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192936120-DISENO-DE-TUNELES-Y-OBRAS-SUBTERRANEAS-Piura-2012

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Diseño de Túneles y Obras Subterráneas

DISEÑO DE UN TUNEL

SECUENCIA CONSTRUCTIVA DE TÚNELES

9.- PERFORACION PARA PERNOS DE ANCLAJE 10.- OBRAS DE SOSTENIMIENTO

11.- CONTROL TOPOGRAFICO 12.- VENTILACION

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