Channel Tunnel Rail Link (Supplementary Provisions) Act 2008 is to say, 22 May 2008) on which the Act was passed (that is to say, received royal assent) is included in the period of two months. This means that the Act came into force on 22 July 2008. Channel Tunnel Rail Link (Supplementary Provisions) Act 2008 The Channel Tunnel Rail Link (Supplementary Provisions) Act 2008 (c. 5) is an Act of the Parliament of the United Kingdom which amends the Channel Tunnel Rail Link Act 1996. Its principal provision is to allow the Office of Rail Regulation to charge the operator of the Channel Tunnel Rail Link "a fee
Channel Tunnel techniques from the oil industry were employed. Tunnelling was a major engineering challenge, with the only precedent being the undersea Seikan Tunnel in Japan, which opened in 1988. A serious risk with underwater tunnels is major water inflow due to the pressure from the sea above, under weak ground conditions. The tunnel also had the challenge of time: being privately funded, early financial return was paramount. The objective was to construct two rail tunnels, apart, in length; a service tunnel between the two main ones; pairs of cross-passages linking the rail tunnels to the service one at spacing; piston relief