Sensibility Analysis of Outburst Prediction Sensitive Indexes in Guqiao Coal Mine

Coal and gas outburst is a complicated dynamics phenomenon. The different prediction indexes and critical values are adaptable to different outburst. In different coal seams or different levels of the same coal seam, the indexes are different. At this paper, the essential, mechanism and effect factors of prediction indexes including drilling cuttings S, the gas adsorption index K₁ and the initial velocity q of gas emission are analyzed. Through collecting and analyzing the prediction indexes of Guqiao Coal Mine, the relationship of indexes and factors including depth, preservative laws and geological structures are received. The overproof reasons of various indexes are analyzed, and outburst prediction sensitive indicators adapted to Guqiao Coal Mine are concluded. Then the reliability of prediction is enhanced and the driving speed is enhanced too.