Research - Research Projects

Federwehr (spring weir): Scientific monitoring at the weir Pouilly-sur-Meuse

Research project of the Chair of Hydraulic Engineering

back to all research projects

Short description

At the Pouilly-sur-Meuse weir, the Meuse (= Meuse) is dammed with an attachment of wooden elements on a fixed weir body in order to achieve the damming target relevant for the hydropower plant. Until now, the wooden elements have had to be put down manually by the warden to release the necessary discharge cross-section in order to comply with the permissible water level levels during increased discharges and flood events.

The operator of the plant plans to replace the existing system due to a spring weir (FDW), which lowers automatically during floods and thus releases the discharge cross-section without additional personnel or mechanical drive. The more advanced variant (Federwehr (spring weir) ) ) is to be used on the weir back of the existing weir body in order to achieve a weir target elevation of 70 cm at the existing weir. For the FDW to function properly, it is crucial that the lowered (completely laid down) spring weir is completely lowered to the original crest level in the event of a flood.

On a section with a length of 10 m, the weir's reversal behavior is to be validated and the function of the weir confirmed for this location. The Chair of Hydraulic Engineering is planning the test setup with the associated measuring system and will accompany the test operation for various discharge conditions.