We have developed a technique of pipe jacking in steel core under railroad tracks that makes it possible to cross the tracks safely, without slowing down and without temporary bridges, even in cases where the roof covering is low.
Jacking consists in pushing a column of pipes from a shaft below ground, by winning the ground whilst being protected by a drum-curb ahead that maintains the ground compressed.
The pipe that is specifically designed for this method of use is extremely resistant and lasting. It can be used as a fourreau or even directly for under pressure water.
References: ONCF, LYDEC, REDAL.
Jacking works from DN800 to DN1500.
