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Bento Munhoz Hydroelectric Plant
The Governor Bento Munhoz da Rocha Netto Hydroelectric Plant, formerly known as Foz do Areia, is dam and hydroelectric power plant on the Iguazu River near Foz do Areia in Paraná, Brazil. It is the furthest dam upstream of the Iguazu Falls and was constructed between 1976 and 1980.〔(【引用サイトリンク】url=http://www.scielo.br/img/revistas/bjb/v63n4/19182f1.gif )〕 The power station has a capacity and is supplied with water by a concrete face rock-fill embankment dam.
As their main power plant, it is owned and operated by Copel who renamed it after Bento Munhoz da Rocha Netto, governor of Paraná between 1951 and 1955.〔(【引用サイトリンク】url=http://www.copel.com/hpcopel/english/nivel2.jsp?endereco=%2Fhpcopel%2Fenglish%2Fpagcopel2.nsf%2Fdocs%2F02B879C55BB3F0B7032574190050F379 )〕
==History==
In May 1973, Copel was awarded the concession contract to construct the dam and by May 1974, various studies had recommended a site near the confluence of the Inguazu and Da Areia Rivers. By August of that year, a design was chosen and in October 1976 after contracts were awarded, construction began. The river was diverted with two diameter and long diversion tunnels. To facilitate the river's diversion, two cofferdams were constructed, one upstream and one downstream of the site. The upstream cofferdam was high and allowed the diversion of up to of water. The dam began to impound the reservoir in 1980 and by October it was filled and complete.〔(【引用サイトリンク】url=http://www.chincold.org.cn/Files/20092817052803.pdf )〕
At the time of completion, the dam was the tallest and largest concrete face rock-fill dam in the world. It was also the first of its type to have a reservoir of its size. The techniques to construction the dam were instrumental and an advancement as of fill was placed each month for two years in a row. The stability and integrity of such a large dam with a large reservoir helped bring confidence to its specific design.〔(【引用サイトリンク】url=http://www.chincold.org.cn/dams/MilestoneProject/webinfo/2010/07/1279253974318817.htm )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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