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为了掌握运输巷火灾蔓延及烟气运移的规律,基于12 m×0.7 m×0.9 m的矿井巷道火灾模拟实验台,建立了尺寸为11 m×0.5 m×0.4 m的FDS相似模型;设定火源功率:Q=2.51 kW,风速范围:0~0.8 m/s,利用FDS相似模型分别模拟火灾演变过程巷道内的温度场分布情况、烟气运移情况及带式输送机火灾蔓延情况。结果表明:纵向通风是改变巷道火灾温度场分布与烟气扩散的主因,火灾平均蔓延速率与风速成正比,风速对带式输送机火灾的温度场、烟气扩散及火灾蔓延速率影响显著。
In order to grasp the law of fire spread and smoke migration in transportation lane, a similar model of FDS with a size of 11 m × 0.5 m × 0.4 m was established based on 12 m × 0.7 m × 0.9 m mine tunnel fire simulation bench. Fire source power: Q = 2.51 kW, wind speed range: 0 ~ 0.8 m / s, FDS similar model was used to simulate the distribution of temperature field, flue gas migration and belt conveyor fire spread in the process of fire evolution respectively. The results show that the longitudinal ventilation is the main reason to change the distribution of the temperature field and the flue gas diffusion. The average fire spread rate is proportional to the wind speed. The wind speed has a significant influence on the temperature field, smoke diffusion and fire spread rate of the belt conveyor.