全矿反风风速对硐室火灾烟气影响的数值模拟  

Numerical simulation of the effect of whole mineral air-reversing speed on chamber fire smoke

作　　者：李雯静[1,2] 邱立强 任大军 LI Wenjing;QIU Liqiang;REN Dajun(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan 430081,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉430081

出　　处：《矿业安全与环保》2022年第2期57-60,65,共5页Mining Safety & Environmental Protection

基　　金：湖北省高等学校优秀中青年科技创新团队计划项目(T2020002)。

摘　　要：为探究全矿反风风速对硐室火灾烟气蔓延的影响,利用FDS火灾数值模拟软件构建矿井巷道三维模型,模拟全矿反风风速为1.0、1.5、2.0、2.5 m/s条件下的火灾场景,分析不同反风风速下硐室左右两侧烟气浓度和巷道内能见度的变化情况。研究结果表明:当全矿反风风速为1.0 m/s时,巷道进风侧风流紊乱,烟气出现明显回流现象;随着反风风速的增大,进风侧风流方向开始反转,巷道内能见度和风流反向速率不断增大;反风风速为1.5~2.0 m/s较合适,且当针对硐室火灾事故采取救灾救援措施时,反风风速需确保大于临界风速2.5 m/s。In order to explore the effect of whole mineral anti-reversing speed on the spread of chamber fire smoke,the 3D model of roadway was constructed by using FDS fire numerical simulation software,the fire scenes under four conditions were simulated,that was,when the whole mineral anti-reversing speed was 1.0 m/s,1.5 m/s,2.0 m/s and 2.5 m/s respectively.Comparing the changes of smoke concentration on both left and right side of the chamber and the visibility in the tunnel under different air-reversing speeds.The results show that when the whole mineral anti-reversing speed is 1.0 m/s,the wind flow on the inlet side of the tunnel is in disorder,and the smoke has obvious recirculation flow;with the increase of the air-reversing speed,the direction of wind flow on the inlet side begin to reverse,and the visibility in the tunnel and the air-reversing speed continue to increase;it is suitable when the air-reversing speed is 1.5 m/s to 2.0 m/s,and when taking rescue measures for the chamber fire accident,the air-reversing speed should be ensured to be greater than the critical wind speed of 2.5 m/s.

关 键 词：全矿反风 反风风速 硐室火灾 烟气浓度 能见度 数值模拟 

分 类 号：TD72[矿业工程—矿井通风与安全] TD75