The Iffezheim lock system is one of the largest and most efficient two-chamber locks in Europe. It consists of two parallel lock chambers, each with a usable chamber length of 270 m and a width of 24 m. Depending on the Rhine water level in the downstream water, the lifting height is up to 12.50 m. The chambers are filled and emptied using two longitudinal channels and nozzles in the side walls.
An average of 25,000 cargo and freight ships with a total of approx. 22 million tonnes of goods are locked through here every year.
The upper gate of the right chamber, which is designed as a sectored cone, was irreparably destroyed by a collision on 11 November 2023 and is now to be replaced.
Client: Wasserstraßen- und Schifffahrtsamt Oberrhein (branch Freiburg)
Processing period: 2024
Main data:
Year of construction: 1977
Dam target: NN + 123.60 m + 0.50 m surge (upstream), NN + 117.70 m (bottom sill), NN + 110.50 m + 0.50 m sunk (downstream)
Difference in height OW-bottom: dH = 6.40 m
Clear width: 25,780 mm (over all), 24,600 mm (span)
Closure height: 10,965 mm (over all), 6,600 mm (dam wall)
Locking weight: 79 tonnes (steel construction)
Services:
Technical processing of new upper gate (OT) (incl. optimisation with regard to weight potential/operability/maintenance etc.)
Preparation of technical documentation (structural calculations, design, execution and workshop plans, test plans, etc.)
Technical processing of OT assembly
Surveying of the OT niche