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Old February 9th, 2015, 10:03 AM   #941
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142 m in the east tube, 108 in the west tube. As of Friday 6 Feb.

I'll post how I've worked this out if anyone wants to know.

Last edited by StuZealand; February 9th, 2015 at 10:11 AM. Reason: date typo
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Old February 9th, 2015, 04:54 PM   #942
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Can someone post a map showing where all these proposed new tunnels are in relation to the ones under construction? The links aren't very helpful for me.
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Old February 11th, 2015, 03:48 AM   #943
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Quote:
Originally Posted by 00Zy99 View Post
Can someone post a map showing where all these proposed new tunnels are in relation to the ones under construction? The links aren't very helpful for me.
If you check this map


then the possible continuations are the following (not drawn):

North of the Gotthard Base Tunnel there could be a tunnel along the shore of Lake Lucerne up to Lake Zug (northeast of the letter n of Luzern). Not very urgent imho.

In the south, there are still some gradients which are a problem for heavy trains with a single loco. Two main solutions exist:

Solution 1 is a tunnel with to tracks south of Lugano to Chiasso, eliminating the remaining (not very steep) gradients, also saving some travel time to Milano.

Solution 2 is single track tunnel going southwest of the north portal of the Ceneri base tunnel going to the Lago Maggiore. Single track is enough because along the east shore of Lago Maggiore there already exists a flat single track line that connects to the north portal of the Ceneri Base tunnel. This line would probably be freight only.

But it's almost certain that those continuations will not happen in the next 15 years. Their extra capacity won't be needed until then and funds aren't unlimited...
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Old February 13th, 2015, 08:28 PM   #944
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Quote:
Originally Posted by StuZealand View Post
I'll post how I've worked this out if anyone wants to know.
Sure, thank you (I'm more interested to the northern heading, the southern one being nearing completion now)

Quote:
Originally Posted by 00Zy99 View Post
Can someone post a map showing where all these proposed new tunnels are in relation to the ones under construction? The links aren't very helpful for me.
I can't find how to link it directly, but try this: http://map.geo.admin.ch/

Then:
*EN or any other language (if it isn't selected automatically), then, on the left...
*geocatalog
*change topic
*sectoral plans
* SP Infrastruktur Schiene (SIS)
* SIS in Kraft

All railway projects not already under construction will be shown in the main map.

(I will edit this post if I manage to create a direct link)
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Old February 14th, 2015, 12:00 AM   #945
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Quote:
Originally Posted by Coccodrillo View Post
Sure, thank you (I'm more interested to the northern heading, the southern one being nearing completion now)
Ok, I'll do both, starting with the South:

Vezia portal (East):
km 242.946
Status of the work

Minus 339 metres inward drive from Vezia = 242.607

Minus 223 metres overground tunnel Vezia = 242.384
Project data Ceneri raw construction

Minus the weekly update (currently at km 242.242 as at 6 Feb 2015)
242.384 - 242.242 = 142 metres remaining
Southbound pdf


Vezia portal (West):
km 242.800

Minus 303 metres inward drive from Vezia = 242.497

Minus 188 metres overground tunnel Vezia = 242.309

Minus the weekly update (currently at km 342.201 as at 6 Feb 2015)

(changed to 242.201 as the extra 100 km figure is only used inside the tunnel for some reason and not at the two western portal ends)
242.309 - 242.201 = 108 metres remaining


Vigana portal (East):
km 227.494

Plus 766 metres inward drive from Vigana = 228.260

Minus the weekly update (currently at km 230.434 as at 6 Feb 2015)
Northbound pdf

230.434 - 228.260 = 2174 metres remaining


Vigana portal (West):
km 227.511

Plus 749 metres inward drive from Vigana = 228.260
(Must have been deliberately excavated to this distance to match the East tube)

Minus the weekly update (currently at km 330.021 as at 6 Feb 2015)

(changed to 230.021 as the extra 100 km figure is only used inside the tunnel for some reason and not at the two western portal ends)

230.021 - 228.260 = 1761 metres remaining

Note that the north west heading is currently 413 metres futher advanced than the north east heading.
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Old February 22nd, 2015, 11:43 PM   #946
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The GBT has been planned for decades. A lot of old documents, starting from 1963, can be found on these web pages (they have nearly identical URLs, but they are dfiferent):

http://www.alexandria.admin.ch/alptransit.htm

http://www.alexandria.admin.ch/alptransit.html

I don't know what's the maintainer of this website.

admin.ch is the government's official website, but http://www.alexandria.admin.ch/ doesn't have an homepage, I just found these isolated pages.

