Abstract: Under the conditions of protection layer mining,in order to eliminate the outburst dangerous of coal pillar affected zone in protected coal seam(unprotected areas) during tunnel driving working,shorten the mining face preparation time,reduce gas outburst hidden dangers from mining face to unprotected areas,through comparison and analysis of current tunneling technologies in outburst seam,the paper puts forward a new tunneling elimination outburst technical measure which combined gas drainage by detour and advance discharging boreholes.The engineering practice in Ding_5.6-19150 machinery tunnel of Pingdingshan Tian’an coal industry group No.4 mine shows that the machinery tunnel avoids unprotected area by detour basically realizes synchronized advancement with the airway in protected area.By using machinery tunnel detour to drainage bedding gas in unprotected area,the parallel work of the tunneling and gas control is realized.At present,machinery tunnel safely throughout has been already realized,which greatly shortens 6 ~7 month for working.