鸡西矿务局滴道矿竖井是严重瓦斯突出矿井,以前四次过12号煤层均发生了突出。为此,在-488水平(垂深780米),从岩层穿过12号煤层,进行井下集中煤仓施工时,采用大直径,多排钻孔排放瓦斯,深孔全断面一次放炮进15米的措施,成功地揭开了瓦斯突出煤层。排放瓦斯前,测得煤层内瓦斯压力为40公斤/厘米~2。在断面9.6米~2的岩巷内,打 Ditch mine Jixi Mining Bureau shaft is a serious gas outburst mine, over the past four coal seam occurred on the 12th are prominent. To this end, at -488 level (780 meters deep), from the rock through the No.12 coal seam, the concentration of underground coal bunker construction, the use of large diameter, multi-row drainage gas drainage, deep hole full section of a blast into the 15 meters The measures successfully unveiled the gas outburst seam. Gas emissions before the measured coal seam gas pressure of 40 kg / cm ~ 2. In section 9.6 m ~ 2 rock lane, hit