上覆煤层房柱式采空区高浓度CO威胁的综合措施防治  

Using comprehensive measures to control the high concentration CO risk from upper coal seam room and pillar mining goaf

作　　者：徐俊[1,2] 李金亮[1,2] 吴康华[1,2] 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆市沙坪坝区400037 [2]中煤科工集团重庆研究院,重庆市沙坪坝区400037

出　　处：《中国煤炭》2013年第7期105-108,共4页China Coal

摘　　要：针对龙华煤矿上覆煤层房柱式采空区高浓度CO威胁,首先采用充填封堵切断CO来源,然后注氮气降低CO浓度,最后采用局部正压通风防治CO涌出。实践结果表明,通过以上综合措施将上覆煤层房柱式采空区CO浓度由0.6%降至最低0.000046%,且回采过程中本煤层工作面上隅角CO浓度未超过0.000024%。In view of the risk of high concentrations CO in upper coal seam room and pillar mining goaf in Longhua coal mine,firstly,the CO source have been cut of by using filling materials.Then the CO concentration have been reduced by nitrogen injection.At last,using partial positive pressure to control CO emission.Practical results showed that the filling materials and nitrogen injecting,by using this comprehensive measures,CO concentration in upper coal seam room and pillar mining goaf has been reduced from 0.6% to 0.000046%.The CO concentration in upper corner was under 0.000024%.

关 键 词：上覆煤层 房柱式采空区 充填封堵 注氮 局部正压通风 CO浓度 

分 类 号：TD724[矿业工程—矿井通风与安全] TD752