Research on change and correlation of monitoring parameters foracoustic-electric-gas system in outburst mine

In order to study on monitor parameters and correlation of acoustic emission intensity-electromagnetic radiation intensity-gas concentration and K1, based on the damage mechanics of the continuous medium, the paper analyzed the principles of the acoustic emission and the electromagnetic radiation technology applied to monitor the coal and gas outburst. A KJ838 sound-electricity-gas system was applied to the tracking monitoring of No.11224 transportation and heading roadway in Jinjia Mine. The results showed that the KJ838 sound-electricity-gas system could timely respond the environment variation in the mine roadway, including the acoustic emission, electromagnetic radiation, gas density characteristics variation occurred during the blasting period. Meanwhile,there was a good correlation between the conventional predicted index K1 values. The analysis results could provide the references to the late determination on the real time multi parameters monitoring and early warning model of the coal and gas outburst and the establishment of the early warning platform.