Most of documents are in German but none in English, however on http://www.alexandria.admin.ch/KOP%2037057.pdf (17 MB) you can see some maps of the planned alternatives.

The so-called KEA report (Kommission ... Eisenbahntunnel durch die Alpen = commission for a transalpine tunnel, http://www.alexandria.admin.ch/AT3.htm) can be considered the first serious proposal of the GBT, presented exactly 45 years before its opening.

During that time transalpine traffic incredibly increased. I have found detailed statistics from 1984 on, but not before. However, these are already clear. Here the numbers for all passes between Ventimiglia and Tarivsio included (millions of net tonnes):
1984: rail 32.5 - road 35.7 - total 68.2
2012: rail 45.7 - road 95.9 - total 141.7
Traffic has doubled in 18 years, as I said I haven't found detailed statistics for years before 1984, however it is realistic to think that traffic was half of those of 1984.
(one might wonder if it is really necessary to transprot all these things...)

Many alternatives have been studied and, before the decision to built the Gotthard road tunnel (approved in 1969, opened in 1980), a shuttle system similar to the one later implemented through the Eurotunnel was also evaluated.
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Old February 23rd, 2015, 02:39 AM   #947
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How far along is the track and catenary installation in the tunnels?
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Old February 23rd, 2015, 03:08 AM   #948
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Quote:
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How far along is the track and catenary installation in the tunnels?
Track is 100% installed.

Status of work, 1 Feb 2015
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Old February 23rd, 2015, 03:17 AM   #949
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Why is the Catenary not being powered at 25kv?
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Old February 23rd, 2015, 03:34 AM   #950
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Quote:
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Why is the Catenary not being powered at 25kv?
Because Switzerland is powered at 15kV, 16,7Hz (and so are Germany and Austria).



Orange: 750 V DC third rail
Light Red: 1500V DC
Yellow: 3000V DC
Light blue: 15000V, 16,5Hz AC
Green: 25000V, 50Hz AC
Grey: no electrified tracks

On top of that, Italy, Spain, France, Belgium, Netherlands, United Kingdom all have high-speed tracks electrified at 25kV, 50Hz AC.
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Old March 2nd, 2015, 01:51 PM   #951
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Only 34 metres left to excavate in the West tube of the Ceneri Base Tunnel as at Friday 27 Feb.

South bound

This will break through in less than two weeks.

(Still 81 m to go in the East.)
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Old March 6th, 2015, 05:49 PM   #952
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Quote:
Originally Posted by StuZealand View Post
This will break through in less than two weeks. (Still 81 m to go in the East.)
Breakthrough: 17.03.2015, according to the monthly update published today (Alptransit).
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Old March 7th, 2015, 09:05 AM   #953
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Quote:
Originally Posted by Luganese1980 View Post
Breakthrough: 17.03.2015, according to the monthly update published today (Alptransit).
Yeah, I see they've finally announced an official break through date. I assumed in my post above that it would be slightly earlier, based on the typical weekly progress.

When the first of the GBT break throughs was announced, the excavation was done to the last 1.8 metres before waiting a few weeks (I think it was) for the date of the break through ceremony.

While this one isn't as significant, I expect they'll still have some kind of ceremony for it.
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Old March 8th, 2015, 12:41 AM   #954
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Originally Posted by StuZealand View Post
While this one isn't as significant, I expect they'll still have some kind of ceremony for it.
I think and hope so !
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Old March 10th, 2015, 12:40 AM   #955
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I think and hope so !
According to the local media, the breakthrough will take place at about 11:15, and there will be the usual official speeches, media coverage etc. Like on 15 October 2010 (GBT), but on a much smaller scale.
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Old March 10th, 2015, 03:19 AM   #956
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Good to hear. At last count, there is but 10 metres left to excavate!
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Old March 10th, 2015, 07:02 AM   #957
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Originally Posted by StuZealand View Post
Good to hear. At last count, there is but 10 metres left to excavate!
The final countdown...
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Old March 16th, 2015, 11:59 AM   #958
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Wow! Only two metres to excavate in the west tube as of Friday 13th. The last blasts will occur this Tuesday.

The east tube has another 36 metres to go, so probably two weeks away from complete excavation.

Friday the 13th

Once broken through, I assume that having these two openings to the south will improve ventilation throughout the tunnel worksite.
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Last edited by StuZealand; March 16th, 2015 at 12:08 PM.
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Old March 17th, 2015, 05:03 PM   #959
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And we have breakthrough!

Breakthrough in the west tube between Sigirino and Vezia

At 12pm local time.
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Old March 17th, 2015, 05:09 PM   #960
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