FR1088438A - Procédé pour la mise en place d'étançons extensibles de mines et étançons extensibles pour la mise en oeuvre de ce procédé
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Procédé pour la mise en place d'étançons extensibles de mines et étançons extensibles pour la mise en oeuvre de ce procédé
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E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
E21D15/58—Devices for setting props or chocks
E21D15/581—Devices for setting props or chocks in which the props are pre- loaded
E21D15/5817—Devices for setting props or chocks in which the props are pre- loaded in which the lock is also activated
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Engineering & Computer Science
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Mining & Mineral Resources
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Mechanical Engineering
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Structural Engineering
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Life Sciences & Earth Sciences
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General Life Sciences & Earth Sciences
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Geochemistry & Mineralogy
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FR1088438D1953-01-151953-10-08Procédé pour la mise en place d'étançons extensibles de mines et étançons extensibles pour la mise en oeuvre de ce procédé
ExpiredFR1088438A
(fr)