刘剑;王银辉;李静;李宗翔;

• 1:辽宁工程技术大学安全科学与工程学院

摘要(Abstract)：

为确定矿井火灾时期逆流层长度变化规律,给逃生与救护工作提供参考,以下行通风倾斜巷道为研究对象,建立长80 m、宽4 m、高3.5 m拱形巷道模型,通过数值模拟的方法,确定多组火灾工况下烟气逆流层的变化规律。结果表明:巷道入口端风速在0.5³ m/s增大,烟流逆流层长度随之减小,减小幅度逐渐变缓;火源烟流放散速度在53 m/s增大,烟流逆流层长度随之减小,减小幅度逐渐变缓;火源烟流放散速度在5²5 m/s增大,逆流层长度随之增大,且增加幅度逐渐变缓;入口端风速条件固定为1 m/s,巷道倾角在0°25 m/s增大,逆流层长度随之增大,且增加幅度逐渐变缓;入口端风速条件固定为1 m/s,巷道倾角在0°⁴5°增加,火源烟气放散速度小于18 m/s时,逆流层长度随巷道倾角增加而减小,火源烟气放散速度大于18 m/s时,逆流层长度随巷道倾角增加而增加。

关键词(KeyWords)： 安全工程;矿井火灾;下行通风;烟流滚退;逆流层

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51074086,51174109)

作者(Authors): 刘剑;王银辉;李静;李宗翔;

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