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
E21D11/183—Supporting means for arch members, not provided for in E21D11/22
Dispositif de fixation et de maintien en tension d'au moins une feuille souple, feuilles en materiau souple equipees d'au moins un element selon ce dispositif et installations mettant en óoeuvre au moins une feuille.