Underground mining and quarrying operation through...

Details Underground mining and quarrying operation through... Underground mining and quarrying operation through...

E - Fixed Constructions

21

C

61/66

E21C 41/18 (2006.01) E21C 41/16 (2006.01)

Patent

CA 1280614

PRECIS DE LA DIVULGATION: Procédé d'exploitation de mines ou carrières souterraines par enlevures descendantes et foudroyage et installation pour sa mise en oeuvre. Le procédé est caractérisé en ce que l'on divise le plafond en une pluralité de zones de plafond soutenues indépendamment les unes des autres et, au fur et à mesure que l'on extrait du minerai sous ce plafond, on foudroie de proche en proche lesdites zones sur une hauteur limitée. L'invention trouve une application notamment dans l'extraction du charbon, de minerais métalliques etc...

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