摘要
为研究多参数影响条件下矿井火灾的发展规律,采用火灾模拟软件FDS考察了巷道发生火灾时,各参数变化对其通风的影响。结果表明：在火源功率由180 kW增大至1 800 kW时,巷道顶部温度值由45℃上升至200℃;在不同巷道倾角下的巷道顶部温度平均在75-80℃,说明巷道倾角对巷道顶部温度影响很小。随着巷道通风速度由0.5 m/s增大至3 m/s,巷道最大气流速度由4.60 m/s增大至5.15 m/s,上风向巷道速度分布均匀,不易产生回流,下风向巷道速度分布较杂乱,烟气分层被破坏。该研究成果对矿山防火有重要的实际意义。
In order to study the mine fire＇s development law under the impact of multi-parameter,fire dynamics simulator software（FDS） was adopt to inspect the influence from each parameters changing to the ventilation of laneway when fire happened.The result showed the laneway crown temperature rose from 45 ℃ to 200 ℃ when the fire power increased from 180kW to 1800kW;the laneway crown temperature was from about 75~80 ℃ on average under different dip angles of laneway,which indicated that the impact of the dip angles upon the crown temperature was small.As the laneway ventilation speed increased from 0.5m/s to 3m/s,the laneway maximum air stream velocity increased from 4.60m/s to 5.15m/s,the distribution of upwind laneway velocity was enven and was difficult to produce circumfluence,however that of the downwind laneway velocity was disorderly and the fume layer was destroyed.This study achievement has the important and practice significance for mine fire prevention.
出处
《现代矿业》
CAS
2011年第8期35-37,43,共4页
Modern Mining
关键词
矿井火灾
数值模拟
FDS
多参数耦合
Mine fire
Numerical simulation
FDS
Multi-parameter coupling
