摘要
针对小煤柱综放工作面相邻采空区存在漏风大、遗煤多,易引发采空区遗煤自燃的问题,提出由采空区自燃观测系统、小煤柱加固堵漏及向采空区灌注无机防灭火材料所组成的采空区自燃灾害综合治理技术,并在阳煤一矿81303综放工作面相邻采空区进行了工程实践。结果表明,采用以小煤柱加固堵漏与采空区注浆为主的自燃灾害综合治理技术后,原采空区的自燃高温点遗煤温度及CO体积分数明显下降,其中3^(#)观测孔温度由35.1℃降为25.2℃,CO体积分数由3.7×10^(-5)降为1.2×10^(-5),有效消除了采空区的自燃隐患,保证了81303综放工作面的生产安全。
In view of the problems of large air leakage and large residual coal in adjacent goaf in fully mechanized caving face with small coal pillars,which are easy to cause spontaneous combustion of residual coal in goaf.This paper put forward a comprehensive control technology of spontaneous combustion disaster in goaf,which was composed of spontaneous combustion observation system of goaf,reinforcement and plugging of small coal pillar and pouring in organic fire prevention and fire extinguishing materials into goaf.The engineering practice was carried out in adjacent goaf in 81303 fully mechanized caving face of No.1 Mine in Yangquan Coal Group.The results show that,after adopting the comprehensive control technology of spontaneous combustion disaster based on small coal pillar reinforcement and grouting in goaf,the temperature of residual coal and the volume fraction of CO in goaf decreases obviously,in which the temperature of the 3^(#)observation hole decreases from 35.1℃to 25.2℃,and the volume fraction of CO decreases from 3.7×10^(-5) to 1.2×10^(-5),which effectively eliminates the hidden danger of spontaneous combustion in goaf and ensures the production safety of 81303 fully mechanized caving face.
作者
郭春生
李耀谦
王姣
杨胜强
宋亚伟
GUO Chunsheng;LI Yaoqian;WANG Jiao;YANG Shengqiang;SONG Yawei(Yangquan Coal Group Co.,Ltd.,Yangquan 045000,China;No.1 Coal Mine of Yangquan Coal Group Co.,Ltd.,Yangquan 045000,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221000,China)
出处
《矿业安全与环保》
北大核心
2021年第2期117-121,共5页
Mining Safety & Environmental Protection
关键词
小煤柱
综放工作面
采空区
自燃灾害
注浆堵漏
注浆防灭火
small coal pillar
fully mechanized caving face
goaf
spontaneous combustion disaster
grouting to stop leakage
grouting for fire prevention and extinguishing
