This project, part of the High Speed 2 (HS2) Development at Sublot 4, to divert approximately 260m of IP Gas main involved the construction of caisson shafts and an undertrack crossing (UTX) beneath the operational railway line into Birmingham to facilitate the diversion.
HB Tunnelling were tasked with designing and installing a pipe jack tunnel beneath the railway in difficult ground conditions.
The tunnel spanned approximately 108 meters in length featuring a 1.2m ID / 1.43m OD reinforced concrete pipe at a depth of 16 meters below ground level.
This lecture will explore the challenges, design considerations, 3rd party approval, and underground techniques used in this critical infrastructure project.
Following the lecture, there will be a networking session, with food and drinks at the ICE Kendal's bar sponsored by HB Tunnelling Ltd.