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Introduction The hydropower project of Cerro del Águila is under construction in the external Andes, 240 km east of Lima, close to the small town of Pampas (Province Tayacaja, Peru, Figure 1). Figure 1. Location map of the Cerro del Águila hydropower project. It exploits the waters of Río Mantaro, shortcutting a 23 km long river loop at roughly 150...
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Context 1
... project is located in the Eastern Cordillera of the Andes, east of the intervening Altiplano. The tectonic set-up is that of a "flat slab" branch of the Nazca-South American subduction zone, where the 30°-inclined subduction proceeds down to about 100 km and then flattens out (Figure 3). The convergence rate is 7 to 9 ...
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Citations
... The tunnels are located in the pre-mesozoic basement of metamorphic, pelitic to calcareous rocks, intruded by gran- ites/granodiorites (Figs. 2a and 2b) [4]. The high grade meta- morphic rocks belong to the Ambo-Copacabana group of probably Paleozoic age and are composed of hornfelses, skarns and marbles. ...
The Cerro del Águila project in Peru is a major hydropower scheme presently being commissioned and
scheduled to be opened in July 2016. This new 520 MW scheme includes a 90 m high roller-compacted
concrete (RCC) gravity dam, around 12 km of hydraulic and utility tunnels and two underground caverns
for turbines/generators and transformers/GIS, all excavated by drill and blast. This article deals with the
design and construction of the tunnels, highlighting several construction issues.
... The tunnels are located in the pre-mesozoic basement of metamorphic, pelitic to calcareous rocks, intruded by gran- ites/granodiorites (Figs. 2a and 2b) [4]. The high grade meta- morphic rocks belong to the Ambo-Copacabana group of probably Paleozoic age and are composed of hornfelses, skarns and marbles. ...
The Cerro del Águila project in Peru is a major hydropower scheme presently being commissioned and scheduled to be opened in July 2016. This new 520 MW scheme includes a 90 m high roller-compacted concrete (RCC) gravity dam, around 12 km of hydraulic and utility tunnels and two underground caverns for turbines/generators and transformers/GIS, all excavated by drill and blast. This article deals with the design and construction of the tunnels, highlighting several construction issues.
