Research and application of comprehensive outburst prevention technology in coal roadway driving under complex geological conditions

Pingmei No.9 coal mine belongs to coal and gas outburst mine, and mine geological conditions are extremely complex, which seriously affected the mine safety production and roadway drivage safely and quickly.The Ji_16-17-22050 machine lane tunneling faces of the mine has high gas pressure and gas content, which belongs to the dangerous area of outburst.In order to effectively eliminate the danger of regional outburst, a series of comprehensive outburst prevention measures have been adopted in this roadway, such as low-drainage roadway through-layer borehole pre-drainage technology, deep-hole pressure relief and gas release technology, coal seam water injection and so on.Through the four-in-one comprehensive outburst prevention technology, such as regional outburst risk prediction, regional outburst prevention measures, regional outburst prevention measures effect test and regional verification, especially the application of multi-means comprehensive outburst prevention measures, the outburst danger has been successfully eliminated.And combined with effective safety protection measures, it provides technical support for safe driving of roadways.