淮北芦岭煤矿是高沼气矿井,年设计能力为1.5Mt,实际生产能力为1.8Mt.现开采的第一生产水平即-400m水平,吨煤瓦斯涌出量为20m~3,瓦斯压力为20.1～28.3kg/cm~2,压力梯度为8.8atm.8~#、9~#煤层均为松软煤层,有煤与瓦斯突出危险.自建矿到现在,在石门揭开煤层时,共发生12次突出(见表1),钻孔也经常发生喷出.如现开采一采区三区段和四采区四区段的8~#煤层顶分层工作面, The Luling coal mine in Huaibei is a high-methane gas mine with an annual design capacity of 1.5Mt and an actual production capacity of 1.8Mt. The first production level that is now mined is -400m, the gas emission per ton of coal is 20m 3 and the gas pressure is 20.1 ~ 28.3kg / cm ~ 2, the pressure gradient is 8.8atm ~ 8, and the 9 ~ # coal seams are all soft coal seam with coal and gas outburst danger.At present, (See Table 1), drilling is also often ejected.If mining a mining area three sections and four mining area four sections of 8 ~ # seam top stratification face,