At last the first shore spillway unit of Sayano-Shushenskaya HPP is being launched! Here are some photos of the structure.
A grandiose view of the shore spillway. The structure contains an intake portal, two free-flow downstream tunnels with section 10x12m, an outlet portal, a five-phase fall and an offtake channel.
The ground over the intake portal
The intake portal serves for the gradual intake of water into two free-flow downstream tunnels each 1130m long, full-capacity discharge of each tunnel is 2000m3/s of water.
Relief tunnels along the full length and perimeter are consolidated with a trough-shaped monolithic reinforced concrete encasement. Water flow speed at the outlet - 22m/s, operational mode of the tunnels - the free-flow one. On the picture - a segmental gate and its chamber.