燃气技术GasTechnology doi:10.3969/j.issn.16715152.2016.06.001
埋地天然气管道与直埋蒸汽管道间距的探讨口杭州市城乡建设设计院股份有限公司（315040）周经纬顾紫娟张海霞张晓萍摘要：在城市热力管网的城市中，处理天然气管道与直埋蒸汽管道相互关系是常见情况。实际
运行中，出现许多直埋蒸汽管道遗第三方施工损坏及管道外壁温度超限的情况，对临近天然气管道的安全构成威胁。本文通过实测结合理论计算的方式，在直理蒸汽管道外壁温度超限时，分析直理蒸汽管道周边土壤温度场分布情况及直埋蒸汽管道对天然气管道的影响，并给出了天然气管道与直埋蒸汽管道间距控制与安全运行的建议。
关键词：天然气管道直理蒸汽管道安全间距温度
ResearchontheSpacingbetween
DirectlyBuriedGasPipelineandSteamPipeline Zhou Jingwei, Gu Zijuan, Zhang Haixia, Zhang Xiaoping
A bstract :Ningbo is one of the few south city which has urban heat pipe network,deal with the relationship
between gas pipeline and directly buried steam pipeline is one of the common case. In fact , there are many directly buried steam pipeline damaged by third party construction ,and the outer wall of pipeline temperature exceed the limit which poses a threat to the safety of the near gas pipeline a threat to the safety of the near natural gas pipeline, there are mu gas pipelines damaged in this case. Combined with the actual measurement and theoretical calculation, when the outer wall temperature of directly buried steam pipeline overruns , the surrounding soil temperature field distribution of directly buried steam pipeline and the influence of directly buried steam pipeline to gas pipeline is analyzed. The suggestion of the spacing between directly buried gas pipeline and steam pipeline is given,which guides the safe operation of gas pipeline.
Keywords:gas pipelinedirectly buried steam pipelinesafe spacingtemperature
1概述
根据《城镇燃气设计规范》"（GB50028-2006）中6.3.3的规定，地下燃气管道与直埋蒸汽管道之间
4城市燃气2016/06总第496期万方数据
的水平安全净距为1.0m~2.0m，与热力管、热力管的管沟底（或项）之间的重直安全净距为0.15m。该规定的间距是在参考各地燃气公司和有关其他地下管线规范以及实践经验后，在保证施工和检修时