摘要
为研究复杂矿井火灾的烟气扩散规律和火风压影响范围,利用Ventsim进行某金矿3种不同工况(工况1、2位于斜坡道,工况3位于主进风巷道)条件下的火灾模拟,并研究火灾发生时的风压变化及烟气扩散规律。模拟结果表明:火风压影响程度随火源距离增加线性下降;根据各工况模拟的烟气扩散时间,矿井需在700s内进行反风并组织工作人员逃生;工况3火灾烟气扩散速度更快、范围更广,即主进风巷道的火灾危险性更大;斜坡道是烟气的主要扩散路径,不宜作为逃生路径,发生火灾时应组织工作人员通过回风侧进行逃生。研究结果对矿井井下火灾救援具有重要指导意义。
To study the smoke diffusion law of complex mine fire and the influence range of fire pressure,Ventsim was used to conduct fire simulation in a gold mine under three different working conditions.Fire simulation conditions 1and 2were located in the ramp,and fire simulation conditions 3was located in the main intake airway.And the change of wind pressure and smoke diffusion when the fire occurred was studied.The results show that the influence degree of fire pressure decreases linearly with the increase of fire source distance.According to the simulated smoke diffusion time of each fire simulation condition,the mine needs to reverse ventilation within 700sand organize the staff to escape.In fire simulation conditions 3,the smoke diffusion speed is faster and the range is wider,that is,the fire risk of the main intake airway is greater.The ramp is the main diffusion path of smoke and should not be used as an escape path.In case of fire,staff should be organized to escape through the return air side.The research content has an important guiding significance for the mine fire rescue.
作者
肖梦辉
于涛
常宝孟
王远
初晓峰
杜翠凤
XIAO Menghui;YU Tao;CHANG Baomeng;WANG Yuan;CHU Xiaofeng;DU Cuifeng(University of Science and Technology Beijing,Beijing 100083,China;Dayingezhuang Gold Mine,Zhaojin Mining Industry Co.,Ltd,Yantai,Shandong 265414,China;Jiaojia Gold Mine,Shandong Gold mining(Laizhou)Co.,Ltd,Yantai,Shandong 261441,China)
出处
《矿业研究与开发》
CAS
北大核心
2021年第12期129-134,共6页
Mining Research and Development
基金
“十三五”国家重点研发计划项目(2018YFC0604605)
中央高校基本科研业务费项目(FRF-TP-19-039A1).
作者简介
肖梦辉(1997—),男,河南周口人,硕士研究生,研究方向为矿井通风与火灾防治,E-mail:ustb_xmh@163.com。;通信作者:杜翠凤(1966—),女,河北唐山人,教授,博士,主要从事矿井通风与火灾防治、粉尘抑制及采矿方法研究,E-mail:1367724455@qq.com。
