摘要
矿车的存在改变了煤矿巷道的截面形状和尺寸，从而影响了电磁波传输特性的传输特性。文章对煤矿巷道中矿车对电磁波的影响进行了现场测量，详细分析了测量数据。测量结果表明：电磁波的传输衰减与车厢的长度和传输的频率有关；矿车的存在使电磁波的传输衰减增大；在50～900MHz范围内，电磁波的频率越高、衰减越小，越有利于电磁波的传输。
The existence of mining car changes figure and size of cross section of coal mine laneway, so it influences transmission characteristics of electromagnetic wave. The paper measured the influence of mining car on transmission characteristics of electromagnetic wave in coal mine laneway on the site and analyzed measured data in details. The measuring result showed that transmission attenuation of electromagnetic wave has relation with the length of carriage and the transmission frequency, the existence of mining car makes increase of transmission attenuation of electromagnetic wave. In range of 50-900 MHz, the higher the frequency of electromagnetic wave is and the smaller the attenuation is, the more propitious they are to transmit electromagnetic wave.
出处
《工矿自动化》
2009年第6期21-23,共3页
Journal Of Mine Automation
基金
国家自然科学基金资助项目(50674093)
关键词
巷道
矿车
电磁波
传输特性
衰减
laneway, mining car, electromagnetic wave, transmission characteristics, attenuation
