Browsing JC - Revista de la Escuela Colombiana de Ingeniería Julio Garavito by Subject "Oblique portals"
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Diseño de portales para evitar o reducir el corte en rocas
(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 ...