采矿与安全工程学报2012，Vol.29Issue(1)：131-134,4.
综放工作面“U+I”通风系统与煤自燃的关系
The Relationship Between 'U+I' Ventilation System of Fully Mechanized Top Coal Caving Face and Coal Spontaneous Combustion
摘要
Abstract
In this paper, the 'U+F ventilation system's characteristics of fully mechanized top coal caving face have been analyzed and the air distribution formula of each roadway deduced. In addition, gas drainage efficiency of the 'U+I' ventilation system was investigated when the elevated lane was both blocked and unobstructed. And more specifically, the differences of the oxygen concentration field in the goaf caused by the elevated lane's state of the 'U+F ventilation system were studied with numerical simulation method and by combining the mine fire case dated April 8, 2005 at the working face 5344 of Wulan Coal Mine, Shenhua-Ningxia Coal Industry Group. The research shows that if the elevated lane is blocked, the gas drainage efficiency would become lower and gas concentration at upper corner of working face would become higher. Besides, the oxidization and heat accumulation zone would be expected to be larger than before and nearer to the working face in the exhaust section. The results achieved may serve as a guidance to solve gas overrunning problem at work face and prevent coal spontaneous combustion in the goaf.关键词
通风方式/高位巷/自燃/数值模拟Key words
ventilation method/ elevated lane/ spontaneous combustion/ numerical simulation分类
矿业与冶金引用本文复制引用
周福宝,刘玉胜,刘应科,张占国..综放工作面“U+I”通风系统与煤自燃的关系[J].采矿与安全工程学报,2012,29(1):131-134,4.基金项目
国家自然科学基金项目(50604014) （50604014）
教育部新世纪优秀人才项目(NCET-08-0838) （NCET-08-0838）
煤炭资源与安全开采国家重点实验室开放基金项目(09KF11) （09KF11）
中国矿业大学杰出青年培养基金项目(2010JQPB03,2011JQP08) （2010JQPB03,2011JQP08）
