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
蔡峰 1李华琛 2封居强2
作者信息
- 1. 安徽理工大学 安全科学与工程学院,安徽 淮南 232001;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
- 2. 安徽理工大学 安全科学与工程学院,安徽 淮南 232001
- 折叠
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 m3/h时,动态注氮防灭火效果最佳,效益最好.
Abstract
Aiming at the problems of resource waste and low efficiency in nitrogen injection engineering,a dy-namic 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 simu-lation software Fluent is used to build a calculation model to simulate the influence of different nitrogen injec-tion 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 injec-tion position is 30～60 m away from the working face and the nitrogen injection amount is 440～500 m3/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"Key words
dynamic nitrogen injection/gob fire prevention/fully mechanized caving mining/numerical simula-tion/spontaneous combustion"three zones"引用本文复制引用
出版年
2025
NETL
NSTL
万方数据