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Old July 2nd, 2013, 08:39 PM   #41
Coccodrillo
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I'm sorry, I was thinking of the Koralm Tunnel, but didn't specify it...
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Old July 2nd, 2013, 11:27 PM   #42
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Couldn't find one, sorry.
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Old July 20th, 2013, 05:36 PM   #43
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Some recent (today ~15h45) photos of the Semmering base tunnel construction site at Gloggnitz:












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Old October 5th, 2013, 05:06 PM   #44
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2,3 km long contract section 1 (KAT 1) of the Koralm Tunnel is done, while the 2 TBMs at KAT 2 are digging up to 40 meters per day. So far the southern tube is 8,8 km long and the northern 6,7 km. Constructions at KAT 3 are about to start soon as well.

http://www.kleinezeitung.at/steierma...s-fertig.story



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Old December 12th, 2013, 10:01 PM   #45
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Interesting article (eng./deu.) about the Koralmtunnel in "Geomechanics and Tunnelling":
http://www.file-upload.net/download-...eiten.pdf.html
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Old December 16th, 2013, 10:21 AM   #46
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Today:

Quote:
http://www.globalrailnews.com/2013/1...-construction/

Final contract awarded for BBT access shaft construction
13 DEC, 2013





Swietelsky Bau GmbH has been awarded a €104 million contract to deliver the second package of works to construct the ‘Wolf’ access shaft of the Brenner Base Tunnel (BBT) in Austria.

The Wolf II package will complete the 4-kilometre access tunnel for which excavation work began on December 4.

The €8.6 billion Brenner Base Tunnel (BBT) at 55 kilometres will be the second-longest rail tunnel in the world, behind the Gotthard Base Tunnel, once complete in 2025.

The Wolf tunnel is expected to be completed by 2018.
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Old January 14th, 2014, 10:56 AM   #47
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Published on 10 January 2014:

Quote:
http://www.4-traders.com/IMPLENIA-AG...nnel-17778803/

Implenia AG : Implenia wins major order to construct Semmering base tunnel
01/10/2014 | 12:58am

Dietlikon, 10 January 2014 - The planned Semmering base tunnel (SBT) is currently one of the most important large-scale infrastructure projects in Central Europe. It forms part of Austria's new southern railway, which serves as the central axis for trans-European routes from the Baltic coast to the Adriatic. With a total length of 27.3 km, the SBT links the country's Lower Austria and Steiermark regions. Austrian Federal Railways (ÖBB), which is responsible for awarding the contracts, has now commissioned the "ATF" consortium consisting of Implenia (technical lead) and Swietelsky, to do the work on the 13 kilometre long middle section (Lot 2.1). The two partners each have a 50% stake in the consortium. This section will be built using both TBM drilling (8.6 kilometres) and mining methods (4.3 kilometres). It involves 26 cross passages, an emergency stop station and two 400-metre ventilation shafts to supply the entire construction site. The contract for Lot 2.1 is worth EUR 623 million (around CHF 770 million; Implenia's share: CHF 385 million).

One of the main challenges in this major project is dealing with the geological conditions in the drilling zone. Added to this is the need to supply the construction sites with building materials and take away excavated matter - always with a view to finding sustainable solutions for people and the environment. Implenia's many years of experience, and particularly the expertise gained from the successful construction of the NEAT base tunnel, will be very useful in this new project. Implenia took the technical lead on three of the five lots within the NEAT project - Sedrun, Bodio and Faido. The Bodio and Faido sections were handed over on schedule to the client in September 2013 after approximately twelve years of construction. For Implenia, winning the Semmering contract marks a major milestone as it continues to builds up its infrastructure business in Western Europe. Construction works started at the beginning of January 2014 and will last around ten years. For more information about the project, please visit www.oebb.at/semmering.
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Old January 15th, 2014, 12:03 AM   #48
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The KAT and SBT projects sadly lack an image showing the progress of boring process, like for the BBT and GBT...
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Old January 16th, 2014, 01:40 AM   #49
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Excavating at the SBT has not started yet.

Still preparing the construction site, but digging should start any day now (if it has not already started).


http://www.bahnforum.info/smf/index....582#msg1553582

You are right though. I wish we would see something comparable for these tunnels as well.

