels[J]. Journal of China Coal Society, 2008 , 33(12): 1438-1441.

Google Scholar

[5] Liu Ye, Wei En-Bo, and Hong Jie-Li, et al. Microwave backscattering from the sea surface with breaking waves[J]. Chinese Physics, 2006, 15(9): 2175-2179.

DOI: 10.1088/1009-1963/15/9/045

Google Scholar

[6] REN Xin-cheng, Guo Li-xin. Study on Characteristics of Electromagnetic Wave Transmission from 2-D fBm Fractal Rough Surface of Layered Medium [J]. JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY, 2009 , 31(1): 233-237.

Google Scholar

[7] PAN Tao, L I Yan-dong. Dust in mine roadway affected to transmission features of electric magnetic wave[J]. Coal Science and Technology, 2007, 35(7): 97-99.

Google Scholar

[8] SONG Z, ZHANG J H, HUANG Y. Antennas and Radio Wave Propagation[M]. Xidian University press, 2003: 231-232.

Google Scholar

[9] Jin Wu Kong. Electromagnetic Wave Theory[M]. Beijing: Publishing House of Electronics Industry, 2003: 102-180.

Google Scholar