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Old January 12th, 2014, 12:55 PM   #601
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Old January 26th, 2014, 11:34 AM   #602
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Full report from the construction of the metro from station Tsarigradsko Shosse to station Sofia Airport (explanations in Bulgarian only, ask here if You have some questions!)

You can see all photos HERE!

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Old January 26th, 2014, 10:34 PM   #603
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You can see all photos HERE!
Interesting, thanks. There is a picture showing the steel-rails for third rail ready to be put in place. They are signed with STR40. This is the german description for "Stromschiene 40 kg/m" (current-transmission-rail-profile). Didn´t knew that this thing went to be international. All german subways use this type. It´s datimg back from the former Reichsbahn which electrified Berlins S-Bahn in 1924 and didn´t change until today. I guess russian metros do use this too, as the thrid rail current-transmission in Moscow is exactly the same than Berlin S-/U-Bahn.

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Old January 27th, 2014, 01:44 AM   #604
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Our underground was based and designed in accordance with the russian system. Even the current CEO graduated in St. Petersburg.

And, as you may very well know, the russian underground is mainly based on the Berlin system, which they copied after the war.

Thanks to you, I learned a little more on the history of STR40, but today several companies produce this type of conductor rail, so I guess it's been a long time since it went international. This calls for some further research.
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Old January 27th, 2014, 02:43 AM   #605
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And, as you may very well know, the russian underground is mainly based on the Berlin system, which they copied after the war.
Huh? Moscow metro was quite massive by the end of WW2, and Russian metro systems are quite different from Berlin (deep-level vs shallow, large interstations vs small ones, etc.).
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Old January 27th, 2014, 09:13 PM   #606
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Huh? Moscow metro was quite massive by the end of WW2, and Russian metro systems are quite different from Berlin (deep-level vs shallow, large interstations vs small ones, etc.).
Moscow Metro started in 1935 running on first line with mainly shallow alignment. Construction method was the same as in Berlin, initiated by Siemens. Some deeper parts were build like London tube lines. Those have been the european systems the russians orientated first. Shortly after that russian engineers choose to have deeper tunnels because the Moscow soil is better for building tunnels in deeper layers (it was not only the story about necessary WWII-shelters). There have been some accidents first but they quickly made perfect deep-tunneling, avoiding any trouble at the surface.

The conductor-rail and the profile of Moscow-Metro is more or less the same like the historic C-Type rolling-stock of Berlin great profile, having a width of about 2,65-2,70 m and 18 m long cars. Current-collection is from the lower side of conductor-rail for safety reasons and suitable for winter. Actually Berlin cars are shorter now. After WWII some Berlin subway-cars went to Moscow and ran on the Fili-line until 1966/67. After that at least one car went to St. Petersburg as maintainance vehicle. This was possible, because Berlin and Moscow Metro are mainly similar. Of cause there are differences. Russian metros have 850 V DC, Berlin 750 V DC...

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Old February 16th, 2014, 12:03 PM   #607
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New photos between station 21 and station Sofia Airport (23). First photos from the tracks and platforms of station 22 and 23! Of course, the explanation is in Bulgarian, but I'm here if you have questions!

Last edited by difian; February 16th, 2014 at 12:19 PM.
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Old February 18th, 2014, 02:12 PM   #608
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...most beautiful metro stations i have seen !!!!
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Old February 18th, 2014, 02:18 PM   #609
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The last one looks a bit like a Barbie world...
...and looks like my countries government party participated on the colors ...but I just love the designs and works....congratulation Sophia, most beautiful metro stations I have seen!!!!!!
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Old February 18th, 2014, 03:22 PM   #610
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Originally Posted by mariharol View Post
...most beautiful metro stations i have seen !!!!
With all due respect to the Bulgarian friends, but REALLY?!
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Old February 18th, 2014, 04:56 PM   #611
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Of course no, but everyone has a different taste
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Old February 23rd, 2014, 02:30 PM   #612
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Progress on Line 1 thanks to kraxx


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Old February 23rd, 2014, 02:31 PM   #613
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Old February 23rd, 2014, 02:34 PM   #614
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The other extension towards the airport























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Old February 23rd, 2014, 02:38 PM   #615
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Old February 23rd, 2014, 02:41 PM   #616
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Old February 23rd, 2014, 02:43 PM   #617
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At the airport











[IMG]http://i57.************/vgod47.jpg[/IMG]

[IMG]http://i60.************/21l2z4h.jpg[/IMG]

[IMG]http://i61.************/f57w8y.jpg[/IMG]
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Old February 23rd, 2014, 02:44 PM   #618
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Some details, thanks to bojo6666









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Old February 26th, 2014, 06:48 AM   #619
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Can not wait for the airport extension to open!
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Old March 12th, 2014, 02:41 PM   #620
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Line 2 extension with one station has been signed.

Quote:
Bulgarian-Czech tie-up wins deal to expand Sofia subway

The state-owned operator of the Sofia subway system, Metropolitan AD, has signed an agreement with Bulgarian-Czech tie-up Metro Cherni Vrah 2013 to build a new 1.3 kilometer mainline, Metropolitan said on Tuesday.

Construction works on the subway line connecting the James Bourchier boulevard with the Hladilnika residential district can begin after a building permit is issued which is expected to happen by the end of March, a Metropolitan spokesperson told SeeNews over the phone.

The construction works are expected to take 22 months.

The consortium consists of Bulgarian builders Stanilov and GP Group and Czech partner Metroprojekt Praha.

Last year, local media reported that Metro Cherni Vrah 2013 had filed the lowest bid of 42.35 million levs ($30 million/21.7 million euro) for the project. The subway expansion project is co-financed by EU funds.
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