Yang Zhigang. THE RELATIONSHIP BETWEEN THE FIELD INTENSITY ATTENUATION OF RADIOWAVE PENETRATION AND THE DIP ANGLE OF COAL SEAM[J]. COAL GEOLOGY & EXPLORATION, 1997, 25(5): 52-54.
Citation: Yang Zhigang. THE RELATIONSHIP BETWEEN THE FIELD INTENSITY ATTENUATION OF RADIOWAVE PENETRATION AND THE DIP ANGLE OF COAL SEAM[J]. COAL GEOLOGY & EXPLORATION, 1997, 25(5): 52-54.
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THE RELATIONSHIP BETWEEN THE FIELD INTENSITY ATTENUATION OF RADIOWAVE PENETRATION AND THE DIP ANGLE OF COAL SEAM

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    • Abstract
  • The phenomenon of "penetration shadow anomaly" which is appeared during the radiowave penetration at the No.2220 full mechanized face in Dongpang mine,Xingtai,is analyzed.It is believed that the field intensity of radiowave penetration is attenuated with the increase of the dip angle of strata at the same face,and the resulted "penetration shadow anomaly" is unrelated with the concealed structures.
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