First Large-Scale Hydroelectric Project—Tucuruí Dam

The Tucuruí Dam is a concrete gravity dam on the Tocantins River located on the Tucuruí County in the State of Pará, Brazil. The main purpose of the dam is hydroelectric power production and navigation. It is the first large-scale hydroelectric project in the Brazilian Amazon rainforest. The installed capacity of the 25-unit plant is 8,370 megawatts.

The main portion Tucuruí Dam is a 78-metre-high and 6.9-kilometre-long concrete-gravity dam. The addition of the Mojú and Caraipé earth-fill dikes increases the total length to 12,515m. The main dam’s Creager-type service spillway is the second largest in the world with a maximum capacity of 110,000 cubic metres per second. It is controlled by 20 floodgates measuring 20 by 21 metres.

As an efficient and new technology, self drilling anchor bolt has became very popular in the applications of hydroelectric projects in recent years. Self drilling anchor in hydroelectric project can be used for supporting slope, reinforcing surrounding terrain and avoiding hole collapse or other geological disasters.

The anchor bar can be connected with another one by the coupler so as to lengthen to the designed depth. The sacrificial drill bit is made of the material with strong penetrating power, which can drill rock with different hardness. The nut can concentrate and transfer stress to its plate. In the construction of hydroelectric projects, the cement is grouted through the anchor bar, the collapsed borehole can be fully grouted and the stability of the rock condition will be extensively improved. Based on lots of successful actual practices, self drilling anchor bolt is proved to be an ideal anchoring technology for hydroelectric projects construction.

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