Multistage Tunnel Excavation and Support

Software

Version Notes:
FLAC 8.0

Level: Intermediate
Runs in Demo: No

Write Up
Walk Through
Project Files
Consulting Services

FLAC simulates the four excavation stages and three construction steps within each stage for a multistage tunnel excavation and construction. The convergence-confinement method is used to simulate the effect of the tunnel advance. A ground reaction curve is calculated to relate the effect of the advancing tunnel face to reduction in internal pressure within the excavated region. Both rockbolt support and a shotcrete liner are installed at different stages of the tunnel advance.

Keywords:

  • Multistage excavation
  • shallow tunnel
  • rockbolts
  • Shortcrete
  • Ground reaction curve
  • Mohr-Coulomb model

Materials:

  • Concrete
  • Rock
  • Steel

Analyses:

  • Static
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Upcoming Events
29 Apr
PFC In-Person Introductory Course
Live in-person introductory training course. This four-day course provides guidance in the use of the Itasca codes PFC2D and PFC3D to s... Read More
29 May
Getting Started with FLAC2D/FLAC3D
Objectives of the training: •Understand the FLAC2D/ FLAC3D numerical approach and the types ofproblems it can solve•Know how to manipul... Read More
5 Jun
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