![](https://itasca-int.objects.frb.io/assets/img/site/software/applied-examples/PressurizedTunnel_med.png)
Stress relaxation in rock after excavation of a circular water tunnel and installation of a liner is examined with FLAC. The liner is installed and pressurized instantaneously to permit the stress field to respond to radial strain in the liner.
Keywords:
- tunnel excavation
- stress relaxation
- liner
- Pore pressure
- effective stress analysis
- Mohr-Coulomb model
Materials:
- Clay
- Concrete
- Rock
Analyses:
- Fluid Flow
- Static