摘要
针对重载铁路隧道高火荷载分布下火灾特点,定性分析了重载铁路隧道的火灾高发性、后果严重性及燃烧控制方式。分析表明,重载铁路运输量大、行车密度高、行车速度快、货物易燃等是造成其火灾高发性的关键因素;重载铁路隧道火灾燃烧热释放速率大、易造成隧道衬砌破坏、易引发火灾快速蔓延。运用4种方法对重载铁路隧道火灾控制方式进行判定,结果表明重载铁路隧道火灾多为通风控制燃烧。结合这些特点,提出了针对重载铁路隧道火灾进一步研究的建议。
According to the fire characteristics of heavy-haul railway tunnel with high fire load,the frequent-occurrence,the serious consequences and combustion control mode of fire in heavy-haul railway tunnel are qualitatively analyzed.The result demonstrates that heavy transport volume,high density,high speed,and flammable goods are the key factors leading to frequently-occurring of tunnel fire.It also shows that high heat release rate in the tunnel would cause fire spread quickly and result in the severe damage of tunnel lining easily.Four methods are employed to determine the combustion mode of heavy-haul railway tunnel fire further,and the results show the fire are primarily controlled by ventilation.Based on the characteristics above,some suggestions about further research for heavy railway tunnel fire are proposed.
出处
《消防科学与技术》
CAS
北大核心
2013年第5期554-558,共5页
Fire Science and Technology
基金
国家自然科学基金项目(50706059)
湖南省自然科学基金重点项目(12JJ2033)~~
关键词
重载铁路
隧道火灾
热释放速率
通风控制
heavy haul railway
tunnel fire
heat release rate
ventilation control
