胶带输送机火灾CO气体扩散规律的通风仿真模拟研究  

Ventilation Simulation of CO Gas Diffusion Law in Belt Conveyor Fire

作　　者：闫宏宇 刘浩文 YAN Hongyu;LIU Haowen(North China Institute of Science and Technology,Langfang 065201,Hebei,China)

机构地区：[1]华北科技学院,河北廊坊065201

出　　处：《能源与节能》2023年第4期25-29,共5页Energy and Energy Conservation

摘　　要：针对胶带输送机发生火灾后CO在矿井系统中的扩散过程,分析了其发生机理,以棋盘井煤矿东翼实际巷道系统为背景,运用通风仿真软件,根据试验参数设置了非线性CO释放源,模拟了不同地点胶带输送机发生火灾时矿井系统各巷道CO体积分数、CO扩散速率和CO扩散动态发展过程。结果表明:胶带输送机火灾的发展过程中产生的CO从缓慢增长发展到激烈增长;CO的扩散速率与CO释放速率(即火势强度)呈正相关;CO最先扩散至邻近的巷道中,并会在回风大巷中被稀释;巷道风量对CO的体积分数和扩散方向起决定性作用。模拟结果在一定程度上揭示了火灾烟气在矿井通风系统中的扩散规律,对灾变通风和应急逃生方案制定等具有一定的指导意义。Aiming at the CO diffusion process in the mine system after the fire of belt conveyor,this paper analyzed the mechanism of its occurrence.Taking the actual roadway system of the east wing of Qipanjing Coal Mine as the background,the nonlinear CO release source was set according to the test parameters by using ventilation simulation software,to simulate the dynamic development process of CO volume fraction,CO diffusion rate and CO diffusion in each roadway of the mine system when fire occurred in belt conveyer at different locations.The results showed that the CO produced in belt conveyor fire developed from slow growth to intense growth;the diffusion rate of CO was positively correlated with the release rate of CO(i.e.fire intensity);CO first diffused into the roadway adjacent to it,and was to be diluted in the air-return roadway;roadway air volume played a decisive role in the volume fraction and diffusion direction of CO.The simulation results reveal the diffusion law of fire smoke in mine ventilation system to a certain extent,and have certain guiding significance for disaster ventilation and emergency escape plan formulation.

关 键 词：矿井系统 胶带输送机 通风仿真 CO 

分 类 号：TD75[矿业工程—矿井通风与安全]