韩家湾煤矿213108综采面采空区煤自然发火“三带”研究  

“Three zones”of spontaneous combustion in goaf of 213108 fully mechanized face in Hanjiawan Coal Mine

作　　者：李慧刚 王钊 宋亚 贾建 LI Huigang;WANG Zhao;SONG Ya;JIA Jian(Shaanxi Shanbei Mining Hanjiawan Coal Co.,Ltd.,Yulin 719315,China)

机构地区：[1]陕西陕北矿业韩家湾煤炭有限公司,陕西榆林719315

出　　处：《陕西煤炭》2023年第4期34-38,共5页Shaanxi Coal

摘　　要：在易自燃煤层综采工作面开采中,采空区遗煤较多且因各种原因回采不及时,经常会造成煤自燃隐患,为了防止韩家湾煤矿综采工作面采空区煤自燃火灾的发生,通过布置束管的方式进行采样分析,研究采空区内部气体的变化规律。依据工作面实际情况进行数值模拟分析,基于采空区煤炭自燃理论,划分采空区煤自燃“三带”具体范围,为确定采空区注氮灌浆位置、计算采面极限安全推进速度、合理选择采空区煤自燃的预防和治理措施提供科学依据。During the mining of fully mechanized mining face in spontaneous combustion coal seam,there are more coal remaining in goaf and the recovery can not be done in time due to various reasons,which often causes the hidden danger of coal spontaneous combustion.Based on the theory of spontaneous combustion of coal in goaf,the variation law of gas in Goaf is studied by means of sampling and analyzing with bundle pipes,and the three zones of coal spontaneous combustion in goaf divided.Our study provide a scientific basis for determining the location of nitrogen grouting in goaf,calculating the ultimate safe advancing speed of the mining face,and selecting reasonable measures for prevention and control of coal spontaneous combustion in goaf.

关 键 词：采空区 煤自燃 “三带”划分 数值模拟 

分 类 号：TD752.2[矿业工程—矿井通风与安全]