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Construction Control in the Pipe Jacking of a Sewage Interception Project
With the engineering practice of a Sewage Interception Project, the essential technical measures on the construction of pipe jacking during long-distance were discussed, which mainly include the construction of the jacking shaft, the jacking pipes breakthrough technique, correction and guidance in construction, partial air pressure balance method when jacking through drift sands or flow plastic soil, drag-reduction using thixotropic slurry, arrangement of the pipe section with different types of grouting holes, soil reinforcement using cement slurry to replace thixotropic slurry after the completion of the jacking and interjack station techniques in long-distance pipe jacking. After being jacked through deviation of the jacking pipe axis was within 60mm and deviation of the elevation was within 50mm; soil movement had no significant effect on the pipelines nearby; construction proceeded fast as earthwork was effectively reduced; damage to environment was limited to minimum because of low noise in underground construction and the concentrated emission of soil and slurry. The result showed that good economic and social benefit was achievable using the above-mentioned technical measures in long-distance pipe jacking.
Construction Control in the Pipe Jacking of a Sewage Interception Project
With the engineering practice of a Sewage Interception Project, the essential technical measures on the construction of pipe jacking during long-distance were discussed, which mainly include the construction of the jacking shaft, the jacking pipes breakthrough technique, correction and guidance in construction, partial air pressure balance method when jacking through drift sands or flow plastic soil, drag-reduction using thixotropic slurry, arrangement of the pipe section with different types of grouting holes, soil reinforcement using cement slurry to replace thixotropic slurry after the completion of the jacking and interjack station techniques in long-distance pipe jacking. After being jacked through deviation of the jacking pipe axis was within 60mm and deviation of the elevation was within 50mm; soil movement had no significant effect on the pipelines nearby; construction proceeded fast as earthwork was effectively reduced; damage to environment was limited to minimum because of low noise in underground construction and the concentrated emission of soil and slurry. The result showed that good economic and social benefit was achievable using the above-mentioned technical measures in long-distance pipe jacking.
Construction Control in the Pipe Jacking of a Sewage Interception Project
Yang, Zhuanyun (author)
International Conference on Pipelines and Trenchless Technology (ICPTT) 2009 ; 2009 ; Shanghai, China
ICPTT 2009 ; 1425-1432
2009-09-15
Conference paper
Electronic Resource
English
Oil pipelines , Trenchless technology , Installation , Sewer pipes , Water pipelines , Sewage , Seismic effects , Slurries , Design , Corrosion , Pipes , Rehabilitation , Gas pipelines , Jacking , Pipelines
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