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[1]高保彬,任闯难,刘彦伟,等.挡气板对综合管廊燃气泄漏扩散影响规律研究*[J].中国安全生产科学技术,2021,17(7):35-40.[doi:10.11731/j.issn.1673-193x.2021.07.006]
　GAO Baobin,REN Chuangnan,LIU Yanwei,et al.Study on influence laws of gas baffle on gas leakage and diffusion in utility tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(7):35-40.[doi:10.11731/j.issn.1673-193x.2021.07.006]
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挡气板对综合管廊燃气泄漏扩散影响规律研究*
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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7期
页码:
35-40
栏目:
学术论著
出版日期:
2021-07-31

文章信息/Info

Title:
Study on influence laws of gas baffle on gas leakage and diffusion in utility tunnel
文章编号:
1673-193X(2021)-07-0035-06
作者:
高保彬; 任闯难; 刘彦伟; 董群
（1.煤炭安全生产与清洁高效利用省部共建协同创新中心，河南 焦作 454000；
2.山西省资源环境与灾害监测重点实验室，山西 太原 030000；
3.河南理工大学 安全科学与工程学院，河南 焦作 454000）
Author(s):
GAO Baobin1; 2; 3;  REN Chuangnan1; 3;  LIU Yanwei1; 3;  DONG Qun1; 3
(1.State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization,Jiaozuo Henan 454000,China;
2.Key Laboratory of Resources,Environment and Disaster Monitoring of Shanxi Province,Taiyuan Shanxi 030000,China;
3.School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454000,China)
关键词:
综合管廊; 燃气泄漏; 挡气板; 探测报警; 危险区域
Keywords:
utility tunnel;  gas leakage;  gas baffle;  detection and alarm;  dangerous area
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2021.07.006
文献标志码:
A
摘要:
为研究挡气板对综合管廊燃气泄漏扩散影响规律，采用Fluent 软件模拟增设挡气板条件下泄漏燃气浓度分布特性，研究挡气板对探测效果及危险区域分布影响规律。结果表明：无通风情况下，增设挡气板可提升探测效果；正常通风条件下，探测效果无明显提升；挡气板高度达到0.5 m后，继续增加设置高度，探测效果无显著提升；无通风条件下，受挡气板区间段阻挡作用影响，燃气浓度危险区域扩张速度减小；正常通风条件下，挡气板背风侧安全区域间接促进泄漏燃气扩散排出，可有效防止管廊内部燃气聚集。研究结果可为优化综合管廊燃气舱可燃气体探测布置方案提供新思路与理论依据。
Abstract:
In order to study the influence laws of gas baffle on the gas leakage and diffusion in the utility tunnel,the Fluent software was used to simulate the concentration distribution characteristics of the leaked gas with adding the gas baffle,and the influence laws of gas baffle on the detection effect and the distribution of dangerous area were studied.The results showed that adding the gas baffle could improve the detection effect in case of without ventilation,and the improvement of detection effect was not significant in case of normal ventilation.When the height of gas baffle reached 0.5 m,the improvement of detection effect was not significant when increasing the setting height continuously.Under the condition of without ventilation,the expansion speed of the dangerous area of gas concentration decreased due to the restriction of the internal section of gas baffle.Under the normal ventilation,the safety area formed on the leeward side of gas baffle indirectly promoted the diffusion and discharge of the leaked gas,and effectively prevented the accumulation of gas in the utility tunnel.The results provide a new idea and theoretical basis for optimizing the layout scheme of the combustible gas detection system in the gas cabin of the utility tunnel.

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备注/Memo

备注/Memo:
收稿日期： 2021-03-13
* 基金项目： 国家自然科学基金-山西煤基低碳联合基金重点支持项目（U1810203）
作者简介： 高保彬，博士，副教授，主要研究方向为矿山及地下工程安全、采动损害与结构防护。
通信作者： 任闯难，硕士研究生，主要研究方向为矿山及地下工程安全、灾害演化数值模拟。
更新日期/Last Update: 2021-08-05