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Eurotunnel ventilation system

* Source: “Engineering the channel Tunnel”

Underground Site Of Eurotunnel (Photo Source: Eurotunnel)

*Marine rail tunnel north TBM in UK crossover cavern.

※ Movement of marine rail tunnel north TBM through UK crossover cavern.

※ Folkestone Terminal, aerial view.

*Breakthrough of Marine rail tunnel north TBM in UK.

* Muck train at rear of TBM in UK land running tunnel.

*Shakespeare Cliff site in operation

Inside Le Shuttle

* Source: “Engineering the channel Tunnel”

*Vehicle limits in Le Shuttle

Comparison of Shinkansen and France/TGV




Body width

3.4m (conventional width 3.0m = smaller building limit)

Allowable axle load


Electrification method

Single-phase AC 25KV, 60Hz
(Since the electric power system east of Fujikawa is 50Hz, it is converted to 60Hz using a frequency converter) All Shinkansen trains are connected at Tokyo Station. However, due to differences in the electrification method, the line does not connect Tokaido with Tohoku/Joetsu, and the platform has two tracks per side, handling trains from the Tohoku/Joetsu Shinkansen.

For trains only

・Reduced load on track boards and bridges
・Simplified track wiring at stations and depots

traffic light

Systematization of all train operations
・Development of Automatic Train Control (ATC)
・Adoption of Centralized Train Control (CTC)
(Train position is grasped from the central control room, station turnouts are also remotely controlled from the control room)

euro tunnel



Electrification method

Single phase AC 25KV, 50Hz overhead line type


・Forkst 132KV
・Fletton 225KV

feeder line

within the work tunnel
Installation of a feeding section at the tunnel entrance and center (When either substation goes down, it is extended from the other substation and fed. In this case, the train speed is reduced and (reducing the load on substations)

The electric system is a 3-electric system that covers all the electrification methods of the railways that are in service. SNCF and submarine tunnel AC 25KV, 50Hz, SNCB DC 3KV, and BR DC 750V third rail (these are switched during running).

・For access to conventional lines: 2 electric types (AC 25KV, 50Hz and 1,500V)
・For access to Switzerland: 3 electric types (AC 25KV, 50Hz AC 15KV, 16Hz, and DC 1,500V)
・For access to Belgium: 3 Electric type (AC 25KV, 50Hz DC 1,500V, and 3,000V)

Signal system

・Adopts the same TVN430 as the TGV-Northern Europe Line
・Train route control is computer controlled, except in emergencies
・Number of trains that can be operated is 20 trains per hour each way

Body width

2.8m (applies the vehicle limit of the smallest BR)


Induction motor drive controlled by VVVF inverter using GTO
(a moving bogie is also installed on the passenger bogie next to the locomotive)
(locomotive mass 68t, axle load 17t)

traffic environment

The area of ​​France is 1.6 times that of Japan, of which about 80% is in the plains, and half the population, so the population density in the plains is about 1/13 (almost the same as Hokkaido)

  • Nagoya investigation site of Japan-Korea tunnel

  • Overview of the Japan-Korea tunnel

  • project


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