Charmine dam (France)

Design of an additional spillway on the dam

Client : EDF - CIH - Model scale : 1/35

Background

Artelia was contacted by the EDF hydraulic engineering center with a view to studying various developments aimed at increasing the capacity of the flood spillway while remaining below the maximum water level elevation.

Aim of scale model

• Check the capacity of the components of the present spillway,
• Study the flow conditions;
• Test the capacity of an additional PK Weir type spillway;
• Check the energy dissipation conditions with two different outlet chute solutions.

Description of scale model

• Large part of the reservoir represented to ensure that approach currents were correctly represented
• Existing and manoeuvrable gates
• Additional developments e.g. PK Weir
• Two types of chute: smooth chute with flip bucket and stepped chute