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隧道建设(中英文) ›› 2022, Vol. 42 ›› Issue (S2): 548-555.DOI: 10.3973/j.issn.2096-4498.2022.S2.069

• 监控与维护 • 上一篇    下一篇

公路隧道消防管道保温措施研究

林立彬1, 廉海浔2, 刘胜军3, 朱彤2, 王波1, 张双1   

  1. 1. 辽宁省交通规划设计院有限责任公司, 辽宁 沈阳 110005 2. 同济大学, 上海 200092; 3. 内蒙古高等级公路建设开发有限责任公司, 内蒙古 呼和浩特 010051 )

  • 出版日期:2022-12-30 发布日期:2023-03-27
  • 作者简介:林立彬(1974—),男,吉林农安人,1998年毕业于西南交通大学,建筑工程专业(地下工程与隧道工程方向),本科,教授级高级工程师,现从事公路隧道设计、养护技术管理与研究工作。 Email: llb_ln@163.com。

Thermal Insulation Measures of Fire Pipelines in Highway Tunnels

LIN Libin1, LIAN Haixun2, LIU Shengjun3, ZHU Tong2, WANG Bo1, ZHANG Shuang1   

  1. (1.Liaoning Transportation Planning and Design Institute Co.,Ltd.,Shenyang 110005,Liaoning,China;2.Tongji University,Shanghai 200092,China;3.Inner Mongolia High Grade Highway Construction and Development Co.,Ltd.,Hohhot 010051,Inner Mongolia,China)

  • Online:2022-12-30 Published:2023-03-27

摘要:

为分析隧道消防管道温度场的影响因素,探索一种节能、高效的保温措施,以金盆湾隧道为工程背景展开研究。首先,采用理论计算与三维数值模拟仿真相结合的方式,对比分析电伴热系统及微压循环定点加热系统的消防管道保温特点。然后,通过消防管道在稳态传热情况下的理论计算,分析能量消耗的影响因素和大致范围。最后,利用计算流体力学软件Fluent模拟计算了隧道内消防水管在突遇寒流后几天内的非稳态温度场。研究结果表明: 1)电伴热系统与微压循环定点供热系统所需的能耗基本相同; 2)外界冷空气通过消防水管管廊盖板之间的缝隙侵入消防管廊,降低了消防水管附近的温度,增加了散热损失,因此有必要减少消防管廊盖板之间的缝隙; 3)理论计算能够快速简单地得到辅助加热所需的功率,而数值模拟仿真计算能够考虑非稳态传热过程及更多结构细节引起的辅助加热功率变化。

关键词: 公路隧道, 消防管道, 非稳态热传导, 保温措施, 电伴热系统, 微压循环定点加热系统

Abstract:

In order to study the influencing factors of temperature field of tunnel fire pipeline and explore a kind of thermal insulation measure in consideration of both energysaving and efficient, the study is carried out by taking Jinpenwan tunnel as engineering background. First, the heat preservation characteristics of fire pipelines in electric tracing system and fixed point heating system with micropressure circulation are compared and analyzed by combining theoretical calculation and 3D numerical simulation. Then, through theoretical calculation of fire pipelines under steady heat transfer, the two insulation modes are established to analyze the influencing factors of energy consumption. Last, the unsteady temperature field of fire pipelines in tunnel is simulated by Fluent. The results show that: (1) The required energy consumption of electric heat tracing system and micropressure cycle fixedpoint heating system are approximately the same. (2) Outside cold air enters the fire pipe gallery through the gap between cover plates, causing the temperature near the fire water pipe reduce and the heat loss increase. So it is necessary to reduce the gap between the cover plates of the fire pipe gallery. (3) Theoretical calculations can quickly and simply obtain the power required for auxiliary heating, and numerical simulation can take into account the variation of auxiliary heating power and more structural details during unsteady heat transfer process.

Key words:

highway tunnel, fire pipeline, unsteady heat transfer; thermal insulation measure, electrical heat tracing system, micropressure cycle fixedpoint heating system