中文摘要：

矿井巷道中不可避免存在机车、长列传送带、罐笼和金属支护等物体,这些物体的存在一定程度上影响了巷道中电磁波的传播。将巷道看作波导,通过实验测量和拟合的方法,研究电磁波在传送带巷道中的衰减。实验结果表明：电磁波的衰减与长列传送带的存在和接收频率有关;传送带的存在使电磁波的衰减增大;电磁波的频率越高,衰减越小;900 MHz是研究矿井无线通信的最佳频率;在宽度大于高度的巷道中,H-H模式比V-V模式更适合做通信方式。结论为煤矿井下巷道无线通信提供更有力的支持,对未来进一步研究巷道中电磁波的传播提供参考价值和现实指导意义。

英文摘要：

Unavoidably, mining tunnels have locomotives, long conveyor belts, cages, metal mesh supporting and so on these objects, The existence of these objects affects electromagnetic wave propagation in tunnels to some extent. The text regards the tunnel as a waveguide, through experimental measurement and fitting method to study on attenuation of electromagnetic wave in conveyor belt roadway. The experimental results show that： the attenuation of the electromagnetic wave is connected with the existence of long conveyor belts and the received frequency; The existence of conveyor belts increases the attenuation of the electromagnetic wave; the higher the frequency of the electromagnetic wave is, the smaller the attenuation is; 900 MHz is the optimum frequency to study mine wireless communication; In the roadway with width greater than height, horizontal mode is more suitable for communication than vertical mode. The results in this paper provide more powerful support for the coal mine roadway wireless communication, and provide reference value and practical significance for the further study of the electromagnetic wave propagation characteristics.