摘要
112综采放顶煤工作面在正常回采过程中,未发生自然发火现象。但在工作面回撤时,由于回撤时间过长、收尾速度过慢,采空区出现CO浓度异常情况,局部出现高温点。通过分析CO浓度异常的原因,制定治理思路,采取加强观测、建密闭墙、灌注惰性气体等措施,顺利的实现了工作面的回撤,保证了矿井的安全生产。
During the process of recovery of 112 th fully mechanized working face,no spontaneous combustion occurred,but in the process of retreating,with the long time of retreat and the low speed of ending,the concentration of CO in mined area is abnormal,and high temperature dot occurred in partial area.By analyze the reason of abnormal concentration of CO,this thesis built treatment scheme of strengthen observation,built airtight wall,inject inert gases,realize the successfully retreat of working face and ensure the safe production of coal mine.
出处
《煤矿现代化》
2017年第5期68-70,共3页
Coal Mine Modernization
关键词
综放工作面
回撤
高温点
液态CO2
fully mechanized working face
retreat
high temperature dot
liquid carbon dioxide
