油气管道寒区小断面隧道保温设计

发布时间：2018-02-22 04:25

本文关键词： 油气管道寒区隧道小断面数值模拟保温设计　出处：《油气储运》2017年09期 　论文类型：期刊论文

【摘要】：为解决季节性冻土隧道冻害现象影响隧道结构和运营安全的问题,结合寒区的气象和油气管道隧道内常年恒温、洞门常闭、小断面的特点,提出了适用于油气管道寒区小断面隧道保温设计。对管道和隧道围岩整体温度场进行模拟分析,依据隧道围岩温度及冻融情况,确定了设置保温隔热层的位置与长度;形成了一种油气管道寒区小断面隧道隔热保温层合理厚度的计算公式;设计了保温层与保温门联合防冻的方案。保温设计可应用于油气管道寒区小断面山岭隧道,对于大断面管道隧道也具有一定的指导意义。
[Abstract]:In order to solve the problem that the freezing injury phenomenon of seasonal frozen soil tunnel affects the tunnel structure and operation safety, combined with the characteristics of weather and oil and gas pipeline tunnel in cold region, the temperature is constant all year round, the tunnel door is often closed and the section is small. The heat preservation design of small section tunnel in cold zone of oil and gas pipeline is put forward. The whole temperature field of pipeline and surrounding rock of tunnel is simulated and analyzed. According to the temperature of surrounding rock and freezing and thawing of tunnel, the position and length of thermal insulation layer are determined. A formula for calculating the reasonable thickness of heat insulation and insulation layer of small section tunnel in cold zone of oil and gas pipeline is formed, and a scheme of combined freezing protection of insulation layer and thermal insulation gate is designed. The heat preservation design can be applied to small section mountain tunnel in cold area of oil and gas pipeline. It also has certain guiding significance for large section pipeline tunnel.
【作者单位】：中国石油管道局工程有限公司设计分公司;
【基金】：中国石油天然气集团公司科研项目“非常规盾构隧道穿越设计施工关键技术研究”,专科15-2-A
【分类号】：TE973.1

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