黄陵二号煤矿底板油型气释放规律及影响因素

Oil-type gas releasing regularity and influential factors of Huangling No.2 Coal Mine floor

瓦斯防治是煤炭资源安全开采的首要任务,而瓦斯防治的关键是根据矿井瓦斯自然释放规律及其影响因素进行精准治理。以黄陵二号煤矿为研究对象,对矿井采掘活动中最常出现的底板油型气自然释放规律及其影响因素展开分析。得出掘进工作面主要油气自然释放位置在巷道中部底鼓裂隙且衰减规律符合幂函数关系,工作面回采过程中油型气钻孔抽采效果与其终孔位置密切相关,并确定了油型气钻孔抽采最佳层位;同时地质构造对油型气自然释放具有重要影响,其中背斜影响最为显著。研究成果为二号煤矿油型气防治提供了一定的理论依据。

Gas prevention and control is the primary task of coal resource safe mining,and the key of gas prevention and control is to carry out precise control based on the natural gas release law and its influential factors.Taking Huangling No.2 Coal Mine as a research object,the natural release law of floor oil-type gas and its influential factors are analyzed.The results show that the main location of natural release of oil and gas in the driving face is in the middle of the roadway floor heave crack and the attenuation law conforms to the power function.The oil-type gas borehole extraction effect has a close relation with its last borehole location,and the optimal extraction layer level is determined.At the same time,the geological structure has an important influence on the natural release of oil-type gas,with the anticline having the most obvious influence.Our study provides a certain theoretical basis for the prevention and control of oil-type gas in No.2 Coal Mine.