Gas and Fire Prevention Research and Application of Rujigou Coal Mine 32213_(1) Full-mechanized Mining Face

By analyzing the current status of mechanized mining face of Rujigou Mine 32213(1),the paper explains the basic methods of gas-fire prevention on the mining face and discusses the rational allocation of air flow,inerting nitrogen injection in mined-out area,upper and lower corner leakage plugging,rational arrangement of effective gas drainage by floor drilling and roadway drilling,as well as the use situation and effect of these techniques on the site.It attempts to proved new ways of gas and fire prevention on full-mechanized mining face.