注氮条件对采空区自燃“三带”的影响  

Effect of Nitrogen Injection Conditions on the Spontaneous Combustion “Three Zones” in Goafs

作　　者：黄显华[1] 顾北方 靳晓华[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《科技导报》2014年第18期26-30,共5页Science & Technology Review

基　　金：国家自然科学基金重点项目(U126214)

摘　　要：研究了采空区注氮参数与"三带"分布情况的关系,并利用研发的火源定位软件分析了注氮条件对采空区自燃"三带"的影响。结果表明,合理的注氮位置基本上位于散热带和氧化带交界处,但一般情况下,建议将注氮位置设到氧化带内。当注氮达到稳定后,可以发现氧气分布出现回缩并整体前移的现象,尤其是在进风侧氧化带范围大大减少的情况下,注氮效果比较明显。This paper studies the theory concerning relationships between nitrogen injection parameters and distribution of the ＂three zones＂ in goafs, and uses fire source location software to analyze the effect of nitrogen injection on the spontaneous combustion ＂three zones＂. The results show that reasonable nitrogen injection is locatedat the border of the heat dissipation zone and oxidation zone. Under general conditions, nitrogen injection is suggested to be located in the oxidation zone. When nitrogen injection became stable, oxygen distribution showed a retraction and overall forward lead, especially when the oxidation zone was significantly reduced in the wind side, showing an apparent nitrogen injection effect.

关 键 词：注氮参数 采空区 自燃“三带” 

分 类 号：TD752.2[矿业工程—矿井通风与安全]