it requires the construction of a very complicated and in working from two directions (French and English.) Overall length of this tunnel is 50.45 km and 39 km between are under water. Bener bener amazing! To cover the distance of this tunnel only takes 20 minutes by speed train tunnel tinggi.Ide beginning of creation and linking English - French was already there since two centuries ago in realized only recently have in 1987. The point of building this tunnel is a Calais in France dab Folkestone in England. His own workmanship involving 15,000 people who carried out continuously from both ends (the construction of tunnels and bridges are using the development technique of two-way). Digging tunnels also use very large equipment that is Tunnel Boring Machine (TBM), which has 76.2 power drill and has a combination function of heavy equipment such as drilling machine and the machine scraper. Nearly 4 million m³ of chalk were excavated in the UK and overall soil dredged some 8 million m³ with an average speed 2400ton per hour. Another advantage of using this machine is not disturbing the surrounding conditions and can produce a smooth tunnel wall. Channel Tunnel pick the 3 lanes in the tunnel that is used for passing trains, two of them having an diameter of 7.6 meter and a small tunnel for maintenence or emergency purposes. in an emergency. The depth of the tunnel varies from 45 meters to 75 meters below sea level. Channel Tunnel is operated by Eurotunnel plc. Chunnel - which the Chunnel is the short of The Channel Tunnel, huge cost of this project originally started with some errors, and finally completed in 1994. Some time ago this tunnel had experienced fire for 20 hours which is caused by a freight train, tunnel fires caused temperatures reaching 1000 degrees Celsius. Every day 40,000 people across this tunnel.