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Publication of JPS6126800UpublicationCriticalpatent/JPS6126800U/ja
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Publication of JPH0415837Y2publicationCriticalpatent/JPH0415837Y2/ja
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
E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
E—FIXED CONSTRUCTIONS
E21—EARTH OR ROCK DRILLING; MINING
E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS