Upper corner gas treatment technology research of 15211 working face in Xinglong coal mine

Based on 15211 working face in Xinglong coal mine as the object of study,according to the working face upper corner gas overrunning problem,through theoretical calculation and field measurement,this paper presents a new control of gas at upper corner angle of technical measure,the working face upper corner gas overrunning problem is effectively solved by adopting the technology and ensure the safety of production.