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Ontario Line Cavern (Final lining (Water pressure, K0, Swelling potential,…
Ontario Line Cavern
Final lining
Water pressure
K0
Swelling potential
Min thickness
Slab?
Geometry
Clearances
Bored tunnels
VDE
Systems/FLS
Ventilation (Sf)
Architecture clearances
Similar to RCTC?
Pantograph / 3rd rail
Enwave
ROW
Temporary easement for rockbolts?
Height/width ratio
Initial lining
Shotcrete
Rockbolts
Presupport
Drift configuration
Settlement assessment
Volume Loss
Zone of influence
Sensitivity of existing structures
Age / foundation type / depth / historic
Utilities
Technical literature review
Cavern Size
Initial support
Shotcrete th
ROckbolts
Ground treatment
Drift config
Ground treatment
Settlement
Modeling
PLAXIS
Actual geometry
Drfit configuration
RocSupport
Limitations
Perfect circle
No K0
No actual rockbolt length
Hydrostatic load assumption
Plastic zone - Rockbolt length
Sensitivity analysis
Support alternatives
Round length
PLAXIS check
Metrolinx
Design Manual?
Technical Requirements?
Geotech parameters
Georgian Bay Shale
Sources
Thurber
Eglinton
Papers
Relief Line
Sweling potential
K0
Methane
GSI/RMR
Hoek Brown
Permeability?
Ground treatment?
Variability?
Drawings
Section types
PSOS