The interaction between the ground and tunnel behaviors is not clear, because the mechanism is very complicated. We measured the earth pressure, water pressure and sectional force acting on the tunnel lining at an in-situ slurry shield driven tunnel in diluvium deposit. Then, we investigated a design load on the tunnel lining.
The overburden at the measured point is about 19 m. Segments, 350 mm in height and 1,000 mm in width, are of the corrugate type made of ductile cast iron.