Alun Thomas
Alun is a tunnelling engineer with broad experience of many types of tunnelling methods, from immersed tubes to segmental linings, from closed face tunnel boring machines (TBMs) to hand excavation under compressed air.
He is a specialist in sprayed concrete lined (SCL/NATM) tunnels and his book on this subject has been translated into Chinese and Turkish. He has been involved in promoting the use of permanent sprayed concrete, fibre reinforcement and spray-applied waterproof membranes.
Over the last 25 years he has been involved in many of the recent major UK tunnelling projects such as the Jubilee Line Extension, Heathrow Express, Terminal 5 and Crossrail, as well as working on design and construction of tunnels internationally.
Alun is active in many industry bodies and he is Vice Animateur for the ITA Working Group 12 – Sprayed concrete. He founded All2plan in 2019 to offer design services, tunnelling expertise and advice on sustainability to projects worldwide.