Forcing
70 K prescribed wall ramp over 90 days.
Coupled tunnel-ground responseReal solver outputApplication case 03 · Underground systems
Tunnelling & Underground Infrastructure
When heat, water and stress act together underground
Terra examines coupled thermal, hydraulic and mechanical response around tunnels and underground structures. The recorded N-01 demonstration begins with a generic tunnel section subjected to a 90-day wall-heating history.
Coupled lifecycle
Follow the system as conditions change
Underground response evolves as excavation, groundwater, support and operational loads change the boundary conditions. Each stage calls for its own case definition and evidence.
Construct
Excavation sequence, ground movement, support timing and lining interaction.
Manage water and temperature
Seepage, pore pressure, drainage, geothermal gradients and prescribed thermal loads.
Operate under changing conditions
Energy exchange, thermal cycling and specialist operational boundary conditions.
Extend service life
Creep, swelling, deterioration, rehabilitation and long-horizon underground facilities.
These are modelling questions, not completed case claims. The recorded evidence below is limited to N-01.
Recorded evidence, bounded to N-01
One recorded case within a broader lifecycle
N-01 is a prescribed, generic tunnel-heating demonstration. It does not stand in for every construction, operational or long-service underground case.
Recorded case N-01 · 2-D THM demonstration
One heat load. Four coordinated views.
A quarter-symmetry tunnel section with a prescribed 20 to 90 °C wall ramp, replayed across 39 recorded solver states over 90 days.
STATE 39 / 39 · DAY 90 days · fixed scales
39 recorded states · no temporal interpolation
- Prescribed wall ramp
- 20 → 90 °C
- Modelled duration
- 90 days
- Stored solver output
- 39 states
- Demonstrated scope
- 2-D plane strain
Recorded solver output · generic material set · not repository validation
Interpretation
Read the record in order.
Formulation
Temperature, flow and deformation in one solve, with liquid pressure and displacement recorded as coupled responses.
Recorded response
Peak thermal overpressure +2.068 kPa and maximum in-plane displacement 1.460 mm. Displacement is not plotted in the four-view plate.
Limitation
Generic template material set, no repository-specific or site calibration.
Bring an underground case
Which coupled process governs your tunnel?
Share the geometry, ground profile, groundwater regime, construction sequence and thermal or operational history governing your project.