摘要
为防止周边火区自燃产生的CO气体从上部采空区涌入工作面,通过在主井和回风井喷涂高分子发泡材料封堵了漏风通道;在火区露天开挖隔离带和在井田边界构筑隔离墙阻断了火区;在双工作面采用联合均压通风技术保证了工作面回采作业。结果表明,通过以上4种综合防灭火技术周边火区没有向板定梁塔煤矿井田蔓延,回采过程中工作面回风巷CO浓度都未超过24×10^(-6)。
In order to prevent CO gas generated from spontaneous combustion of surrounding fire areas entering into working face from the upper mined-out area, the air leakage channel is blocked through spraying polymer foam materials in main shaft and return air well. The fire zone is blocked by open-cut excavation of isolation zone and the construction of separating wall in the boundary of field. Combined air pressure ventilation technology is adopted in double working face to ensure working face recovery.The results show that the surrounding fire zone has not spread to Bandingliangta Coal Mine through above four kinds of integrated fire prevention and control technology. The concentration of CO in return airway of working face is less than 24 ×10^-6.
出处
《煤矿安全》
北大核心
2017年第7期141-144,共4页
Safety in Coal Mines
关键词
煤炭自燃
浅埋深煤矿
火区隔离
注浆
均压通风
CO浓度
coal spontaneous combustion
shallow buried coal mine
fire area isolation
grouting
pressure balancing ventilation
CO concentration
