Abstract
In order to comprehensively control south second underground mine of Liziya and accident-prone gas outburst, low coal seam permeability coefficient, disaster caused by outburst and following prevention with and high cost and so on, the targeted outburst prevention optimization measures in coal roadway excavation area is puts forward, by applying independently developed " drilling and slotting integration " hydraulic slotting equipment in the process of drilling construction, making coal seam of pre-drainage area carry on antireflection, exposure area of drilling in coal is increased, achieve the purpose of increasing coal seam permeability and drilling extraction radius, improve extraction effect and shorten reaching standard time of gas extraction, provide a more complete solution for outburst prevention measures of underground area in mine.
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