A project uses the remaining space of the existing tunnel to install D1219mm pipeline,and a D1016mm pipeline has been installed in the existing tunnel,but the remaining space is limited and narrow,and the pipeline installation in the tunnel is very difficult.Considering that the section design of the existing tunnel is based on the installation of two pipelines at the beginning of the design.Based on the principle of saving investment,saving time and making full use of existing channel resources,the scheme of installing existing pipelines in limited remaining space is designed.In this scheme,the pipeline distribution,matching,welding,non-destructive testing and anti-corrosion patching are completed outside the tunnel entrance,and the pipeline traction system is set outside the tunnel exit to pull the pipeline into place,so as to realize the pipeline installation in the existing tunnel.This project uses the remaining space of the existing tunnel to complete the welding assembly of the pipeline outside the tunnel,and completes the installation of the pipeline through the pipeline transmission system,which not only saves the problem of new tunnels,but also shortens the project period,and provides a reference for the future laying of new pipelines in the existing tunnels.
关键词
已建隧道/剩余空间/管道安装/新建隧道
Key words
tunnels have been built/the remaining space/pipeline installation/new tunnel
维普
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