Channel Tunnel The project was abandoned in May 1882, owing to British political and press campaigns asserting that a tunnel would compromise Britain's national defences. These early works were encountered more than a century later during the TML project. A 1907 film, "Tunnelling the English Channel" by pioneer filmmaker Georges Méliès, depicts King Edward VII and President Armand Fallières dreaming of building a tunnel under the English Channel. In 1919, during the Paris Peace Conference, the British prime minister, David Lloyd George, repeatedly brought up the idea of a Channel tunnel as a way of reassuring France about British willingness to defend
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