矿井带式输送机火灾蔓延规律数值模拟研究  

Numerical Simulation of Spreading Laws of Coal Mine Belt Conveyer Fire

作　　者：王伟峰[1] 马砺[1] 王刘兵[1] 张李荣 

机构地区：[1]西安科技大学安全科学与工程学院,陕西西安710054

出　　处：《煤矿安全》2017年第4期40-43,共4页Safety in Coal Mines

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)

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。In order to grasp the laws of fire spreading and smoke flow in transportation roadway, a FDS similar model of 11 mx0.5mxO.4 m was established based on fire simulation test platfornl of 12 mx0.7 mxO.9 m. Setting fire power Q=2.51 kW, wind speedrange of 0 to 0.8 m/s, the distribution of temperature field, the smoke movement and the spread of belt conveyer fire in the road-way were simulated using FDS similarity model. The results show that longitudinal ventilation is the main factor of changing theroadway fire temperature field distribution and gas diffusion, the average rate of fire spread is proportional to the wind velocity,wind speed has a significant influence on the temperature field, smoke spread and fire spread rate of belt conveyor fire.

关 键 词：带式输送机火灾 蔓延规律 数值模拟 烟气运移 FDS相似模型 

分 类 号：TD752.2[矿业工程—矿井通风与安全]