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E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D20/00—Setting anchoring-bolts
E21D20/02—Setting anchoring-bolts with provisions for grouting
E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
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Mining & Mineral Resources
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Structural Engineering
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Piles And Underground Anchors
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FR1184766D1956-10-151957-10-14Procédé pour sceller un boulon d'ancrage en roche et dispositif pour la mise en oeuvre dudit procédé
ExpiredFR1184766A
(fr)