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Subterra Projects - Detailed engineering of Belesar III Hydropower. Spain
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Subterra Projects - Detailed engineering of Belesar III Hydropower. Spain

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Belesar III Hydroelectric Power Plant is a reversible central that requires the construction of intake and tailrace tunnels and a surge tunnel, what also involves the powerhouse cavern construction …

Belesar III Hydroelectric Power Plant is a reversible central that requires the construction of intake and tailrace tunnels and a surge tunnel, what also involves the powerhouse cavern construction for powerhouse with its corresponding
access tunnels. The project also envisages the construction of two gates shafts and a pressure shaft.
The length of the main tunnel is approximately 2,100 m with a water jump of 150 m and a cross section that allows keeping an internal diameter that varies between 6.0 and 7.4 m.

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  • 1. Proyecto Constructivo de la Central Hidroeléctrica de Belesar III. España. Detailed engineering of Belesar III Hydropower. Spain La Central Hidroeléctrica Belesar III es una central de paso reversible que exige la ejecución de túneles de toma y descarga y una chimenea de equilibrio, conllevando además una central en caverna con sus correspondientes túneles de acceso. El proyecto contempla además la ejecución de dos pozos compuertas y un pozo de carga. La longitud de la conducción principal es de 2.100 m aproximadamente con un salto de agua de 150 m y una sección de excavación que permite mantener un diámetro interior que varía entre los 6,0 y los 7,4 m. La excavación que albergará los diferentes equipos, está formada por tres cavernas cuyas dimensiones máximas son: 68 m de largo, 47 m de alto y 28 m de ancho. Tanto para la ejecución de las distintas cavernas como para la explotación de la central, será necesario la construcción de unos túneles de acceso de dimensiones 6,5 x 6,5 m. Los terrenos en los que se encuentra la obra descrita son granodioritas de calidad media y buena que permiten la le ejecución mediante excavación y voladura. En el caso de la ejecución de los pozos, éstos se realizaran empleando el método del raise-boring. Belesar III Hydroelectric Power Plant is a reversible central that requires the construction of intake and tailrace tunnels and a surge tunnel, what also involves the powerhouse cavern construction for powerhouse with its corresponding access tunnels. The project also envisages the construction of two gates shafts and a pressure shaft. The length of the main tunnel is approximately 2,100 m with a water jump of 150 m and a cross section that allows keeping an internal diameter that varies between 6.0 and 7.4 m. The excavation that will house the different equipments is composed of three caverns whose dimensions are 68 m long, 47 m high and 28 m wide. Both for the execution of caverns works and the hydroelectrical plant exploitation it will required the construction of access tunnels of dimensions 6.5 x 6.5 m. All excavation are medium to good quality granodiorites that allows the works execution by drill and blast method. In shafts cases, raise-boring method will be adopted. www.subterra-ing.com