Stresses Around a Pressurized Concrete Tunnel

Software

Version Notes:
FLAC 8.0

Level: Intermediate
Runs in Demo: Yes

Write Up
Walk Through
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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
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