Comprehensive Outburst Prevention Technology of Mine Roadway to Open Seam with Mine Auxiliary Roadway, Gas Drainage, Blasting and Grouting Integrated Method

According to the high danger of outburst seam with an in-situ gas pressure over 2.0 MPa, high requirements of the outburst prevention and other objectiv e conditions in mine rock roadway heading passing through outburst seam, based on the analysis on the actual engineering design condition and seam gas deposit par ameters, a mine auxiliary roadway firstly constructed was proposed and conducted and then a primary construction of gas drainage boreholes was conducted in the aux iliary roadway.Meanwhile, a standing blasting was applied to improve the seam permeability.A grouting reinforced roof was applied to improve the stability of the surrou nding rock and other technical means were applied to the mine roadway heading.Therefore, the completed outburst prevention process could not only avoid the direct C ontact the high danger outburst seam before the outburst eliminated, good effects of outburst prevention measures would favorably realized and the construction safety of the seam opening process could be ensured in the mine rock roadway heading.