易自燃煤层采空区瓦斯与氧气耦合致灾效应分析  

Analysis on Disaster Effect of Gas and Oxygen Coupling in the Goaf of Spontaneous Combustion Coal Seam

作　　者：马金魁 苏学友 赵亮宏 MA Jinkui;SU Xueyou;ZHAO Lianghong(China Coal Technology and Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,Ckina;Dashuitou Coal Mine,Gansu Jingyuan Coal Industry and Electricity Power Co.,Ltd.,Baiyin 730913,China)

机构地区：[1]煤科集团沈阳研究院有限公司,辽宁抚顺113122 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122 [3]甘肃靖远煤电股份有限公司大水头煤矿,甘肃白银730913

出　　处：《煤矿安全》2020年第8期216-219,共4页Safety in Coal Mines

摘　　要：针对"U"型通风易自然煤层开采条件下,采空区漏风使氧气与瓦斯混合具有爆炸危险性的问题,通过在采空区埋入甲烷及温度传感器进行观测,利用Fluent方法对采空区瓦斯分布规律进行模拟计算,分析瓦斯在自然发火危险区域中燃烧的可能性,对采空区内瓦斯与氧气相互达到爆炸危险的耦合区域进行危险判定分析,为现场瓦斯治理提供依据。Under the mining condition of U-type ventilation and spontaneous combustion coal seam, the air leakage in goaf may create an environment with explosion hazard due to the mixing of oxygen and gas. Through the observation by embedding methane and temperature sensor in the goaf, the Fluent method is used to perform analog computation on gas distribution regularities of goaf, and the possibility of gas combustion in the dangerous area of spontaneous ignition is analyzed. Meanwhile, the hazard judgment and analysis is conducted on the explosion coupling area resulting from the interaction of gas and oxygen in the goaf,which provides the basis for field gas control.

关 键 词：易燃煤层 采空区 瓦斯耦合 爆炸危险 自然发火区 

分 类 号：TD752.2[矿业工程—矿井通风与安全]