FR1168428A - Perfectionnements apportés aux soutènements à ancrages, en particulier pour galeries d'abattages dans l'exploitation des mines de houille
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Perfectionnements apportés aux soutènements à ancrages, en particulier pour galeries d'abattages dans l'exploitation des mines de houille
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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
E21D11/006—Lining anchored in the rock
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FR1168428D1956-01-251957-01-15Perfectionnements apportés aux soutènements à ancrages, en particulier pour galeries d'abattages dans l'exploitation des mines de houille
ExpiredFR1168428A
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Perfectionnements apportés aux dispositifs de soutènement auxiliaires qui suivent les travaux d'abattage dans des galeries, plus spécialement des couloirs de mines