综放工作面采空区氮气防火合理工艺参数的选择

根据国内外综放工作面采空区氮气防火技术的应用实践．确定了综放工作面采空区氮气防火合理工艺参数，对提高综放工作面采空区氮气防火效果和推进放顶煤综采在我国煤矿中的发展具有重要意义．

浅谈厚煤层开采氮气防火的注氮方式及其效果

文章论述了厚煤层开采应用氯气防火的3种注氮方式──埋管式注氮、旁路式注氮和分层隔离式注氮方法的适应条件及其效果。

氮气防火技术在铁煤集团的应用

介绍了利用氮气的性质进行氮气防火的基本原理,概述了铁煤集团在氮气防火方面采取开式、闭式及目标注氮的几种注氮方式以及所取得的成效,在煤矿防灭火方面具有较好的借鉴作用。

下分层放顶煤工作面防火技术

介绍了孙家湾煤矿在回采下分层放顶煤工作面时,采用正压通风和注氮气为主的综合防火方法,以及辅助防灭火技术,有效防止了工作面自然发火和瓦斯超限。

工作面防火合理注氮时机的探讨

文章通过现场考察和理论分析，提出了防火有效，经济合理的注氮时机。

煤矿井下移动式新型碳分子筛制氮机组的设计

本文在评价目前我国煤矿采用的氮气防灭火技术的基础上，提出了利用目前国外碳分子筛制氮先进技术，研制适于煤矿井下使用的移动式制氮机组，并着重讨论了设计中的技术关键。

Numerical simulation of nitrogen injection of goaf in fire prevention based on Finite Volume Method

The numerical simulation is used to research the influence of nitrogen injection on spontaneous combustion in goaf. The spontaneous combustion mathematical model on the coupling of air flow field, oxygen concentration field, and residual coal temperature field was established with nitrogen injection in goat＇. Then the software of numerical computation was pro- grammed by Finite Volume Method. Combined with the example, the distributions of air flow field, oxygen concentration field and residual coal temperature field at different nitrogen injection volume were obtained by the software. The results show that the nitrogen injection could effectively prevent the spontaneous combustion fire in goaf and the highest temperature in goaf decreased with the nitrogen injection volume increasing. Finally, the accuracy of the numerical simulation was verified by the temperature observation in field. The achievement of this research is of theoretical and practical significance for the prevention of coal spontaneous combustion in goaf.