常村煤矿本煤层抽采钻孔瓦斯衰减规律研究

Study on attenuation law of gas in the extraction drilling of the local coal seam in Changcun Coal Mine

钻孔抽采瓦斯是治理瓦斯超限的重要手段,为更好地实现钻孔瓦斯精准抽采,通过对山西潞安环保能源开发股份有限公司常村煤矿2103工作面本煤层钻孔瓦斯抽采参数进行统计分析,研究其钻孔抽采参数的衰减规律,从而对邻近的2102工作面钻孔瓦斯抽采提供指导。并基于上述分析对2102工作面本煤层钻孔的预抽率计算,抽采钻孔经过半年、一年抽采,瓦斯预抽率分别达到31.78%、40.47%。

Drilling and gas extraction is an important means to control gas overlimit,in order to better realize accurate gas extraction from drilling,by conducting statistical analysis on the drilling and gas extraction parameters of the No.2103 working face in Changcun Coal Mine of Shanxi Lu′an Environmental Protection and Energy Development Co.,Ltd.,the attenuation law of the drilling and gas extraction parameters was studied,providing guidance for the drilling and gas extraction of the adjacent No.2102 working face.Based on the above analysis,the pre-extraction rate of the coal seam drilling in the No.2102 working face was calculated.After six months and one year of extraction,the gas pre-extraction rates of the drilling reached 31.78%and 40.47%,respectively.