|本期目录/Table of Contents|

[1]张雄.坡度对跨座式单轨隧道临界风速的影响[J].中国安全生产科学技术,2021,17(12):123-128.[doi:10.11731/j.issn.1673-193x.2021.12.020]
　ZHANG Xiong.Influence of slope on critical wind velocity of straddle monorail tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(12):123-128.[doi:10.11731/j.issn.1673-193x.2021.12.020]
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坡度对跨座式单轨隧道临界风速的影响
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年12期
页码:
123-128
栏目:
职业安全卫生管理与技术
出版日期:
2021-12-31

文章信息/Info

Title:
Influence of slope on critical wind velocity of straddle monorail tunnel
文章编号:
1673-193X(2021)-12-0123-06
作者:
张雄
(中铁四院集团西南勘察设计有限公司，云南 昆明 650220)
Author(s):
ZHANG Xiong
(SIYUAN Southwest Survey and Design Co.,Ltd.,Kunming Yunnan 650220,China)
关键词:
跨座式单轨隧道; 坡度; 大火源功率; 临界风速
Keywords:
straddle monorail tunnel;  slope;  large fire source power;  critical wind velocity
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2021.12.020
文献标志码:
A
摘要:
为研究不同坡度隧道在大功率火源情况下的烟气运动，采用1∶20的缩尺隧道模型，通过试验对不同坡度情况下(-6%,-3%,0%,3%,6%)的大火源功率火灾(20,50 MW)时的隧道纵向通风临界风速进行研究。结果表明：0%坡度时，20 MW和50 MW的临界风速相差不大；有坡度时，逆坡送风的临界风速大于顺坡送风的临界风速。根据试验结果拟合得出大火源功率(20,50 MW)条件下坡度为-6%至6%时的临界风速与坡度的关系，并对前人提出的坡度与临界风速的关系式进行修正。
Abstract:
In order to study the smoke movement in the tunnel with different slopes under large fire source power,a 1/20 reduced scale tunnel model was adopted to study the critical wind velocity of longitudinal ventilation in the tunnel with different slopes (-6%,-3%,0%,3%,6 %) under large fire source powers (20MW,50MW) through the experiments.The results showed that when the slope was 0%,the critical wind velocities under 20 MW and 50 MW were close.When the tunnel had a slope,the critical wind velocity with uphill air supply was greater than that with downhill air supply.According to the fitted experimental results,the relationship between the critical wind velocity and the tunnel slope ranging from -6% to 6% under large fire source powers (20MW,50MW) was obtained,and the relationship formula between the slope and the critical wind velocity proposed by the predecessors was revised.

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备注/Memo

备注/Memo:
收稿日期： 2021-03-04
作者简介： 张雄，本科，高级工程师，主要研究方向为城市轨道交通设计。
更新日期/Last Update: 2022-01-16