Jirau Dam

BW

The Jirau Dam ( Usina Hidrelétrica Jirau ) is an under construction dam with a hydroelectric plant on the Madeira River in the Brazilian state of Rondônia.

Project

The dam is part of a complex of four planned hydroelectric plants on the Madeira River. This consists of two dams in Brazil ( the Santo Antonio dam with 3150 MW in the city of Porto Velho and Jirau with 3750 MW about 100 km upstream ), a third on the border between Brazil and Bolivia, and a fourth in Bolivia. The two in Brazil, Santo Antonio and Jirau are currently completed or under construction, while the smaller upstream are still in the planning phase. Because of the power outages in Brazil from 2001 to 2002, the construction was accelerated in 2009, Santo Antonio went into operation in 2011 and Jirau it is from 2013. The cost for both is estimated at 15.6 billion U.S. dollars, of which 8 billion for Jirau including 10 billion for buildings and 5 billion for the ship locks, transmission lines and balancing environmental measures.

Building

The Jirau Dam will be a combination of a rockfill dam with concrete sections for the power plant and the spillway. The total length of the dam is 1100 m, the proportion of the bulk dam is 800 m. The curved dam will be 63 meters high and contains an asphalt concrete core. His building volume is 2,000,000 cubic meters, of which 17,000 m³ asphalt are. The spillway will get 21 holes and sustain a maximum outflow of 82,000 m³ / s. The hydroelectric power plant receives 50 pieces 75 -MW Kaplan bulb turbines for a total installed capacity of 3,750 MW. The pent-up of the dam reservoir will have a surface area of 258 km ², of which 135 km ² the river bed are original. Kaplan bulb turbines are similar to Kaplan turbines, except that they are mounted horizontally, so that the force redirection and efficiency are better. The energy can be recovered from the hydraulic head of 15.1 m and from the kinetic energy of the incoming water. The hydropower plant is being built by the French GDF Suez SA and Camargo Corrêa SA of Brazil. The turbines are scheduled to go into operation between 2012 and 2016.

In March 2011, the construction works were stopped by workers' revolts.

Swell

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