Mechanical equipment of gate chambers of high-head spillways: Fid-Bau Portal

Mechanical equipment of gate chambers of high-head spillways

Kochanov, I. F. / Farmakovskii, S. V.

Conclusions For the first time in design practice Gidromontazh developed in the preliminary design stage mechanical equipment of a gate chamber of a deep spillway with vertical lift and radial regulating gates for passing discharges up to 2250 $ m^{3} $/sec at heads up to 200 m with an area of the outlet being closed up to 50 $ m^{2} $.The variant with an emergency-guard slide gate with an upstream π-shaped contour of the seal located on the gate and a main slide gate with an upstream flat closed contour of the seal located on the casing was taken as the main variant when developing the specifications.The high-velocity jet is diverted from elements of the downstream part of the chamber at all openings of the main gate by appropriate selection of the orifice dimensions and shapes of the lower edge of the upstream skin plate of the main gate.The parameters of the developed mechanical equipment are within the limits of the technological possibilities of manufacturing palnts.When designating the number of bays of the gate chamber it is advisable to strive for the creation of standard-size mechanical equipment in order to improve its quality, increase operating reliability, and increase the rate of construction works.The introduction of the developed equipment on the diversion tunnels of the I and II levels of the Rogun hydrostation makes it possible to reduce the cost of the gate chambers by 3.2 million rubles and to unify the mechanical equipment of the spillways of the hydrostation. We consider it expedient to develop further the specifications of the mechanical equipment of the diversion spillways of the Rogun hydrostation in two variants: with vertical lift and radial regulating gates.