一、序言 就全世界的煤矿来说,现在瓦斯突出成了最大的安全问题。其原因是随着开采深度的增加,煤层的瓦斯蕴藏量增加了,地压也变大了。据波兰统计,约8％的瓦斯突出(1556次中的122次)是发生在石门揭开煤层时,并且瓦斯突出的规模都很大,波兰最大的一次突出喷出了5000吨煤炭。 First, the preface To the coal mines in the world, the gas outburst now becomes the biggest security issue. The reason is that with the increase of mining depth, the gas reserves in the coal seam have increased and the ground pressure has also increased. According to Polish statistics, about 8% of the gas outburst (122 out of 1556) occurred at the time when the coal seam was opened and the scale of gas outburst was large. In Poland, the largest one had spilled 5000 tons of coal.