红庙矿综放面防灭火合理注氮参数  

Rational parameters of nitrogen injection for fire prevention and extinguishment in goaf area of a fully mechanized caving face

作　　者：洪林[1,2] 冯寸寸[1,2] 周西华[1,2] 徐显伟 

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室,辽宁阜新123000 [3]蒙东能源控股有限责任公司,内蒙古锡林浩特026000

出　　处：《辽宁工程技术大学学报（自然科学版）》2012年第5期729-732,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然基金重点资助项目(50834002);国家自然基金面上资助项目(51074086);国家自然基金青年基金资助项目(51004062);辽宁省自然科学基金资助项目(20092199)

摘　　要：针对红庙矿五区5-2S综放工作面采空区防灭火合理注氮参数确定的问题,采用现场实测、实验室实验以及计算机模拟相结合的方法,数值模拟研究了不同注氮量、不同注氮位置、不同注氮时间对综放面采空区自燃"三带"分布的影响规律.结果表明:随注氮量的增加,采空区自燃氧化带的最大宽度逐渐减小,红庙矿五区5-2S综放工作面合理的注氮量应该为660～800 m3/h;合理的注氮位置为距工作面运顺侧采空区后方10～30 m;每天的累计注氮时间不超过15 h.红庙矿五区5-2S综放工作面在实际生产过程中采用了上述注氮参数,取得了很好的防灭火效果,有效地预防了采空区自燃的发生,保障了工作面的安全生产.本研究对煤矿防灭火具有一定的指导意义.In order to determine the rational parameters of nitrogen injection for fire prevention at 5-2S fully mechanized caving face in Area 5 of Hongmiao mine,this study investigates the influence on the 'Three Zones' distribution of spontaneous combustion in its goaf area at its fully mechanized coal caving face caused by different nitrogen injection volume,different injection positions and different injection times using the combination of field measurement,experimental study and computer simulation methods.The study results show that the maximum width of spontaneous combustion zone in goaf decreases gradually with the increase of nitrogen injection volume,the rational nitrogen injection volume should be 660～800m3/h;and the rational nitrogen injection position is 10～30m at the back of the goaf along headgate;the accumulative daily nitrogen injection time is not more than 15 hours.By using these parameters in the actual production operation at the 5-2S fully mechanized caving face in Area 5 of Hongmiao mine,a satisfactory result is achieved in fire prevention and extinguishment,and the nitrogen injection operation prevents the occurrence of spontaneous combustion in goaf and ensures the mine safe production.The study results have a certain guidance value for fire prevention and extinguishment in coal mine.

关 键 词：综放工作面 防灭火 数值模拟 注氮 自然发火 自燃带 放顶煤采煤 采空区 

分 类 号：TD752[矿业工程—矿井通风与安全]