基于声发射信号的煤岩体失稳过程监测与定位方法研究

ccording to the coal and rock failure instability process monitoring difficult, proposed the TDOA positioning method based on optimized EKF, soon AE sensor arrangement for transmitting array, signal acquisition of coal rock instability process sound, coordinate and positioning of coal and rock. At the same time on acoustic emission signal collected by the sensor are filtered to build positioning system and establishing the coordinate positioning model in the laboratory. The simulation was carried out in the laboratory, acquisition and analysis of coal and rock mass acoustic emission signal and the positioning. The experimental results show that the monitoring system can filter out the instability of coal and rock mass acoustic emission in the process of signal, and the accurate localization of coal and rock mass, has realized the real-time monitoring of coal and rock.