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纵向风条件下竖井横截面积对排烟效果的影响 被引量:1

The Influence of Cross-sectional Area of Vertical Shaft on Smoke Emission under Longitudinal Wind Condition
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摘要 用火灾模拟软件FDS考察了纵向风条件下竖井横截面积对排烟效果的影响。结果表明:烟气层吸穿和烟气边界层分离都影响竖井内烟气的运动,从而影响排烟效果。从分析结果看,随着纵向风速的增大,烟气层发生吸穿时的竖井尺寸增大。纵向风速较大(v≥1. 5 m/s),竖井尺寸较小(1 m×1 m),烟气边界层分离不突出;纵向风速小(v≤0. 5 m/s),竖井尺寸大(2. 5 m×2. 5 m,3 m×3 m),烟气边界层分离也不突出。 The software of fire dynamics simulator(FDS) is applied to examine the influence of cross-sectional area of vertical shaft on smoke emission under longitudinal wind condition.The results show that both smoke layering plugholing and smoke boundary layer separation affect the movement of smoke in the shaft,thus affecting the smoke extraction.According to the analysis results,with the increase of longitudinal wind speed,the size of the shaft increases when the smoke layering plugholing occurs.When the longitudinal wind speed is large ( v ≥1.5 m/s)and the vertical shaft size is small (1 m×1 m),the smoke boundary layer separation is not obvious.When the longitudinal wind speed is small ( v ≤0.5 m/s) and the vertical shaft size is large (2.5 m×2.5 m,3 m×3 m),the smoke boundary layer separation is not obvious either.
作者 陈健 许秦坤 董智玮 肖静 CHEN Jian;XU Qinkun;DONG Ziwei;XIAO Jing(School of Environment and Resources,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)
出处 《西南科技大学学报》 CAS 2019年第1期34-38,56,共6页 Journal of Southwest University of Science and Technology
关键词 隧道火灾 纵向风 竖井尺寸 排烟效果 Tunnel fire Longitudinal wind Shaft size Smoke extraction efficiency
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  • 1刘柏林,程久胜.夹活岩特长公路隧道通风方案研究[J].现代隧道技术,2005,42(1):41-47. 被引量:8
  • 2Woodburn P J. Computational Fluid Dynamics Simulations of Fire Generated Flows in Tunnels and Corridors. London: Cambridge University, 1995.
  • 3WANG Yan-Fu, JIANG Jun-Cheng, ZHU De-Zhi. Diesel Oil Pool Fire Characteristic under Natural Ventilation Conditions in the Tunnel with Roof Openings. DOI:10.1016/j. jhazmat.2008.11.056.
  • 4雷波,毕海权.城东干道隧道通风火灾安全分析报告[R].成都:西南交通大学,2006.
  • 5中华人民共和国交通部.公路隧道通风照明设计规范(JTJ026.1-1999)[S].北京:人民交通出版社,1999
  • 6茅靳丰,朱培根.城市隧道自然通风与防排烟模型试验研究火灾工况模型试验研究报告[R].南京:解放军理工大学,2007
  • 7Wang Y,Jiang J,Zhu D. Diesel oil pool fire characteris-tic under natural ventilation conditions in tunnels withroof openings[J]. Journal of hazardous materials, 2009,166(l):469-477.
  • 8Wang Y,Jiang J, Zhu D. Full-scale experiment researchand theoretical study for fires in tunnels with roof open-ings[J]. Fire Safety Journal, 2009,44(3) :339-348.
  • 9Huang YD, Gong XL,Peng YJ,Lin XY,Kim CN.Effects of the ventilation duct arrangement and duct ge-ometry on ventilation performance in a subway tunnel[J]. Tunnelling and Underground Space Technology,2011,26 (6):725-733.
  • 10Bi HQ, Lei B,Zhang WH. Fire smoke flow characteris-tics in urban road tunnel on natural ventilation mode[A]. Proceedings of the 2006 International Symposiumon Safety Science and Technology: IV,PART A[C],2006,877-881.

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