Modelling of Interaction between tunnel in sandy media

The fault ruptures propagate in the soil layers and interact with subsurface and surface structures. When the fault ruptures emerge at or adjacent to the position of existing tunnels, significant damage to the tunnels can occur. The objective of this paper is to study the interaction of an embedded tunnel within a soil layer, while normal faulting imposes soil deformations. The centrifuge modeling under ۸۰-g acceleration was conducted to investigate the pattern of rupture propagation for different relative tunnel positions. The tunnel diverts the rupture path to its both sides. The change in the location of the fault rupture planes, the vertical displacement of the ground surface with the presence of tunnel and also the effect of tunnel rigidity and soil density on fault tunnel interaction, for the first time, were reported and discussed in this study.

Keywords:

Fault Rupture , Tunnel , Sand , Interaction.