色连煤矿采空区自燃“三带”划分与火灾防治

"Three zones" Classification of Spontaneous Combustion and Fire Prevention in Goaf of Selian Coal Mine

根据色连一矿冲沟发育地貌8101大采高工作面的实际情况,沿采空区倾向布置了束管监测系统。通过对采空区O_2浓度及CO体积分数的分析和数值拟合,绘制出了氧浓度分别为18%、15%、11%和7%的等值线图,并且与实际情况相符,进而确定出8101工作面采空区自燃"三带"的范围。最后,根据划分的"三带"范围,确定了埋管注氮的现场防灭火方案,有效地防止了采空区遗煤自燃,保证了工作面的安全回采。

According to the actual situation of the 8101 working face with the large mining height in the gully of the No. 1 Mine of the Selian Mine, the tube monitoring system is arranged along the goal By analyzing and numerically fitting the 02 concentration and CO volume fraction in the goaf, the contour maps with oxygen concentrations of 18%, 15%, 11% and 7% are drawn and are consistent with the actual situation. The range of spontaneous combustion ＂three zones＂ in the goaf of the 8101 working face. Finally, according to the division of the ＂three zones＂, the on-site fire prevention and fire prevention scheme of the buried pipe nitrogen injection is determined, which effectively prevents the spontaneous combustion of the residual coal in the goaf and ensures the safe recovery of the working face.