Wehr Horkheim

The Challenge

The closures installed in the weir fields of the facility, with a total height of 7.60 meters, are riveted structures dating back over 90 years. These components show extensive corrosion and rust damage, while the original spur gearboxes used to operate the closures are outdated and no longer meet current technical standards. Additionally, the four 4.50-meter-wide weir piers, made of unreinforced tamped concrete, suffer from low strength and high porosity, making them vulnerable to water infiltration and frost damage. A comprehensive renovation was required to restore functionality and ensure long-term resilience.

The Solution

Tractebel developed a detailed rehabilitation plan involving the replacement of the old weir closures with modern roller gates equipped with flap attachments, along with new drive systems and updated electrical and control technology. The weir structure and connecting bridge are being repaired, and the drive houses rebuilt. To reinforce the aging concrete piers, cement injections are being applied, and anchors installed to prevent the weir base from floating during inspection work. These measures bring the facility up to modern engineering standards while preserving its critical role in regional water management.

The Impact

The renovation significantly enhances the technical reliability and service life of the weir facility, ensuring its continued effectiveness in flood protection for downstream communities. By modernizing key components and reinforcing structural integrity, the project safeguards vital infrastructure while aligning with contemporary safety and operational standards. Tractebel’s approach demonstrates its expertise in revitalizing legacy assets through innovative and sustainable engineering solutions.