红卫煤矿坦家冲矿井是一个具有严重煤与瓦斯突出的矿井。现在开采的第一水平每一个采区就有40～50个石门要揭开突出煤层(Ⅵ煤)。揭煤层任务大,突出的可能性多。1966年建井以来,千吨以上的突出就有7次,均发生在石门揭煤或煤门掘进中,严重地影响井下安全生产。坦家冲矿井,石门揭煤普遍采用排放钻孔配合震动性放炮措施。采用的钻孔直径为 Hongwei Coal Mine Tanjiachong mine is a serious coal and gas outburst mine. Now the first level of mining each mining area there are 40 to 50 Shimen to uncover the prominent coal seam (VI coal). Hidden coal seam task, highlighting the possibility of more. Since the establishment of the well in 1966, there have been seven outstanding occurrences of more than one thousand tons, all of which occurred in the uncovering of coal or coal in Shimen, which seriously affected underground safety in production. Tan house Chong mine, Shimen exposed coal commonly used emission drilling with vibration blasting measures. Drilling diameter used