High-temperature poisonous smoke produced by coal mine roadway fire seriously affects miners' lives and safety. Studying the development law of high-temperature smoke in the process of mine roadway fire and then exploring the danger of roadway are of great significance to personnel safety and post-disaster rescue. In order to study this problem, the CFD numerical simulation method is used to establish a fire calculation model based on ANSYS Fluent software in the development stage of mine fire. The high-temperature flue gas flow in the roadway during the development stage of mine fire is simulated, and the variation law of temperature field and gas concentration field with time and space position under different levels of roadway in the development stage of fire is revealed. The variation rules of environmental parameters, such as temperature, CO, and CO₂, are obtained by numerical calculation. Based on these, the danger zones of smoke spread in fire development stage are divided by the critical values of high-temperature smoke and toxicity evaluation index, and the mathematical fitting analysis of the evolution of the dangerous area with time is carried out. The research results have certain theoretical guiding significance for reducing underground environmental pollution and ensuring the personal safety of workers and rescuers.

中文翻译：

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矿井巷道火灾危险区划分数值模拟研究

煤矿巷道火灾产生的高温毒烟严重影响矿工的生命安全。研究矿井巷道火灾过程中高温烟气的发展规律，进而探索巷道危险性，对人员安全和灾后救援具有重要意义。为研究这一问题，在矿井火灾开发阶段，采用CFD数值模拟方法，基于ANSYS Fluent软件建立火灾计算模型。模拟了矿井火灾发展阶段巷道高温烟气流动，揭示了火灾发展阶段巷道不同高度下温度场和瓦斯浓度场随时间、空间位置的变化规律。温度等环境参数的变化规律，₂，是通过数值计算得到的。在此基础上，通过高温烟气临界值和毒性评价指标划分火灾发展阶段烟气蔓延的危险区，并对危险区随时间的演变进行数学拟合分析。研究成果对减少井下环境污染、保障工作人员和救援人员的人身安全具有一定的理论指导意义。