主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (6): 852-856.

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综合管廊燃气舱燃气泄漏安全响应研究

马博洋1 ,许淑惠1 ,李磊2 ,郝卿儒1 ,徐荣吉1 ,冯萃敏1   

  1. (1. 北京建筑大学 北京市建筑能源高效综合利用工程中心,北京 100044;2. 中国建筑科学研究院,北京 100013)
  • 收稿日期:2020-01-13 出版日期:2020-06-15 发布日期:2020-06-15
  • 通讯作者: 许淑惠(1966-),女,河北定州人,北京建筑大学环境与能源工程学院教授,硕士生导师。
  • 作者简介:马博洋(1996-),男,北京人,北京建筑大学建筑与土木工程学院硕士研究生,主要从事城市地下综合管廊方面研究,北京市西城区展览馆路 1 号,100044。
  • 基金资助:
    住房和城乡建设部研究开发项目(2018-K4-009);北京市科技计划项目(Z171100000517007)

Study on security response of gas leakage in gas cabin of utility tunnel

MA Bo-yang1, XU Shu-hui1, LI Lei2, HAO Qing-ru1, XU Rong-ji1, FENG Cui-min1   

  1. (1. Beijing Engineering Research Centre of Sustainable Energy and Buildings,Beijing University of Civil Engineering and Architecture, Beijing 100044, China;2. China Academy of Building Research, Beijing 100013, China)
  • Received:2020-01-13 Online:2020-06-15 Published:2020-06-15

摘要: 通过 Fluent 数值模拟及实验结果验证的方法,对于管廊内燃气泄漏后的安全响应问题进行分析研究。结果表明:当管廊发生燃气泄漏,燃气报警器响应时,启动事故通风并降低管道压力至 0.4 MPa,通风 150 s 后可进行在线修补;设定管道的切断浓度为爆炸下限的 45%,若报警器处浓度低于切断浓度,则继续进行事故通风并降低管道压力至 0.08 MPa,150 s 后可进行在线修补;若报警器处浓度高于切断浓度,则紧急切断,通风 310 s 后可进行管道修补。

关键词: 消防, 综合管廊, 燃气泄漏, 安全响应, Fluent

Abstract: The security response after gas leakage in the utility tunnel was analyzed and studied by simulation based on Fluent and verified by experiment. The results show that when gas leakage occurs in the utility tunnel and the gas detector alarms, the ventilation system is started and the pipeline pressure is reduced to 0.4 MPa. It can be repaired online after 150 s ventilation; if the concentration of alarm is lower than the cut- off concentration with the cut- off concentration set to be 45% of the lower explosive limit, the pipeline pressure will continue to be reduced to 0.08 MPa, and the pipeline pressure will be repaired on-line after 150 s of ventilation; if the concentration of the alarm is higher than the cut-off concentration, the emergency cut-off will be carried out. The pipeline will be repaired after ventilation for 310 s.

Key words: fire protection, utility tunnel, gas leakage, security response, Fluent

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