Cut and cover construction of subway with utility chamber...

Cut and cover construction of subway with utility chamber...

Cutter for tunnel boring machine

Cutter structure for shield machine

Cutterhead for a rock cutting machine

Cutting head for drift advancing machines

Cutting ring for disk rolls of partial and/or full cutting...

Deformable tunnel

Detachable anchor bolt mixing head for use in mine roof...

Device and method for installing a rock bolt and a rock bolt...

Device for a rock wall

Device for coating tunnel walls

Device for connecting a supply pipe to the inner channel of...

Device for consecutively supporting a drift

Device for erecting a segmented tunnel wall lining

Device for erection of pressed monolithic lining in...

Device for generating high-speed pulsed liquid jets at high...

Device for joining two concrete members together

Device for opening and supporting a headway

Device for provisionally consolidating a gallery and...