HOBAS CC-GRP Culverts DN 3000 Jacked Under Railway
Jun 30, 2016
When a pipeline route crosses a railway embankment, jacking is usually the optimal installation method as it does not require disruptions in rail traffic. In the village of Cikowice in Southern Poland, four culverts with a diameter of 3000 mm and a length of 34 m each have been jacked under a railway line for the sake of flood control. HOBAS Poland supplied the required GRP pipes for this challenging project.
It was realized in the context of the modernisation of the railway line E30/C-E 30 and involved the construction of four large culverts beneath the railway embankment. If the water level rose again, the culverts should allow for the water to pass freely to the other side.
HOBAS Poland supplied the required pipes with an external diameter of 3000 mm for the realization of the culverts. The pipes’ smooth inner surface ensures that flood water which flows through them and usually contains various impurities does not lead to siltation. HOBAS Pipes also made it much easier to resume jacking works after an installation interruption due to heavy rain: The water causes the sandy soil to become slightly compacted and adhesive, and the thrust force required to restart works after the interruption is usually quite high. Thanks to the smooth outer surface, the necessary forces would be comparably lower and a restart quite easy. Before the start of the jacking works, the rail tracks were equipped with special beams that transferred the load from the trains evenly to the rails in case of any ground movements.
|Year of Installation||2014|
|Installation time||2 months|
|Total length of pipe||136 m in total, 4 parallel lines of 34m each|
|Pressure class||PN 1|
|Stiffness class||SN 40000, SN 64000|
|Application||Culvert beneath railway for flood protection|
|Installation method||trenchless installation / pipe jacking|
PKP (Polskie Linie Kolejowe) S.A.
(Polish rail infrastructure company)
|Contractor / Subcontractors||Intercor / PROI, PROI2|
smooth inner and outer wall surface,
high structural strength
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