Electromagnetic environments in roadways of underground coal mines and a novel testing method

作     者：SUN, Jiping WANG, Fuzeng PAN, Tao TANG, Liang WANG, Shuai MING, Yanjie 

作者机构：state key laboratory of coal resources & safe miningchina university of mining & technologybeijing 100083china state key laboratory of coal resources & safe miningchina university of mining & technologybeijing 100083china college of information science & technologyagriculture university of hebeibaoding 07 china software testing centerbeijing 100048china 

出 版 物：《Mining Science and Technology》 (矿业科学技术（英文版）)

年 卷 期：2010年第20卷第2期

页      面：244-247页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China (No.50674093) the National Scientific and Technological Support Projects (No.2006BAK03B00) and the Pingdingshan Coal Mine Group 

主　　题：roadway electromagnetic environment electromagnetic radiation electromagnetic interference 

摘      要：The electromagnetic environment of laneways in underground coal mines is an important area for the design of new electronic products,as well as a fundamental space for mine monitoring,surveillance,communications and control *** investigation of electromagnetic interference in coal mines is essential for the enhancement of performances of these *** this study,a new field method is provided in which radiated emission tests in coal mine laneways have been carried *** conclude that:1) the wiring motor vehicles can radiate interference with a bandwidth up to 1 GHz and with an amplitude 10 dBμV/m higher than the background noise;2) the PHS(Personal Handy phone System) mobile communication system can cause interference 40 dBμV/m higher than the background noise;3) an interference 25 dBμV/m higher than the background noise can be generated during the communication at a working bandwidth of 48.8 MHz;and 4) power cables,battery vehicles as well as mechanical and electrical dong rooms have little effect on the electromagnetic radiation environment in coal mine tunnels.