博孜墩西井工作面绝对瓦斯涌出量规律分析

针对博孜墩煤矿瓦斯赋存规律及涌出问题，通过现场调研和资料收集，对博孜墩煤矿西井的地质情况和瓦斯地质规律进行分析，并对瓦斯涌出量进行预测。结果表明:矿井中瓦斯垂直分带大部分为氮气（N₂）带，少部分为氮气—甲烷（N₂—CH₄）带；矿井在历次勘探过程中没有进行过瓦斯含量及成分的测试工作，历年瓦斯鉴定结果均为低瓦斯矿井；矿井采掘过程中，瓦斯涌出量较小，但随着开采深度和开采强度的增大，其绝对瓦斯涌出量会逐渐增大；根据建立的埋深与涌出量相关的一元线性回归方程，得出绝对瓦斯涌出量大小与煤层埋深相关性最大，相关系数R²达到0.796 4。研究结果对博孜墩煤矿存在的瓦斯问题进行了一定程度的解释，为矿井开采工作提供了基础理论支持。

Analysis of law of absolute gas emission in working face of Bozidun west shaft

According to the law of gas occurrence and flooding in Bozidun Coal Mine，the geological conditions and gas geological laws of the West Well of Bozidun Coal Mine were analyzed through on-site investigation and data collection，and the gas emission amount was predicted.The results showed that most of the vertical gas division in the middle gas is nitrogen（N₂） belt，and a small part is nitrogen-methane（N₂-CH₄） belt.No gas content and composition test has been carried out in the past exploration process of the mine，and the results of gas appraisal in the past years are all low gas mines.The amount of gas emission is small during mine mining，but as the mining depth and mining intensity increase，the absolute gas emission will gradually increase.According to the established one-dimensional linear regression equation，it is concluded that the absolute gas emission has the greatest correlation with the coal seam depth，and the correlation coefficient R² reaches 0.796 4.The research results explain the gas problem in Bozidun Coal Mine to a certain extent，and provide basic theoretical support for mine mining work.