There are two coal and gas outburst occurred in the heading face of Yi’an B1 coal seam ,and it brings a serious problem to mine’s safety in production.With the main line of coal and gas outburst prediction in the heading face, this article makes an in-depth research to determine the outburst prediction sensitive index and its critical value in the heading face of Yi’an mine.
This article get the dominant factor of outburst is gas based on the studying of coal and gas outburst features of Xin’an coal fi...