Roof gate for whitewater stadiums and flow regulation

The roof gate is a metal component installed in a rectangular recess. The roof gate is operated by a hydraulic cylinder.

The downstream part of the roof gate, known as the “gate roof”, is specially designed to ensure the safe passage of boats: bed sills raise the water surface profile.

This type of gate offers great flexibility in operation, as it allows the downstream flow to be easily adjusted according to the upstream water level. Regardless of its position, boats can pass through.

The technology

The technology

The roof gate is a metal structure whose function is to shut off and regulate the flow in the whitewater stadium. It must also allow boats to pass through.

The roof gate consists of two parts:

  • The flap, whose functions are to provide the watertightness required to retain the water upstream and to control the flow admitted downstream by lowering to a greater or lesser extent.
  • The roof, whose function is to guide the sheet of water discharged over the flap into the downstream basin. The roof is equipped with deflectors designed to generate attractive and safe water movements. This system was studied using a scale model in the laboratory. Thus, the roof gate becomes an element of the whitewater course.
Serving Numerous Facilities

Serving Numerous Facilities

It is important to note that the roof gate can also serve as a fish pass (when open), with the retarders creating the hydraulic conditions required for upstream fish passage. Finally, this type of gate can also be found on certain dams.

To ensure the safety of the course, an emergency stop function commands the immediate raising of the roof gate to cut off the flow in the whitewater river.

Discover our
Projects

Access the details of a project by selecting a point on the map.

Other products
Whitewater