• Upstream dam
• Duct inlet diversion
• Diversion duct
(σήραγγα ή επιφανειακός)
• Duct outlet diversion
• Downstream barrier
River diversion
The following video shows the opening of the embankment to the entrance of the diversion tunnel and the simultaneous construction of the upstream dam to stop the normal flow of the river.
Diversion Pipes
Surface pipes in the foundation of the dam
• Small pipes (D <2.50 m), steel or concrete
• Small benefits
• Low construction costs
Diversion Tunnels
Underground diversion ducts (tunnels) in dam support. Usually large diameter pipes (D = 3-12 m) for diversion of large flows. High construction costs
Pipeline designs for free surface flow and pressure flow
Rectangular cross-section of inlet for installation of blocking gates • Background for distribution of loads of block beams (cases of large opening
Spillways
- Open type located on the dam
- Open type at reservoir slopes
- Tunnel type with intake at the reservoir slope
