2020年9月17日 · The Chiltern Tunnel will be the longest tunnel on Phase One of High Speed Two (HS2). As part of the safety systems it is necessary to be able to provide forced ventilation for …

This factsheet sets out the need for shafts along tunnels and porous portals on the Proposed Scheme. It also describes design principles that are expected to be used

2020年9月22日 · This paper describes the design journey for the six ventilation shafts in the section south of the HS2 Phase One in the Euston and Northolt tunnels and shows how the …

Three of the tunnels on the HS2 route require shafts. These are the Euston, Northolt and Chiltern tunnels. The shaft locations have been based on the above spacing requirements, access to …

2019年6月19日 · Sets out the need for shafts along tunnels and porous portals on the Proposed Scheme.

2024年9月10日 · The Chesham Road Intervention Shaft is one of five shafts being constructed as part of the Chiltern Tunnel. It’s located off the B485 at Hyde End, near Great Missenden, and …

2024年9月10日 · Amersham Headhouse and Ventilation Shaft is one of five structures that will be built to provide ventilation and emergency access to Chiltern Tunnel, which is the longest …

2020年9月17日 · The Chalfont St Peter Ventilation Shaft is part of the central section of High Speed Two (HS2) Phase One – Lot C1 – which includes the Colne Valley Viaduct and Chiltern …

2021年7月22日 · Engineers have begun excavating the 78m (255ft) deep shaft near Chalfont St Peter in Buckinghamshire. Two giant tunnelling machines will construct the tunnels under the …

2025年2月17日 · The local community engagement team and the HS2 Helpdesk will still be available to answer your questions. Slide 1 of 3: Birds eye view of the Canterbury Works …