采空区两巷同注CO2防灭火效果考察分析  

Investigation and Analysis on Effect of CO2 Injection Along Both Sides of Goaf

作　　者：杜斌[1,2,3] DU Bin(China Coal Research Institute,Beijing 100013,China;China Coal Technology&Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]煤科集团沈阳研究院有限公司,辽宁抚顺113122 [3]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤矿安全》2020年第11期185-188,194,共5页Safety in Coal Mines

摘　　要：借助数值模拟手段,对采空区两巷同注CO2气体时采空区自燃"三带"分布范围进行探究,并将数值模拟结果与现场实测结果进行对比,发现采空区两巷同注CO2气体可以大幅度减小"氧化带"的范围,极大地提高了采空区惰化效果。最后,实测采空区两巷同注CO2气体时回风隅角处CO2气体的浓度,发现其与数值模拟结果相吻合,并提出优化方法和安全防范措施。With the assistance of numerical simulation software,the range of"three zones"about spontaneous combustion in the mined-out region that was injected by using CO2 along both sides was studied.By contrast of the range of"three zones"which was measured on spot without CO2 injection,it indicated that the range of oxidation zone could be decreased when the mined-out regions was injected by using CO2 along both sides of it.It reveals that the injection by using CO2 along both sides of the minedout region can improve the inert range in mined-out region greatly.Then CO2 concentration at outlet corner of working face was measured,which corresponded with the concentration of numerical simulation results.Finally,this paper highlighted optimization methods and safe precautions.

关 键 词：采空区 CO2防灭火 氧化带 数值模拟 效果考察 

分 类 号：TD752.2[矿业工程—矿井通风与安全]