Research on Technology of Multi Crosscuts United Coal Uncovering for Highly Outburst Seam of Deep

Abstract

Abstract. Analyzing the main factors effecting prevention of coal and gas outburst of multi crosscuts united coal uncovering for highly outburst seam of deep, the thesis proposes comprehensive outburst prevention measures based on regional governance measures and supplemented by local governance measures to realize seam outburst elimination in essence. According to the site engineering geological characteristics, closed loop floor roadways were formed and regional measures using widely layer-through boreholes for gas extraction were successfully implemented, this technology becomes success model for rock cross-cut coal uncovering on similar conditions and provides an effective method for realization of regional predrainage outburst measure for rock cross-cut coal uncovering.