Early Warning Technology of Gas Emission Features and Application

There was an obvious abnormal gas emission phenomenon existed in the outburst danger area in Xinyuan Company.In order to analyze the abnormal inf ormation of the gas emission and to provide reference information to the mine outburst prevention and control work, gas emission feature early warning technology and system were applied to analyze the gas emission features of the different outburst danger area during the mine production process .According to the mine conditions an d the gas emission research achievements as well as the present gas emission advance technology, with the "three rate methods" and the site tracing verification, two e mission features indexes were determined and when the critical value was 0.8 and 0.6, the critical values could have good suitability.The effect investigation showed th at the early warning outburst accurate rate of the indexes would reach to 79.7%, the no outburst occurred rate with the early warning was 100%.The gas emission featu res early warning technology could accurately reflect the outburst danger of the coal mining face and the application effect in Xinyuan Company was good.