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Diseño de portales para evitar o reducir el corte en rocas
Arias, Mario; Salazar Ferro, Ricardo (Escuela Colombiana de Ingeniería Julio Garavito, 2017)Restrictions on topography lead to designs of portals that do not necessarily intersect with the axis of the track at a right angle. The lack of appropriate guidelines in the design for portals and a vague understanding ...