Brisbane’s Cross River Rail Project, Assessment of Cavern and Shaft Interaction for Albert Street Station

DOI

10.2991/978-94-6463-900-1_23How to use a DOI?

Keywords

shaft-cavern interaction; pillar stability; prop load assessment

Abstract

The Albert Street Station which is one the four underground stations for Brisbane’s Cross River Rail project comprises two entry shafts and an underground cavern. The main entry to Albert Street Station is a 50m deep shaft box adjacent to a 23m wide underground cavern. The two excavations are separated by a 6m wide rock pillar which is intercepted by a low-angle fault. This paper presents 2D and 3D numerical analyses undertaken to assess stability of both the shaft and cavern excavations by taking into account the complex interaction between the cavern, adits and shaft excavations. Results from these analyses were used to provide inputs into the design of the temporary support for the shaft and cavern excavation including propping and rock pillar stitching requirements. Additional analyses were also undertaken to consider impacts of changes in construction methodology and sequencing. Results of these analyses were used to identify risks associated with the proposed changes and provide inputs to the decision making by the construction team.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Michael Habte
AU  - Adrian Smith
PY  - 2025
DA  - 2025/12/07
TI  - Brisbane’s Cross River Rail Project, Assessment of Cavern and Shaft Interaction for Albert Street Station
BT  - Proceedings of the Rocscience International Conference 2025 (RIC 2025)
PB  - Atlantis Press
SP  - 243
EP  - 249
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-900-1_23
DO  - 10.2991/978-94-6463-900-1_23
ID  - Habte2025
ER  -