Interesting links to websites related to underground structures
Tunnel (word in Wikipedia)
CZECH TUNELLING ASSOCIATION ITA-AITES
The world’s longest tunnels
The world’s longest railway tunnels
The world’s longest road tunnels
The world’s longest underwater tunnels
The world’s longest navigation tunnels
Underground railways in the world (Urban Rail.Net)
Road tunnels in the U.K.
Boat tunnels in France
Underground bases, tunnels, professional societies, methods, history (very extensive database)
Lötschberg – base tunnel
Osa BLS (Bern – Lötschberg – Simplon)
Gotthard – base tunnel (Switzerland)
Eurotunnel (Channel Tunnel)
Mont Blanc motorway and tunnel (France – Italy)
N.Y. Lincoln Tunnel
N.Y. Steinway Tunnels
N.Y. Holland Tunnel
Mosty a tunely v N.Y.
Chicago Rail Tunnels (history of the 62-mile circular traffic tunnel system, USA)
Detroit – Windsor tunnel (Michigan, USA – Ontario, Canada)
Metro and urban underground floor in Montreal (Canada)
Metro in Moscow and the Russian Federation
London Underground
Rudolph Tunnel
Vyšehrad Tunnel in Prague
Tunnels in Prague
Prague Metro
VMO Brno – Dobrovsky Tunnel (about this and other projects, visualization)
Brno city underground (official site about the city)
Brno city underground (amateur site about the city)
SUBTERRA a.s. Praha
Metrostav a.s. Praha
OHL ŽS Brno a.s.
INTERRA – Jaroslav Šťavíček Brno
GEOtest Brno a.s.
SG Geotechnika Praha a.s.
SUDOP Brno
Zakládání Group a.s. Praha (website of Czech companies involved in underground constructioni)
ELTODO dopravní systémy Praha (security, signalling, control in underground construction)
AMBERG Group (consulting, design and implementation group; mainly for underground construction, Switzerland)
TBM (tunnel boring machine site)
Lovat (company producing TBMs and special shields)
Herrenknecht (company producing TBMs and special shields)
Robbins (TBM and special shield company)
Heintzmann (Reinforcement of underground and mining structures)
ATLAS COPCO (Anchors and anchoring)
Ankra (Mining and tunneling equipment)
MINOVA Bohemia (Materials and equipment for underground construction, mining and special foundations)