矿井带式输送机火灾蔓延规律数值模拟研究

发布时间：2018-04-25 01:19

  本文选题：带式输送机火灾 + 蔓延规律　； 参考：《煤矿安全》2017年04期

【摘要】：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。
[Abstract]:In order to understand the rule of fire spread and smoke migration in transportation roadway, a similar FDS model with size of 11 m 脳 0.5 m 脳 0.4 m was established based on 12 m 脳 0.7 m 脳 0.9 m mine roadway fire simulation bench. The fire source power of 2. 51 kW and the wind speed range of 0 ~ 0 ~ 0 ~ 0 ~ 0. 8 m / s were set. The temperature field distribution, flue gas movement and fire spread of belt conveyor were simulated by using FDS similar model in the course of fire evolution. The results show that longitudinal ventilation is the main reason to change the distribution of fire temperature field and smoke diffusion in roadway, and the average fire spread rate is proportional to the wind speed, and the wind speed has a significant effect on the temperature field, smoke diffusion and fire spread rate of belt conveyer fire.
【作者单位】： 西安科技大学安全科学与工程学院;
【基金】：国家自然科学基金资助项目(51504186) 陕西省科技攻关资助项目(2016GY-191) 陕西省教育厅科研专项资助项目(14JK1477)
【分类号】：TD752
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本文编号：1799125