Study on Characteristics and Noise Filtering of Electromagnetic Radiation Interference Signals of Excavation Surrounding
In this paper, the characteristics of the electromagnetic radiation (EMR) interference signals of excavation surrounding in coal mine and its frequency spoetrum are analyzed, and noise filtering of the interference signals are performed with digital filter. The results show that the running of electromeehanieal equipments of excavation surrounding has effects on EMR signals of coal or rock, and the EMR. intensity has a large fluctuation especially when the EMR monitor near to the electromechanieal equipments, which interferes the EMR signals of coal or rock seriously. The main frequency bands of different interferenee signals are determined with FFT, which can be used for noise filtering, and the interference signals can be removed successfully with digital filter. The study of EMR interference signals characteristics and its filtering has an important theoretical and realistic significance for improving the veracity and reliability of EMR forecasting teehnique of coal or rock dynamic disasters.
interference signals electromagnetic radiation excavation surrounding frequency spectrum analysis noise filtering
SONG Xiaoyan WANG Enyuan LI Yanna LI Zhonghui LIU Zhentang JIN Shuqing
School of Safety Engineering,China University of Mining and Technology,Xuzhou 221008,Jiangsu,China;S Fenghuangshan Coal Mine,Jincheng Mining Group,Jincheng 048006,Shanxi,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1315-1318
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）