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[1]陈长坤,王玮玉,史聪灵,等.隧道内通风及障碍物对甲醇蒸气扩散的影响分析[J].中国安全生产科学技术,2017,13(3):124-130.[doi:10.11731/j.issn.1673-193x.2017.03.020]
　CHEN Changkun,WANG Weiyu,SHI Congling,et al.Study on influence of ventilation and obstacles on diffusion of methanol vapor in tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(3):124-130.[doi:10.11731/j.issn.1673-193x.2017.03.020]
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隧道内通风及障碍物对甲醇蒸气扩散的影响分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年3期
页码:
124-130
栏目:
现代职业安全卫生管理与技术
出版日期:
2017-03-31

文章信息/Info

Title:
Study on influence of ventilation and obstacles on diffusion of methanol vapor in tunnel
文章编号:
1673-193X(2017)-03-0124-07
作者:
陈长坤1; 王玮玉1; 史聪灵2; 刘晅亚3
1. 中南大学 防灾科学与安全技术研究所, 湖南 长沙 410075； 2. 中国安全生产科学研究院 地铁火灾与 客流疏运安全北京市重点实验室，北京 100012；3. 建筑消防工程技术公安部重点实验室，天津 300381
Author(s):
CHEN Changkun1;  WANG Weiyu1;  SHI Congling2;  LIU Xuanya3
1. Institute of Disaster Prevention Science and Safety Technology, Central South University, Changsha Hunan 410075, China; 2. Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing 100012, China; 3. Key Laboratory of Building Fire Protection Engineering and Technology of MPS, Tianjin 300381, China
关键词:
隧道; 通风; 障碍物; 蒸气扩散
Keywords:
tunnel;  ventilation;  obstacle;  vapor diffusion
分类号:
X951
DOI:
10.11731/j.issn.1673-193x.2017.03.020
文献标志码:
A
摘要:
为了研究环境条件对甲醇蒸气扩散以及危险区域的影响，应用CFD方法对隧道内甲醇蒸气的扩散进行模拟。结果表明：隧道内通风能够避免泄露区域产生蒸气积聚；障碍物位于泄漏源的上风向时，通过障碍物的紊乱风流携带作用较强，使甲醇蒸气在下游空间的分布更广，形成的危险区域也较大；障碍物较多时，隧道内的流场紊乱程度较大，气流的携带作用和障碍物间的蒸气积聚作用较强，导致蒸气分布范围广且规律性差；在通风与障碍物的综合影响作用下，甲醇蒸气扩散和分布主要集中于隧道的中下部，上部稳定的气流使蒸气不易产生积聚。
Abstract:
To study the influence of environment conditions on the diffusion of methanol vapor as well as dangerous zone, the diffusion of methanol vapor in tunnel was simulated by using CFD method. The results showed that the ventilation in tunnel can avoid the accumulation of vapor in leakage area. When the obstacle is located in upwind of leakage source, the carrying effect of disordered air flow passing the obstacle is stronger, which make the methanol vapor distribute more widely in downstream space, as well as a larger dangerous zone. The more the obstacles, the larger the disorder degree of flow field in tunnel, the stronger the carrying effect of air flow and the accumulation effect of vapor among the obstacles, which make the vapor distribute widely with a poor regularity. Under the combined effect of ventilation and obstacle, the diffusion and distribution of methanol vapor are mainly concentrated at the middle and lower part of tunnel, while the stable air flow at the upper part make the vapor cannot accumulate easily.

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备注/Memo

备注/Memo:
国家自然科学基金项目（51576212, 51622403）；国家重点研发计划课题(2016YFC0802501)；建筑消防工程技术公安部重点实验室开放课题(KFKT2014ZD02)；中央高校基本科研业务费专项资金资助项目
更新日期/Last Update: 2017-03-30