Based on the analysis of relation between the factors affecting coal and gas outburst,with the region geology model confirmed by Geo-dynamic division method and combined with rock stress measurement,and VB,VC,the pattern recognition model were established.The pattern recognition method was applied to predict coal and gas outburst regional hazard,with which the Xieyi mining area was then divided into dangerous outburst area,minatory outburst area and safe area.That's to assess and predict the danger of coal ...