15309工作面采空区自燃“三带”分布规律及防灭火措施  

Distribution Law on the"Three Zones"of Spontaneous Combustion in Goaf of 15309 Working Face and Fire Prevention and Extinguishing Measures

作　　者：赵嘉宁 Zhao Jianing(Lu'an Chemical Sijiazhuang Co.,Ltd.,Jinzhong Shanxi 045300,China)

机构地区：[1]潞安化工寺家庄公司,山西晋中045300

出　　处：《山西冶金》2025年第1期202-203,共2页Shanxi Metallurgy

摘　　要：研究掌握某矿井15309工作面煤层“三带”分布规律,防止采空区内遗煤发生自燃现象,对15309工作面煤层进、回风侧O_(2)浓度分布规律进行测定,依据O_(2)浓度分布规律划定本煤层采空区自燃“三带”分布范围。通过铺设气体束管监测,对采空区的气样成分进行了实验研究,将煤层分为散热带、可能自燃带、窒息带3个阶段。同时,利用Fluent软件对现场实测数据进行处理,得到各测点O_(2)浓度的变化规律和采空区“三带”划分范围,为15309工作面安全回采提供技术支撑。Research and master the distribution law of the"three zones"of the coal seam in the 15309 working face,prevent spontaneous combustion of residual coal in the goaf,measure the distribution law of O_(2) concentration on the inlet and return sides of the coal seam in the 15309 working face,and delineate the distribution range of the"three zones"of spontaneous combustion in the goaf of this coal seam based on the distribution law of O_(2) concentration.By laying gas beam tubes for monitoring,experimental research was conducted on the composition of gas samples in goaf,and the coal seam was divided into three stages:dispersed zone,potential spontaneous combustion zone,and suffocation zone.At the same time,Fluent software was used to process the on-site measured data,obtaining the variation law of O_(2) concentration at each measuring point and the division range of the"three zones"in the goaf,providing technical support for the safe mining of the 15309 working face.

关 键 词：采空区 遗煤 自然发火 自燃“三带” 防灭火技术 

分 类 号：TD753[矿业工程—矿井通风与安全]