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BOCHUMER GES fur GRUBENAUSBAU
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BOCHUMER GES fur GRUBENAUSBAU
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Application filed by BOCHUMER GES fur GRUBENAUSBAUfiledCriticalBOCHUMER GES fur GRUBENAUSBAU
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Publication of FR1174140ApublicationCriticalpatent/FR1174140A/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
E21D11/14—Lining predominantly with metal
E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
E21D11/20—Special cross- sections, e.g. corrugated
FR1174140D1956-04-101957-04-08Perfectionnements apportés aux cadres de soutènement, en acier, pour galeries ou couloirs de mines
ExpiredFR1174140A
(fr)