As far as the KAT is concerned, boring from the Carinthian side is going to start this friday:

Quote:
Bohren für Koralm in Kärnten

Am Freitag beginnt der Bau des längsten Tunnelabschnitts
Graz/Klagenfurt - Der Bau von Tunnels geht trotz angespannter Budgetsituation und nie ausgeräumter Zweifel an deren verkehrswirtschaftlicher Sinnhaftigkeit unvermindert weiter: Am Freitag wird die Koralm nach einem Festakt mit Verkehrsministerin Doris Bures (SPÖ) auch auf Kärntner Seite angebohrt - und mit ihr der letzte Abschnitt des Koralmtunnels. 32,9 Kilometer lang ist dieses Herzstück der Koralmbahn zwischen Graz und Klagenfurt. Bauherr ÖBB plant die Eröffnung der auf mindestens 5,4 Milliarden Euro Baukosten taxierten Röhre im Jahr 2023. Die Bahnfahrt von Graz nach Klagenfurt soll dann eine statt drei Stunden dauern.

Der zweiröhrige Tunnel wird in drei Abschnitten gebaut. Das erste Baulos, 2,4 Kilometer vom Ostportal bei Frauental bis Leibenfeld (Bezirk Deutschlandsberg), ist bereits abgeschlossen. Die Arbeiten an Baulos 2, dem 18,8 Kilometer langen Mittelteil des Tunnels, sind in Gang. Nun folgt auf Kärntner Seite die Ausweitung des Sondierstollens vom späteren Westportal des Tunnels bei Mitterpichling (Gemeinde St. Paul, Bezirk Wolfsberg) 11,7 Kilometer weit in die Koralpe. Auf der neun Hektar großen Fläche vor dem Westportal werden Bürocontainer und Werkstätten aufgebaut und Bauteile für die Innenschale des Tunnels produziert. Zur Anlieferung des Baumaterials wurde eigens eine Anschlussstelle der angrenzenden Lavanttalbahn errichtet. Allein beim dritten Bauabschnitt des Mammutprojekts werden 400 Arbeiter im Dreischichtbetrieb arbeiten und 1,6 Mio. Kubikmeter Ausbruch aus dem Berg holen.

Am Ende werden zwei Röhren in einem Achsenabstand von 40 Metern, alle 500 Meter mit einem Querschlag verbunden, durch den Berg führen. Die Bahn wird bis zu 1200 Meter unter dem Gestein der Koralpe fahren. Der Durchschlag der Südröhre ist 2016 geplant, jener der Nordröhre 2018. Der Koralmtunnel wird einer der längsten Personenverkehrstunnel der Welt sein. (APA, DER STANDARD, 16.1.2014)
http://derstandart.at/1388651143056/...lm-in-Kaernten
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Old February 24th, 2014, 12:35 AM   #50
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I've read that works on Semmering base tunnel has been stopped by courts and a new environmental study is requested. Anyone has a more detailed info on why and what is likely to happen now?
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Old February 24th, 2014, 12:55 AM   #51
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A die hard NIMBY group was successful with a few complaints against aspects of the UVP (the environmental impact assessment). That means most likely a delay of up to 6 months or so, for addressing the complaints properly and possibly doing some slight adjustments. In the worst case however the project in its current form could be quesioned.
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Old February 25th, 2014, 03:02 AM   #52
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As it appears now, the environmental impact assessment act will be slightly amended in the next few days (bill already passed the committee). As an intended result, appeals against given HSR development consents will no longer be granted suspensive effect, thus making it possible for the applicant to start building straight away. This of course implies the risk of having the decision quashed later on, but at least no further delays until that happens, since NIMBY groups can no longer play their formal violations trump.

This does not only directly effect the SBT, but also the BBT and the Koralm Railway.

http://www.parlament.gv.at/PAKT/VHG/...11/index.shtml (German link only, sorry)
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Old June 17th, 2014, 04:49 PM   #53
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From Global Rail News:

Quote:
http://www.globalrailnews.com/2014/0...unnel-segment/

Work to start on Brenner Base Tunnel segment
12 JUN, 2014



A €380 million tunnelling contract for the Tulfes-Pfons section of the Brenner Base Tunnel (BBT) has been won by STRABAG and Italian contractor Salini Impregilo.

