顶板灰岩瓦斯涌出异常分析及治理技术  

Analysis and treatment technology of gas emission anomaly from roof limestone

作　　者：李宏[1,2] 马金魁[3,4] 邓其根 LI Hong;MA Jinkui;DENG Qigen(School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;Shanxi Jincheng Anthracite Coal Mining Group,Jincheng Shanxi 048006,China;China Coal Technology&Engineering Group Shenyang Research Institute,Shenyang Liaoning 110016,China;State Key Laboratory of Coal Mine Safety Technology,Fushun Liaoning 113122,China)

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454003 [2]山西晋城无烟煤矿业集团有限责任公司,山西晋城048006 [3]煤科集团沈阳研究院有限公司,辽宁沈阳110016 [4]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《中国安全科学学报》2019年第8期81-86,共6页China Safety Science Journal

基　　金：国家自然科学基金资助(51774116,U1504403);河南理工大学博士基金资助(B2016-02)

摘　　要：为厘清吕梁矿区某低瓦斯矿井顶板灰岩瓦斯涌出异常的原因,实测开采煤层及邻近煤层瓦斯含量、顶板裂隙涌水量、岩溶水离子成分及裂隙内瓦斯浓度,结合瓦斯异常涌出地点地质构造特征,剖析顶板灰岩瓦斯富集的原因,跟踪考察工作面瓦斯治理效果。研究表明:顶板灰岩裂隙水的封堵作用及层间裂隙水对顶板灰岩溶蚀改造形成的瓦斯储集空间是顶板灰岩瓦斯涌出异常的原因;使用顶板高位钻孔抽采灰岩富集区瓦斯,可减少巷道空间的瓦斯涌出量,降低瓦斯浓度,保障工作面的安全高效生产。In order to clarify the reasons for abnormal gas emission from roof limestone of a low gas mine in Lvliang mining area,gas content in the working seam and adjacent coal seams,water inflow in the roof fissure area,the ionic component of karst water and the gas concentration in the fissure were measured.Then causes of gas enrichment in roof limestone were analyzed considering the geological structure characteristics of gas anomaly gushing locations,and various treatment measures and effects were investigated.The research indicates that the plugging effect of limestone fissure water on the roof and the gas storage space formed due to the corrosion of interlayer fissure water on limestone dissolution are the reasons for abnormal gas emission from roof limestone,and using high-level drilling to extract the gas in limestone enrichment area can effectively decrease the gas emission of roadways,reduce gas concentration to ensure safe and efficient production in working face.

关 键 词：煤层顶板 灰岩 裂隙 瓦斯富集 高位钻孔 顶板钻孔 

分 类 号：X936[环境科学与工程—安全科学]