摘要
为了解决特厚自燃煤层均压工作面采空区自燃“三带”测试的难题,以同忻矿8207工作面采空区为研究背景,采用在邻空巷道向邻近采空区施工钻孔,通过在钻孔不同深度中气体取样化验分析的方法,得出氧化带宽度在30~184 m范围内,并对比分析了均压通风(8207工作面)与负压通风(8100面)条件下采空区“三带”测试结果。研究表明:8207面均压后采空区“三带”明显“漂移”,氧化带宽度“拓宽”。对8207综放工作面采空区注氮布距进行了优化,有效治理了8207工作面回采期间采空区发火隐患。
To solve the problem of“three zones”test of spontaneous combustion in goaf of super-thick spontaneous combustion coal seam,this paper takes the goaf of 8207 working face in Tongxin Coal Mine as the research background,uses borehole construction in the roadway adjacent to the goaf,and obtains oxidation band width within the range of 30 m to 184 m by means of gas sampling analysis in different depths of borehole.The results of“three zones”test of goaf under the conditions of uniform pressure ventilation(8207 face)and negative pressure ventilation(8100 face)are compared and analyzed.The results show that“three zones”in goaf are obviously“drifting”and the width of oxidation zone is“widened”after pressure equalization on 8207 surface.The distribution distance of goaf in 8207 fully mechanized top coal caving face is optimized,and the hidden danger of goaf ignition during the stoping of 8207 face is effectively controlled.
作者
孙珍平
SUN Zhenping(China Coal Technology&Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Safety Technology,Fushun 113122,China)
出处
《煤矿安全》
CAS
北大核心
2019年第12期140-143,共4页
Safety in Coal Mines
关键词
邻空巷钻孔
特厚自燃煤层
均压工作面
采空区
自燃“三带”
煤矿火灾
boreholes in goaf roadway
extra-thick spontaneous combustion coal seam
pressure equalizing surface
goaf
spontaneous combustion“three zones”
fire in coal mine
