Study on outburst early warning model based on gas geological features

In order to accurately reflect the danger of coal and gas outburst in the coal mining face and gateway driving face, a gas geological theory, mine disaster early warning theory, computer information technology and safety system engineering analysis method were comprehensively applied. From the gas geological environment of the outburst danger in the mining and driving faces,an identification and early warning index system of the outburst risk was established to reflect the gas geological features and the index system would include the index of the geological structure features, seam parameter index and gas type index. A stepwise identification and the extremum determined principle of the multi index were applied to construct the risk identification and early warning model of the outburst and to establish the early warning system of the coal and gas outburst based on the gas geological features. With the site application and effect investigation, the accuracy of the early warning was 99.3% and the early warning effect was obvious. The results showed that the early warning system established could objectively reflect the actual outburst danger of the face and could have the flexibility and high practicality.