The contract, which is the largest to be awarded for the BBT project, covers 38 kilometres of tunnelling, including the main twin-tube railway and, an exploratory tunnel, a parallel rescue tunnel and connecting side tunnels.

Work is set to begin on site in the autumn and is expected to continue for the next four-and-a-half years.

The €8.6 billion Brenner Base Tunnel (BBT) will be the second-longest rail tunnel in the world, behind the Gotthard Base Tunnel, once complete in 2025.

The BBT is at the centre of the 2,200 kilometre Berlin – Palermo railway and once open, will cut the overall journey time by two-and-a-half hours
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Old June 22nd, 2014, 08:10 PM   #54
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According to this presentation, by November 2013 they bored 17 out of 68 km of the KAT, or 25%. In particular, out of the 40 km section KAT 2, 8 km have been bored by TBM and 4 km by drill&blast.

It is a shame that there is not a regularly update site showing brogress, like there is one for the BBT.

Another PDF, older but with some infos: http://www.acct.cl/presentaciones/Se...KAT_SCL_GH.pdf
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Old June 22nd, 2014, 11:32 PM   #55
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A partial description of the first SBT project: http://www.tunneltalk.com/Austria-Fe...lot-tunnel.php (the SBT now follow a totally different alignment)

Map of the Koralmbahn: http://www.baltic-adriatic.eu/upload...uction_Map.pdf

Both the KAT and the SBT will not have crossovers, which means 33 or 27 km of single track in case of maintenance or accident. A very very short-sighted choice IMHO, which will not save a lot of money (compared to the total cost of the projects) but will easily create problems.

To compare, in the BBT, GBT and the Channel tunnels there are crossovers every 17 to 20 km, and on heavily used, non underground double track lines it is not uncommon to have crossovers every 5 to 10 km.
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Old June 22nd, 2014, 11:36 PM   #56
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That is indeed short-sighted.
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Old June 22nd, 2014, 11:37 PM   #57
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That's a weird decision indeed. Will there be some safety tunnel for accidents? I would have thought otherwise it doesn't comply with the modern safety standards. Isn't that so?

By the way how are normally those connections made when the main tunnel is dug by TBM? By blasting or just drilling?
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Old June 22nd, 2014, 11:58 PM   #58
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In the KAT there will be an underground rescue station, but unlike the rescue stations in the other base tunnels of the Alps it will not have access from the outside (nor for people, nor for ventilation). However, in all these long tunnels evacuation of passengers should be via a train in the other tube, because exiting from access tunnels would be long or impractical (like the 800 m Sedrun shaft).

Note that the Japanese on their Shinkansen tunnels, and in the Seikan tunnel, don't built emergency exits or rescue tunnels at all. And they always use a single bore double track design. (well, I suppose the constructions adits are kept open, and there is a safety tunnel along part of the Seikan tunnel)

So the problem in the KAT and SBT is not about safety but about capacity if one tube is closed. During weeks-long closure (following a fire, maintenance, ...), and with traffic in both directions and passenger trains timetables adapted to best use the capacity of a single tube, the capacity of the KAT would be minimal, say 100/120 trains per day at best instead of 300/400.

To compare, the capacity of the Lötschberg base tunnel operated with a single track and conventional signalling (in case of ETCS failure), so with no more than one train in it at any time, was evaluated at 40 trains per day.

Minor connections between main tunnels bored by TBM are usually built by drill&blast, but other techniques can be used (especially in difficult or loose terrain), like roadheaders. All AlpTransit tunnels have been built by either TBM or drill&blast, while roadheaders have been used in Lausanne (for the M1, M2, and Tridel rail tunnels).
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Old June 23rd, 2014, 11:08 PM   #59
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More photos from Nachalnik (I suppose): http://www.ferrovie.it/forum/viewtop...29290#p1429290
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Old June 24th, 2014, 01:16 AM   #60
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Quote:
Originally Posted by Coccodrillo View Post
More photos from Nachalnik (I suppose): http://www.ferrovie.it/forum/viewtop...29290#p1429290
http://www.skyscrapercity.com/showpo...postcount=1014
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