New FAQ : QuestionHow does tunneling work in an unconsolidated soil type?
June 12, 2020How is the lining of the tunnel rated on seismic strength?
June 12, 2020The greatest ground motions in a seismic event would occur near the ground surface. At the depths of the TBM and tunnel, the structure would probably tend to move together with the surrounding ground and not be adversely affected by seismic forces.