Tweet Share

• Send by email

  Send by email

  

  Challenges in the Lowering of Victorian Railway Tunnels Invert

  The Edinburgh-Glasgow Improvement Programme involved a significant upgrade to Scotland’s rail infrastructure, to increase capacity and electrify the main line between Edinburgh and Glasgow. The improvements included the refurbishment and electrification of two Victorian brick lined tunnels - Queen Street Tunnel (QST) and Winchburgh Tunnel (WT). The works planned included the removal of the existing rail lines and ballast (at WT), and the existing track slab (at QST) and replacement with precast concrete track slab systems, fitting of new drainage and installation of overhead line equipment. This required the inverts of the tunnels to be lowered, so as to increase the vertical clearance and to ensure that the proposed track formation level was within competent rock, capable of withstanding the design vertical and horizontal loads. This paper focuses on the geotechnical design and construction of the new track slabs, including the mapping and rock mass characterisation of the invert excavations.

  Recipient :

  Name ^* :

  E-mail address ^* :

  ^* Required fields

  Send   or  Cancel

• Print