Dimensionamiento y sostenimiento de minas subterráneas de pizarra
- Taboada Castro, J.
- Gutierrez Blanco, F.
- González Nicieza, C.
- Toraño Álvarez, J.
ISSN: 0213-4497
Ano de publicación: 1994
Número: 19
Páxinas: 419-435
Tipo: Artigo
Outras publicacións en: Cadernos do Laboratorio Xeolóxico de Laxe: Revista de xeoloxía galega e do hercínico peninsular
Resumo
We've studied the conditions about dimensions and support of an underground mine of roofing slate in Galice, worked by rooms with continuous pillars. The rock mass was characterized by the empiric and analitic methods, calculating the stable pillar wide along the mine by the theory of attributed area and by a model of finite elements, where the breaking criterion of Hoek and Brown was applied. The result was a parabolic relationship between pillar wide and mine length. Stability studies in an isolated stope give an elastic performance on the periphery of the room, without tractions. Although the stability of the mine is good, a systematic support is recommended on the basis of bolts, that will be reinforced with projected concret at the top, and a singular treatment of the detected wedges.