Correlation between the kinematics of a Tunnel Boring Machine and the observed soil displacements

Constructing tunnels in soft soil with the use of Tunnel Boring Machines (TBMs) may induce settlements. A considerable amount of the total soil displacements is correlated with the passage of the TBM-shield. Even so, the TBM-induced soil displacements are so far only coarsely correlated to the total settlements. This paper relates the shield...

On the effects of the TBM-shield body articulation on tunnelling in soft soil

When a Tunnel Boring Machine (TBM) is driven in soft soil, the TBM-shield constantly interacts with the surrounding soil profile excavated by the cutting wheel. The interaction pattern of shield-soil interface displacements determines compression and extension sectors in the surrounding soil. Soil compression is generated when the shield...

Tunnelling in Soft Soil: Tunnel Boring Machine Operation and Soil Response

Constructing tunnels in soft soil with the use of Tunnel Boring Machines may induce settlements including soil movements ahead of the face, soil relaxation into the tail void, possible heave due to grouting, long lasting consolidation processes, and potentially several other mechanisms. A considerable amount of the total soil displacements seems...

Tunnel-boring in soft soil: A study on the driving forces applied to a slurry-shield TBM

Tunnel-boring in soft soil: A study on the driving forces applied to a slurry-shield TBM