Abstract: In this paper, to realize the accurate identification and timely warning of coal and gas outburst, a new early warning index system was built, and a real-time warning system was designed. The early warning index system includes real time indexes, dynamic indexes, and fundamental indexes. The real time indexes mainly refer to volatility, frequency, concentration amplification and moving average, which reflectes the phenomenon and essence of gas abnormal effusing, and the dynamic indexes include abnormal drilling, crustal stress display, concentrated stress, geological structure, etc, which mainly reflectes anomaly of gas pressure and crustal stress, while the fundamental index mainly reflectes the anomaly of coal seam geology. Then, based on C/S frame, the real time warning system of coal and gas outburst was designed, through which distributed approach of data, multi-channel expression and grad- ing diffusion of warning information can be achieved. Finally, the early identification and real time warning of outburst were simulated according to the historical outburst data of one mine. The results show that the warning level of outburst can be achieved to response level three hours earlier, which can meet the requirements of identification and warning of coal and gas outburs in coal mine.

Key words: coal and gas outburst, comprehensive identification, index system, real-time warning