矿井射频能量对雷管安全性的影响  

Influence of radio frequency energy on the safety of blasting caps in the mine

作　　者：田子建[1] 王帅[1] 张立亚[1] 明艳杰[1] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《中国矿业大学学报》2011年第1期18-22,共5页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(50674093)

摘　　要：建立了煤矿井下射频设备与雷管间安全距离的计算模型,分析了模型中各参量的取值,得出射频设备与雷管间的安全距离计算公式.基于该模型,分析了射频发射设备的功率和工作频率变化对安全距离的影响.规定了煤矿井下射频设备与雷管之间的本安距离,在本安距离条件下,得出矿井射频设备的最低本安发射功率为255 mW,即只要发射功率不超过此功率,射频设备就不会对雷管带来安全隐患,并得出射频设备在不同工作频率下的本安发射功率.A model for the safe distance between radio frequency（RF） transmitters and blasting caps in coal mines was established.Model parameters were identified and a working formula for calculating the safe distance was developed.The effects of variation in the RF transmitter power and working frequency on the safe distance were obtained.The intrinsically safe distance between an RF transmitter and blasting caps in underground coal mines was identified.This is true below the intrinsically safe distance.The minimum intrinsically safe transmission power was found to be 255 mW.Below this power level transmissions do not threaten the safety of the blasting caps.Different frequencies have different intrinsically safe transmission powers.

关 键 词：矿井 电雷管 射频能量 传输线 安全距离 

分 类 号：TD65[矿业工程—矿山机电]