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[1]任松,牟其博,李玉,等.脉动通风在螺旋隧道施工期的应用研究[J].中国安全生产科学技术,2021,17(11):144-151.[doi:10.11731/j.issn.1673-193x.2021.11.022]
　REN Song,MOU Qibo,LI Yu,et al.Application research of pulsed ventilation in construction period of spiral tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(11):144-151.[doi:10.11731/j.issn.1673-193x.2021.11.022]
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脉动通风在螺旋隧道施工期的应用研究
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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11期
页码:
144-151
栏目:
职业安全卫生管理与技术
出版日期:
2021-11-30

文章信息/Info

Title:
Application research of pulsed ventilation in construction period of spiral tunnel
文章编号:
1673-193X(2021)-11-0144-08
作者:
任松; 牟其博; 李玉; 陈钒; 杨松
（1.重庆大学 煤矿灾害动力学与控制国家重点实验室，重庆 400044；
2.中电建路桥集团有限公司，北京 100048)
Author(s):
REN Song;  MOU Qibo;  LI Yu;  CHEN Fan;  YANG Song
(1.State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China;
2.Power China Road Bridge Group Co.,Ltd.,Beijing 100048,China)
关键词:
脉动通风; 施工期污染物; 脉动幅值; 脉动频率; 数值模拟
Keywords:
pulsed ventilation;  pollutant during construction;  pulsation amplitude;  pulsation frequency;  numerical simulation
分类号:
X913
DOI:
10.11731/j.issn.1673-193x.2021.11.022
文献标志码:
A
摘要:
为提高施工期通风排除污染物效率，将脉动通风方法应用于螺旋隧道中，通过理论分析研究脉动通风在隧道施工期排除污染物的原理，采用FLUENT软件模拟不同脉动幅值、脉动频率下隧道内污染物浓度变化情况。研究结果表明：脉动通风可有效减少螺旋隧道内涡流区面积，优化隧道风流流场；脉动通风方式可使积聚在涡流区内的污染物产生纵向脉动速度，并加强风流横向脉动；脉动通风对爆破后排出CO气体效果不明显，但对降低喷浆过程粉尘浓度效果显著，数值模拟与理论研究结果吻合；排除污染物效果与脉动幅值无明显关系，与频率关系显著，且频率较小时效果更好。
Abstract:
In order to improve the efficiency of the elimination of pollutants by ventilation during the construction period,the pulsed ventilation method was applied to the spiral tunnel.The principle of pulsed ventilation to eliminate the pollutants during tunnel construction was studied through theoretical analysis,and the FLUENT software was used to simulate the variation of pollutant concentration in tunnel under different pulsation amplitudes and pulsation frequencies.The results showed that the pulsed ventilation could effectively reduce the area of eddy zone in the spiral tunnel and optimize the wind flow field of tunnel.The pulsed ventilation method could make the pollutants accumulated in the vortex zone generate the longitudinal pulsation velocity and enhance the lateral pulsation of wind flow.The pulsed ventilation had no obvious effect on the discharge of carbon monoxide after blasting,but it had a significant effect on reducing the dust concentration in the gunite lining process,and the results of numerical simulation were consistent with the theoretical research results.The elimination effect of pollutants had no obvious relationship with the pulsation amplitude,but it was significantly related to the frequency,and the effect with smaller frequency was better.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期： 2020-12-16；网络首发日期： 2021-11-26
作者简介： 任松，博士，教授，主要研究方向为隧道施工安全、岩土工程监测及可靠性分析、岩层稳定性及控制、盐岩油气储库造腔理论及工艺。
通信作者： 牟其博，硕士研究生，主要研究方向为隧道通风与安全控制。
更新日期/Last Update: 2021-12-08