新景矿15号煤层瓦斯赋存影响因素分析

Analysis of the factors influencing the gas fugacity of No.15 coal seam in Xinjing Mine

瓦斯是影响煤矿安全生产的主要因素之一,本文以新景矿15号煤层为研究对象,结合地质勘探及其生产揭露资料,从地质构造、顶底板岩性、煤层埋深、煤层厚度、岩溶陷落柱等影响15号煤层瓦斯赋存的因素入手,发现顶底板岩性及煤层埋深是关键因素。对瓦斯涌出量与煤层埋深关系进行统计分析,合理预测瓦斯涌出量,得到15号煤层瓦斯含量在8~17 m3/t,对工作面瓦斯抽放设计及其它生产工作起到指导意义。

Gas is one of the main factors affecting the safe production of coal mines,No.15 coal seam of Xinjing Mine was taken as the research object,combines geological exploration and its production exposure data,from the factors affecting the gas distribution in No.15 coal seam such as geological structure,top and bottom lithology,coal seam burial depth,coal seam thickness,Karst trapped column,etc.,and it was found that top and bottom slab lithology and coal seam burial depth were the key factors.The relationship between gas gush and coal seam burial depth was statistically analyzed,and the gas gush was reasonably predicted,and the gas content of No.15 coal seam was 8~17 m3/t,which was a guiding meaning for the design of gas extraction and other production work at the working face.