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Project I am aware of all this as my wifes Uncle was
brought in when they made the tunnels and worked on how to get
to get the trains through faster.
also i know they can use diesel trains though the tunnels
due to the different air flows/pressures in the different
tunnels.
Regarding tracks through the service tunnels when I was there
during finishing of the tunnel there was talk of using the
works trains they had for the working crews but obviously
they have not, but Dam long walk/drive through the tunnel.
Given there was no power whatsoever on the trains the failure was not as simple as the drive motors failing . . . the main power converters (of which there are 4 on a Eurostar - 2 at each end) must all have been disabled . . .
I suspect 'snow in the engines' is the media's take on the problem . . . 😉
I worked on Eurostar power electronics/software/control systems for 4 years, from static testing in the UK and France to extended field testing in France . . . never went through the tunnel in one tho' . . .
Probably imagrants breaking into the power supply
to get into the tunnels.
Very strange to have no lighting when there is emergency lighting.
very strange indeed.
I think it is all because we had the "wrong type of snow"
PR bloke said it was the "French snow" that ****ed the trains.
Plus whatever his name is looks as though he has a drink problem not that that has anything to do with it but it is nice to see someone suffer whilst others are worse off. 😀