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Building Britain's first main-line railway for over a century—and one carrying trains at an unprecedented 300 km/h—required a completely new set of design standards for railway systems. This paper describes the signalling, trackwork and diverse range of other mechanical and electrical systems which, together with the rolling stock, make the tunnels, earthworks and structures of the second section of the Channel Tunnel Rail Link—now renamed High Speed 1—into a transport system. [ABSTRACT FROM AUTHOR]

The last stop before London on the Channel Tunnel Rail Link—now called High Speed 1—is Stratford International in the heart of the London 2012 Olympic park. This paper describes the design and construction of the station box, a 1 km long, and up to 55m wide and 26 m deep, open concrete structure. It initially served as the construction and portal site for four of the London tunnel drives on section 2 and now provides the location for the Stratford International station and major track junctions. Excavated material from both the tunnels and the box has been used to regenerate the old railway freight yards into a site for a major new development. [ABSTRACT FROM AUTHOR]

Section 2 of the Channel Tunnel Rail Link—now known as High Speed 1—included the construction of a new station for the existing Thameslink rail service under St Pancras International station. This paper describes the construction of the Thameslink box on the route of the existing tunnel along with a direct passenger interchange with the new international station. Two new tunnels were also constructed forming a potential connection to the existing East Coast main-line route. [ABSTRACT FROM AUTHOR]