封面
声明
致谢
中文摘要
英文摘要
目录
1 绪论
1.1 研究背景及意义(Research Background and Significance)
1.2 国内外研究现状(Current Research Status in Domestic and Abroad)
1.3 研究内容与研究方法(Research Contents and Methods)
2 井下注氮防灭火理论与工艺研究
2.1 低温氮气防灭火机理及特性(Mechanism and Features of Microthermal Nitrogen for Fire Prevention and Extinguishing)
2.2 液氮防灭火工艺(Fire Prevention and Extinguishing Process of Liquid Nitrogen)
2.3 不同注氮工艺存在的问题及分析(Analysis Existing Problems of Different Nitrogen Injection Technology )
2.4 井下可控温式液氮防灭火工艺(Underground Controllable Temperature Technology of Liquid Nitrogen for Fire Prevention and Extinguishing)
2.5 本章小结(Conclusion of the Chapter)
3 采场气体运移数学模型及其边界条件
3.1 采动裂隙场的多孔介质渗流特性(Infiltration Flow Characteristic in Porous Media of Mining Fissure Field)
3.2采空区渗流参数的确定(The Determination of Infiltration Flow Parameters in Gob)
3.3采空区气体流动基本方程(Fundamental Equations of Gas in Gob)
3.4 Fluent软件介绍(Introduction of Fluent)
3.5 本章小结(Conclusion of the Chapter)
4 低温氮气在采空区运移规律数值模拟
4.1工作面概况及数学模型建立(General Profile of Working Face and Mathematic Modeling)
4.2 注氮前后流场及气体浓度场的对比研究(Comparative Study on Flow Field and Gas Concentration Field before and after Nitrogen Injection in Gob)
4.3 地面钻孔注氮位置的确定(The Determination of Nitrogen Injection Location by Surface Drilling )
4.4 低温氮气在采空区内运移规律(Migration Law of Microthermal Nitrogen in Gob)
4.5 工作面氧气浓度变化(The Variation of Oxygen Concentration on Working Face)
4.6 本章小结(Conclusion of the Chapter)
5羊场湾矿注氮防灭火技术工程应用
5.1 Y120204 工作面自然发火概况(Spontaneous Combustion of Y120204 Working Face)
5.2 注氮防灭火系统及实施(Nitrogen Injection System and Implementing for Fire Prevention and Extinguishing)
5.3 监测及注氮效果评价(Monitoring and Nitrogen Injection Performance Evaluation)
5.4 本章小结(Conclusion of the Chapter)
6结论与展望
6.1 主要结论(Main Conclusions)
6.2 本文创新点(Innovative Points)
6.3 工作展望(Prospects of Future Research)
参考文献
作者简历
学位论文数据集