Basic information about Gaobazhou Hydropower Station

The hub layout from left to right is the left bank non-overflow dam, riverbed power station building, deep hole spillway dam section, surface hole overflow dam section, ship lift dam section and right bank non-overflow dam section . The length of the dam crest is 419.5m, and the maximum dam height is 57m. The normal water storage level is 80m, the reservoir storage capacity is 430 million cubic meters, and the backwater in the dam area is 50km long, connecting with the tail water of Geheyan Power Station.

A total of 15,633 acres of cultivated land have been submerged, requiring resettlement of 15,174 people.

The power station is a large (2) type. The Gaobazhou Hydropower Station hub is composed of a gravity dam, a power plant building and a navigation building. The layout of the buildings from left to right is the left bank non-overflow dam, power plant building, deep flood discharge hole, longitudinal cofferdam section, flood discharge surface hole, navigation building and right bank non-overflow dam.

The dam is a concrete gravity dam with a maximum dam height of 57m, a dam crest elevation of 83m, the upstream surface is vertical, the downstream dam slope is 1:0.75, and the total length of the dam crest is 439.5m.

There are ***3 dam sections in the deep hole spillway dam section, each dam section is 17m wide, the orifice size (width × height) is 9×9.4m, and there are arc-shaped working doors and flat access doors. The surface hole overflow dam section has a total of 6 dam sections, each dam section is 17.5m wide, equipped with curved working doors and flat access doors. The third riverbed power station is located on the left bank, with a unit section length of 78m and an installation length of 46m. The ship lift is located on the right bank and is a first-class vertical ship lift. It adopts wet transportation mode. The effective size of the ship-carrying box (length × width × height) is 42 × 10.2 × 1.7m. The navigable tonnage is 300 tons. The designed annual transportation volume is 67.8 in the near future. 10,000 tons/year, with a long-term capacity of 1.73 million tons/year. The power station has an installed capacity of 252,000 kW and an annual power generation of 898 million kWh.