本文以古交兴能电厂至太原供热主管线及中继能源站工程隧道工程第三合同段、DN1400上供下回双线管道安装施工为实例,详细介绍了隧道内大口径管道运输方法选择、管道支座调整、管道对口施工、钢支架安装工艺、供水管安装顺序的选择等,形成了成熟的隧道内大口径管道安装施工工艺.%This paper takes Gujiao Xingneng power plant to Taiyuan heating pipe line and Zhongji energy station third contract section of tunnel engineering, DN1400 offernext double pipe installation construction as an example, and it introduces the choice of large diameter pipeline construction, installation technology of steel bracket, selection of water supply pipe installation sequence and so on, which will form a mature installation and construction process of large diameter pipelines in tunnels.
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