煤矿安全2017，Vol.48Issue(9)：153-156,4.DOI:10.13347/j.cnki.mkaq.2017.09.042
煤层空巷内氮气驱替瓦斯过程数值模拟
Numerical Simulation of Nitrogen Displacing Gas Process in Abandoned Roadway of Coal Seam
年军1
作者信息
- 1. 辽宁工程技术大学,辽宁阜新123000;煤科集团沈阳研究院有限公司,辽宁抚顺113122
- 折叠
摘要
Abstract
In order to explore the process of nitrogen displacing gas in abandoned roadway of coal seam,and understand the state of diffusion motion of nitrogen in the process of displacing gas in the abandoned roadway.The roadway numerical model was established,the software of Fluent was used to simulate and analyze the state of nitrogen during the displacement process.The analysis results show that the displacemnt process of nitrogen is linear and slow diffusion in the initial phase of nitrogen injection.But,with time going by and the increasing of the amount of nitrogen injection,the injected nitrogen and the gas in the original abandoned roadway present convection and diffusion state;it forms the complete displacenent of nitrogen and the mixed displacement segment,and is gradually moving forward.Combining with Engineering case of continuous injection of nitrogen to displace gas in abandoned roadway of Detong Coal Mine,the effectiveness and stability of nitrogen displacing gas were investigated.关键词
煤层空巷/数值模拟/氮气驱替瓦斯/瓦斯积聚/瓦斯抽排Key words
abandoned roadway of coal seam/numerical simulation/nitrogen displacing gas/gas accumulation/gas drainage分类
矿业与冶金引用本文复制引用
年军..煤层空巷内氮气驱替瓦斯过程数值模拟[J].煤矿安全,2017,48(9):153-156,4.
