论文部分内容阅读
平顶山煤业集团十矿为煤与瓦斯突出矿井主采丁组戊组己组,、、三组煤。19882000年,戊煤层共～9_10发生煤与瓦斯突出10次,且均发生在掘进工作面,严重影响巷道安全高效推进,对矿井安全生产和高产高效构成了一定威胁。为了防治煤与瓦斯突出,多年来十矿主要采用钻孔瓦斯涌出初速度q
Pingdingshan Coal Mining Group for the ten coal mines and gas out of the main group Dingding Ding Group has five groups have been group ,,, three groups of coal. 19882000, a total of 9_10 coal and gas outburst occurred in the coal seam of Pei Seam 10 times, and all occurred in the heading face, seriously affecting the safe and efficient roadway propulsion, which posed a certain threat to mine safety and high productivity and high efficiency. In order to prevent coal and gas outbursts, over the years ten main use of drilling gas emission initial velocity q