Geothermal Tunnel Lining Conference
Friday 19 October 2012
Tunnelling and Underground Construction Academy
Lugg Approach, Ilford E12 5LN


REHAU, a GSHPA member, is organising a seminar on Tunnel Lining at the Tunnelling and Underground Construction Academy.

Heat is an increasingly valuable resource, as energy prices continue to rise. Part of the solution may be under our feet. Urban railways are a significant source of heat. We already extract ground source energy from building foundations and structural piles, so why not from tunnels? This joint Crossrail, Arup & REHAU conference explores some of the issues and experience of using geothermal tunnel lining.

Tunnel Lining

What is geothermal tunnel lining?

By incorporating absorber pipes into pre-fabricated tunnel segments, it is possible to change the tunnel lining into an energy extraction system. Energy is collected from the surrounding soil and excess heat from inside the tunnel (e.g. rail, sewer or service tunnel). Typical energy extraction ranges from 10-30W per square metre of tunnel surface. This extracted energy can be used to heat buildings above ground. By incorporating this technology in the tunnel design, it can be more cost effective than traditional ground-source energy systems, such as ground-source probes or energy piles. It can also play a significant role in providing tunnel cooling. By embracing this technology in the tunnel design, you are helping to future proof the infrastructure.


10.00 Registration & Coffee
10.20 Introduction & Welcome
10.30 Delivering a sustainable Crossrail Mike de Silva
11.00 Principles of Geothermal Tunnel Lining       Duncan Nicholson
11.30 Coffee
11.45 Geothermal Tunnel Lining projects from across the globe                 Ralf Winterling
12.15 Cooling urban railways Mark Gilbey
12.45 Q&A
Lunch and opportunity to tour the Crossrail Tunnelling Academy.  

Please book a place, for which there is no charge, with Jayne Blackborow, Rehau 020 7580 6155.