独头巷道火灾烟流滚退临界通风量研究
|
摘要
针对井下独头掘进巷道压入式通风模式下的巷道火灾,通过理论分析得到独头巷道发生火灾时临界风速及临界通风量计算公式。采用FDS计算流体软件,对不同火源位置、火源功率时的烟流滚退距离、逆流风速、临界通风量进行了模拟研究。结果表明:随着火源距掘进断面的距离越大,烟流滚退距离、临界通风量先增大后减小;随着火源功率的增大,烟流滚退距离、临界通风量均增大。对理论计算和模拟结果进行对比分析,验证了公式的可靠性,并通过相关系数检验,表明了二者的显著相关性。
In view of the tunnel fire of solo-ended mine lane under pressure into ventilation mode,it is obtained critical velocity and critical ventilation quantity formula through theory analysis when solo-ended mine lane is fire hazard. It is adopted FDS to simulate smoke rollback distance,contra-flow velocity and critical ventilation quantity when there are different fire source location and fire source power. The simulation results show that the smoke rollback extent and critical ventilation quantity are increased at first and then decreased when the fire work lane horizontal distance increases. Compared with the calculation and simulation results,it is verified formula reliability,and it is shown the significant correlation through the correlation coefficient test.
In view of the tunnel fire of solo-ended mine lane under pressure into ventilation mode,it is obtained critical velocity and critical ventilation quantity formula through theory analysis when solo-ended mine lane is fire hazard. It is adopted FDS to simulate smoke rollback distance,contra-flow velocity and critical ventilation quantity when there are different fire source location and fire source power. The simulation results show that the smoke rollback extent and critical ventilation quantity are increased at first and then decreased when the fire work lane horizontal distance increases. Compared with the calculation and simulation results,it is verified formula reliability,and it is shown the significant correlation through the correlation coefficient test.
引文
[1]周心权,王海燕,赵红泽.平巷烟流滚退逆行规律[J].北京科技大学学报,2004,26(2):118-121.ZHOU X Q,WANG H Y,ZHAO H Z.Rollback law of reverse smoke flow in a horizontal airway during mine fire[J].Journal of University of Science and Technology Beijing,2004,26(2):118-121.
[2]王文才,公维刚,姜宇鸿,等.水平巷道火灾时烟气逆流临界风速的研究[J].煤矿安全,2013,39(7):101-104.WANG W C,GONG W G,JIANG H Y,et al.Research on critical wind velocity to reverse the flow of smoke during a fire in a horizontal coal mine roadway[J].Coal Mine Safety,2013,39(7):101-104.
[3]李玉福.矿井火灾过程中烟流参数变化规律数值模拟研究[D].阜新:辽宁工程技术大学,2011.LI Y F.Numerical simulation study of change law of fume parameter during mine fire[D].Fuxin:Liaoning Technical University,2011.
[4]余明高,郭明,李振峰,等.走廊烟气填充的数值模拟研究[J].中国矿业大学学报,2009,38(1):20-24.YU M G,GUO M,LI Z F,et al.Numerical study of smoke development in a corridor[J].Journal of China University of Mining&Technology,2009,38(1):20-24.
[5]OKA Y,ATKINSON G T.Control of smoke flow in tunnel fires[J].Fire Safety Journal,1995,25(4):305-322.
[6]ATKINSON G T,WU Y.Smoke control in sloping tunnels[J].Fire Safety Journal,1996,27(4):335-341.
[7]WU Y,BAKAR M Z A.Control of smoke flow in tunnel fires using longitudinal ventilation systems-a study of the critical velocity[J].Fire Safety Journal,2000,35(4):363-390.
[8]王英敏.矿井通风与防尘[M].北京:冶金工业出版社,2006:64-68.WANG Y M.Mine ventilation and dust control[M].Beijing:Metallurgical Industry Press,2006:64-68.
[9]LI L M,CHENG X D,CUI Y,et al.Effect of blockage ratio on critical velocity in tunnel fires[J].Journal of Fire Science,2012,30(5):413-427.
[10]刑震.基于FDS的矿井外因火灾数值模拟研究[D].西安:西安科技大学,2013.XING Z.Numerical simulation of coal mine fire based on FDS[D].Xi'an:Xi'an University of Science and Technology,2013.
[11]李颖臻,雷波.隧道火灾模型试验中列车对烟气控制的影响[J].铁道学报,2010,32(5):136-139.LI Y Z,LEI B.Influence of Train on Control of Smoke Flow in Small-scale Tunnel Fire Experiment[J].Journal of the China Railway Society,2010,32(5):136-139.
[2]王文才,公维刚,姜宇鸿,等.水平巷道火灾时烟气逆流临界风速的研究[J].煤矿安全,2013,39(7):101-104.WANG W C,GONG W G,JIANG H Y,et al.Research on critical wind velocity to reverse the flow of smoke during a fire in a horizontal coal mine roadway[J].Coal Mine Safety,2013,39(7):101-104.
[3]李玉福.矿井火灾过程中烟流参数变化规律数值模拟研究[D].阜新:辽宁工程技术大学,2011.LI Y F.Numerical simulation study of change law of fume parameter during mine fire[D].Fuxin:Liaoning Technical University,2011.
[4]余明高,郭明,李振峰,等.走廊烟气填充的数值模拟研究[J].中国矿业大学学报,2009,38(1):20-24.YU M G,GUO M,LI Z F,et al.Numerical study of smoke development in a corridor[J].Journal of China University of Mining&Technology,2009,38(1):20-24.
[5]OKA Y,ATKINSON G T.Control of smoke flow in tunnel fires[J].Fire Safety Journal,1995,25(4):305-322.
[6]ATKINSON G T,WU Y.Smoke control in sloping tunnels[J].Fire Safety Journal,1996,27(4):335-341.
[7]WU Y,BAKAR M Z A.Control of smoke flow in tunnel fires using longitudinal ventilation systems-a study of the critical velocity[J].Fire Safety Journal,2000,35(4):363-390.
[8]王英敏.矿井通风与防尘[M].北京:冶金工业出版社,2006:64-68.WANG Y M.Mine ventilation and dust control[M].Beijing:Metallurgical Industry Press,2006:64-68.
[9]LI L M,CHENG X D,CUI Y,et al.Effect of blockage ratio on critical velocity in tunnel fires[J].Journal of Fire Science,2012,30(5):413-427.
[10]刑震.基于FDS的矿井外因火灾数值模拟研究[D].西安:西安科技大学,2013.XING Z.Numerical simulation of coal mine fire based on FDS[D].Xi'an:Xi'an University of Science and Technology,2013.
[11]李颖臻,雷波.隧道火灾模型试验中列车对烟气控制的影响[J].铁道学报,2010,32(5):136-139.LI Y Z,LEI B.Influence of Train on Control of Smoke Flow in Small-scale Tunnel Fire Experiment[J].Journal of the China Railway Society,2010,32(5):136-139.