鹿台山煤矿2号煤层瓦斯地质区划

煤层瓦斯不均衡赋存是制约煤矿瓦斯安全管理的主控因素,准确合理的瓦斯地质区划是有效进行瓦斯防治的基础和保障。基于瓦斯地质区划理论方法,综合分析影响鹿台山煤矿3号煤层瓦斯赋存的主要地质因素,采用多元线性回归、数量化理论I、构造关联度分区等方法,筛选出影响2号煤层瓦斯含量的地质变量包括煤层埋深、围岩透气性和褶皱平面变形系数3个主要地质指标,建立了瓦斯含量预测的数学模型并对预测模型进行了理论和实践验证,模型精度较高。在此基础上利用瓦斯含量预测模型对2号煤层瓦斯含量进行预测和瓦斯地质区划。经实践验证,瓦斯地质区划结果符合实际地质情况。

Gas Geological Division of No.2 Coal Seam in Lutaishan Coal Mine

The unbalanced deposit of coal seam gas is the main control factor that restricting coal mine gas safety management.Accurate and reasonable gas geological division is the basis and guarantee for effective gas prevention and control.Based on the theoretical method of gas geological zoning,comprehensive analysis of the main geological factors affecting the occurrence of gas in No.3 coal seam of Lutaishan Coal Mine,using multiple linear regression,quantitative theory I,structural correlation zoning and other methods,three major geological indicators affecting content in No.2 coal seam were selected,namely:coal seam burial depth,surrounding rock permeability,and deformation coefficient of fold plane.A mathematical model for predicting gas content has been established and verified theoretically and practically with higher accuracy.On this basis,the gas content prediction model is used to predict the gas content of No.2 coal seam and the gas geological zoning.It has been verified by practice that the gas geological zoning results are in line with the actual geological conditions.