136053 ⎘
Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings , e.g. by assembling; Lining predominantly with metal; Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches Supporting means for arch members, not provided for in
Inflatable folding tunnel reinforcement structure and construction method thereof
#2Method of treating tunnel collapse with roof-contacted shield support
#3Reinforcement system for the concrete lining of the inner shell of a tunnel construction
#4High-strength confined concrete support system for underground tunnel
#5Underground mining rib support system and method