Pipe jacking is a specialist tunnelling method for installing underground pipelines with minimum surface disruption. Pipe-jacking, a newer construction technology, for the trenchless installation of underground pipelines, is widely used for long-distance pipelines, due to its high-performance, high-quality and low cost.
Powerful hydraulic jacks are used to push specially designed pipes through the ground behind a shield at the same time as excavation is taking place within the shield. The method provides a flexible, structural, watertight, finished pipeline as the tunnel is excavated.
Primarily used for gas and water mains, oil pipelines, electricity and telecommunication installations, culverts and subways, and new sewer construction including sewer replacement and relining.
SCG America, as the general contractor, currently has long-distance pipe jacking projects ongoing in Alberta Canada.