Containing approx. 2.0 million m³ and with a completely forested area of approx. 200 ha, the retention area primarily serves to protect the Pfinz and the Pfinz Relief Canal against flooding. The dams bordering it over a length of approx. 3.8 km are to be restored over their entire length in accordance with the current state of the art. Furthermore, the associated inlet and outlet structures were to be included in the planning for the rehabilitation of the basin. In the meantime, the design and approval planning has been completed.
Due to the complex boundary conditions, a physical model test on a scale of 1:20 has been prepared and carried out since 2020 to prove the hydraulic performance of the new intake structure and to optimize the control of the overall system.
The contract for the surface model with dimensions of 15 m x 11 m was awarded to the Institute of Hydraulic Engineering and Technical Hydromechanics at the Technical University of Dresden. The test stand was erected in the newly constructed hydraulic engineering test hall, for which Tractebel Hydroprojekt had designed the pipe-engineering equipment for the water circuit and supervised construction from 2011 to 2014. The Dresden business unit is supporting the construction, implementation and evaluation of the model test. A video about the project is available here.
Dr. Holger Haufe – Dresden, Matthias Höhne – Freiburg i. Br.