After the completion of pipe jacking,D1219mm pipe is installed in the casing.Considering the large crossing depth of pipe jacking in the water area,the whole prefabrication sending scheme and the welding and one-by-one installation scheme in the whole shaft are explored.After pipeline welding,testing and anticorrosion are completed,the pipes in the casing are installed by means of roller+hoist,and the pipes in the shaft are installed by means of integral lifting.Through the application of the above technology,the pipeline installation of long distance pipe jacking can be completed efficiently,quickly and safely.
关键词
长距离顶管/管道安装/水域穿越/工程施工/项目建设
Key words
long distance pipe jacking/pipeline installation/water crossing/engineering construction/project construction
维普
万方数据