不同埋深石门揭煤工作面钻屑瓦斯解吸指标研究  

Research on gas desorption indicators of drilling cuttings in cross-cut uncovering coal faces with different burial depths

作　　者：杨秀军 Yang Xiujun(Qianjiaying Mining Branch,Kailuan(Group)Co.,Ltd.,Tangshan 063300,China)

机构地区：[1]开滦(集团)有限责任公司钱家营矿业分公司,河北唐山063300

出　　处：《能源与环保》2025年第3期17-22,共6页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家重点研发计划资助项目(2017YFC0805206)。

摘　　要：为确定煤矿井下石门揭煤工作面最可靠的预测指标,以钱家营矿不同埋深石门揭煤工作面钻屑瓦斯解吸指标为研究对象,通过理论分析、实验室研究、现场测试方法,对钻屑瓦斯解吸指标Δh_(2)、K_(1)的影响因素、稳定性、适用性进行研究。研究结果表明,埋深较大处的石门揭煤工作面煤体相比浅部煤体瓦斯解吸、吸附的平衡时间短,解吸率快;随着煤层埋深的增大,石门揭煤工作面钻屑瓦斯解吸指标Δh_(2)相比K_(1)更能够稳定反应前方煤体的危险性;钻屑瓦斯解吸指标Δh_(2)的适用性优于K_(1),使用Δh_(2)更有利于判定石门揭煤工作面煤层的突出危险性,减少石门揭煤煤与瓦斯突出事故的发生。In order to determine the most reliable prediction indicators for cross-cut uncovering coal faces of the underground coal mine,taking the gas desorption indicators of drilling cuttings in different burial depths of cross-cut uncovering coal faces in Qianjiaying Mine as the research object,through theoretical analysis,laboratory research,and on-site testing methods,the influencing factors,stability,and applicability of the gas desorption indicatorsΔh_(2)and K_(1)of drilling cuttings were studied.The research results indicate that the coal body cross-cut uncovering coal faces in the deep burial depth has a shorter equilibrium time for gas desorption and adsorption and a faster desorption rate compared to shallow coal bodies;with the increase of coal seam burial depth,the gas desorption indicatorsΔh_(2)of drilling cuttings in cross-cut uncovering coal faces can more stably reflect the danger of the coal body ahead compared to K_(1);the applicability of the drilling cuttings gas desorption indicatorsΔh_(2)is better than K_(1),and usingΔh_(2)is more conducive to determine the risk of coal seam outburst in the cross-cut uncovering coal faces,reducing the occurrence of coal and gas outburst accidents in cross-cut uncovering coal.

关 键 词：石门揭煤 煤与瓦斯突出 敏感性 钻屑瓦斯解吸指标 

分 类 号：TD712[矿业工程—矿井通风与安全]