综放工作面动态注氮参数研究及数值模拟  

Research and numerical simulation of dynamic Nitrogen injection parameters in fully mechanized mining face

作　　者：蔡峰[1,2] 李华琛 封居强 CAI Feng;LI Huachen;FENG Juqiang(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory of Mining Response and Disaster Prevention in Deep Coal Mines,Huainan 232001,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001

出　　处：《华北科技学院学报》2025年第1期40-47,共8页Journal of North China Institute of Science and Technology

基　　金：安徽省高校协同创新项目(GXXT-2020-057)。

摘　　要：针对目前防灭火注氮工程中存在的资源浪费、效率低等问题,本文提出了一种动态注氮的防灭火方法。围绕朱仙庄矿884工作面,开展采空区自燃“三带”测定,通过连续监测束管数据获得氧气浓度。依据氧气浓度含量,利用Fluent模拟软件构建计算模型,模拟不同注氮位置和注氮流量对自燃“三带”分布的影响,确定动态注氮工艺参数。结果表明:注氮位置在进风侧距离工作面30~60 m,注氮量为440~500 m^(3)/h时,动态注氮防灭火效果最佳,效益最好。Aiming at the problems of resource waste and low efficiency in nitrogen injection engineering,a dynamic nitrogen injection method is proposed in this paper.The measurement of“three zones”of spontaneous combustion in goaf is carried out around 884 working face of Zhuxianzhuang Mine,and oxygen concentration is obtained by continuous monitoring of beam tube data.According to the oxygen concentration content,the simulation software Fluent is used to build a calculation model to simulate the influence of different nitrogen injection positions and nitrogen injection flow rates on the“three zones”distribution of spontaneous combustion,and the nitrogen injection parameters are dynamically optimized.The results show that when the nitrogen injection position is 30~60 m away from the working face and the nitrogen injection amount is 440~500 m^(3)/h,the dynamic nitrogen injection has the best anti-fire effect and the best benefit.

关 键 词：动态注氮 采空区防灭火 综放开采 数值模拟 自燃“三带” 

分 类 号：TD752.2[矿业工程—矿井通风与安全]