CAJ | 학술논문

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。
위연구다삼수영향조건하광정화재적발전규률,채용화재모의연건FDS고찰료항도발생화재시,각삼수변화대기통풍적영향。결과표명：재화원공솔유180 kW증대지1 800 kW시,항도정부온도치유45℃상승지200℃;재불동항도경각하적항도정부온도평균재75-80℃,설명항도경각대항도정부온도영향흔소。수착항도통풍속도유0.5 m/s증대지3 m/s,항도최대기류속도유4.60 m/s증대지5.15 m/s,상풍향항도속도분포균균,불역산생회류,하풍향항도속도분포교잡란,연기분층피파배。해연구성과대광산방화유중요적실제의의。
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.