太赫兹波在不同湿度煤层中的传播

Propagation of TerahertzWave in Different Coal Seams

讨论了太赫兹频段电磁波对与不同湿度情况下煤层衰减和反射的情况,通过计算不同湿度的煤层对于电磁波的衰减情况,比较水和煤在相同频段下的反射情况,最后引入不同湿度下煤层反射率的变化。研究结果表明:湿度是影响太赫兹频段电磁波探测煤层的重要因素。湿度越大,频率越高,其衰减程度越大;同时湿度也会影响电磁波的反射率降低的速度,湿度越大电磁波反射率降低的速度越快。

The attenuation and reflection of electromagnetic waves in the terahertz frequency band and coal seams under different humidity conditions are studied.By calculating the attenuation of electromagnetic waves in coal seams with different humidity,the reflection conditions of water and coal in the same frequency band are compared,and finally the change of coal seam reflectivity under different humidity is introduced.The research results show that humidity is an important factor affecting the detection of coal seams by electromagnetic waves in the terahertz frequency band.The greater the humidity,the higher the frequency,and the greater its attenuation.At the same time,humidity will also affect the rate of reduction of electromagnetic wave reflectivity.The greater the humidity,the faster the rate of electromagnetic wave reflectivity decreases.