掘进中遇火成岩侵入瓦斯富集区的瓦斯治理  

Gas Control in Gas Enrichment Area with Igneous Rock Intrusion during Drivage

作　　者：李勇[1] 严海军[2] 李洪震[2] 刘德银[2] 田海涛[2] 

机构地区：[1]中国矿业大学资源与安全工程学院,北京100083 [2]山东省七五生建煤矿,山东微山277606

出　　处：《矿业安全与环保》2014年第5期72-75,共4页Mining Safety & Environmental Protection

摘　　要：根据矿井地质条件,确定了七五生建煤矿北七采区701工作面的火成岩侵入范围。通过实验室测定,分析了火成岩侵入对煤层瓦斯赋存的影响,结果表明:火成岩侵入区煤体吸附瓦斯的能力相对于未侵入区更强;通过现场实际测定,得到火成岩侵入对矿井瓦斯涌出的影响规律。掘进巷道施工时,在掘进至火成岩侵入区域前,瓦斯浓度上升趋势不明显;火成岩侵入后,瓦斯涌出呈剧增趋势;在经过火成岩侵入区域后,瓦斯浓度呈缓慢下降趋势。根据对瓦斯数据的统计、分析,通过改变通风条件、调控瓦斯涌出量,加强监测监控等措施,较好地解决了矿井瓦斯治理问题。The igneous rock intrusion range in 701 working face in north No. 7 mining district of 75 Shengjian Coal Mine was identified according to the mine geological conditions. Analysis was made on the impact of the igneous rock intrusion upon the gas occurrence in coal seam through laboratory tests. The results showed that the gas adsorption ability in the igneous rock intrusion area was stronger than that in the non-invaded area. The impact law of igneous rock intrusion on the mine gas emission was obtained through field measurement. During roadway driving, the gas concentration rising trend was not obvious before driving into the igneous rock intrusion area, while driving into the igneous rock intrusion area, the gas concentration showed a trend of rapid increase, and after driving though the igneous rock intrusion area, the gas concentration decreased slowly. Finally, the mine gas control problem can be better solved by analyzing the gas data, changing the ventilation conditions, controlling the gas emission volume and strengthening the gas monitoring.

关 键 词：掘进工作面 瓦斯富集区 火成岩 瓦斯治理技术 

分 类 号：TD712[矿业工程—矿井通风与安全]