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1 Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

1 2003

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Tunnelling in changing geology

Herrenknecht M., Ulrich R., Liebler B.

Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

2003

Vol. 291, z. 4

523-533

Mechanized tunnelling meanwhile covers almost all geological areas of application and offers an environmentally friendly tunnelling process. Considered to be the greatest challenges are projects consisting of mixed geologies, of high-strength abrasive hard rock, as well as unstable loose rock with clogging tendencies and high groundwater pressure. This requires a regular and professional maintenance concept for all tunnelling components participating directly and indirectly as well as an efficient construction operation for the support of the tunnel boring machine. Paris, Singapore, Porto and St. Gotthard / Switzerland are only some examples, where - through intensive technical support from the side of the TBM supplier - mechanized tunnelling is managed in extremely difficult geological and hydrological conditions. As heterogeneous as local conditions may be, the technology must be as flexible to have the ability to react to existing challenges. There is no general valid ready-made solution for the management of difficult ground conditions. That is the reason why constructive cooperation of all parties involved in the project must be the basis for a successful project completion.