REAL-TIME AUTOMATIC MONITORING SYSTEM AND METHOD FOR COAL-ROCK POWER DISASTER ACOUSTIC-ELECTRICITY GAS

摘要

A real-time automatic monitoring system and method for coal-rock power disaster acoustic-electricity gas, belonging to the field of mine safety and monitoring and control. The system is composed of an acoustic wave probe (1), an electromagnetic antenna (2), a gas sensor (3), a current sensor (4), a voltage sensor (5), an acoustic-electricity gas synchronization monitor (6), a communication substation (7), a substation power source (8), a monitoring centre machine (10), etc. The system receives acoustic waves, electromagnetic radiation and gas signals by means of the acoustic-electricity gas synchronization monitor (6), and can access the voltage sensor (5) to monitor the energization of a power cable and access the current sensor (4) to monitor the working of an electromechanical device. The system identifies the movement of the probe (1) and the antenna (2) and the mining activity through sudden changes of the acoustic waves, electromagnetic and gas signals and the characteristics of acoustic-electricity spectrum in combination with the changes of current and voltage signals. The system pre-warns an abnormal area in front of a working face and the danger of a coal-rock power disaster through effective acoustic waves and electromagnetic signal changes and spectrum characteristics in combination with gas signal change characteristics. The present invention can be applied to the monitoring of an abnormal area in front of a working face and the monitoring and pre-warning of coal and gas outbursts and rock bursts.