[Prague] Metro

[RawLee]

Originally Posted by Herzarsen

RawLee, how can a metro be heavy on part of the route and light on another? I think developers have to choose one way or the other. I think more then anything it depends on the trains. The main difference between these two forms is the size and capacity of the trains. And since the light system uses smaller trains the track does not have to be so deep and because of the smaller size of trains in light system the station size can be smaller.

Pretty easily..M3 was built in 5 phases.
Deák F. tér - Nagyvárad tér 1976. 12. 31.
Nagyvárad tér - Kőbánya-Kispest 1980. 03. 29.
Deák F. tér - Lehel tér 1981. 12. 30.
Lehel tér - Árpád híd 1984. 11. 05.
Árpád híd - Újpest-Központ 1990. 12. 14.

Stations on the map,that are not so deep,are at max 10m under the ground,but the others,the "heavy" part,are 20-28m deep. Light means it only needs mining methods to build,while heavy needs TBM.
We are not talking about light rail or heavy rail,but heavy metro and light metro.Metro is light rail.
(I'm not sure if M3 used TBM,but for the depth,I'd assume there was a TBM)

[BND]

The M3 is definitely heavy metro, it has the same trainsets as the line M2, what's more the trains on line 3 consist of 3 cars while on line 2 only 5 cars as far as I know

[RawLee]

Originally Posted by BND

The M3 is definitely heavy metro, it has the same trainsets as the line M2, what's more the trains on line 3 consist of 3 cars while on line 2 only 5 cars as far as I know

"
Heavy metro is the likes of Paris, Lyon, & Marseille systems.

Light metro is VAL (Toulouse, Lille, Rennes, Orly, CDG)."
source:http://www.skyscrapercity.com/archiv.../t-485627.html

BTW,M3 has 6 cars,M2 only 5.
so yes,M3 is heavy..sorry.

[headshottt]

source: metroweb.cz

[RawLee]

Typical..we also build a metro in the middle of a city of 2 million,but the company doesnt make a f*cking picture...

[Herzarsen]

Headshottt, great, amazing collection. Looks like its almost finished. I know about metroweb.cz but they have not updated their pictures for a while, so its great to see this. All stations look great, I am quite happy!

RawLee, they dont update as often as I would like either, but it would be great to see more images of Budapest metro.

[Bart_LCY]

Originally Posted by headshottt

Conratulations Prague!! Very nice and tastefull architecture of the stations, great project. Have one question, though. This black suspended walkway under the roof on a pictures above - are they going to leave like that? Couse in my opinion it doesn't fit there well. Or is it there for construction purposes only?

[RawLee]

Originally Posted by Bart_LCY

Conratulations Prague!! Very nice and tastefull architecture of the stations, great project. Have one question, though. This black suspended walkway under the roof on a pictures above - are they going to leave like that? Couse in my opinion it doesn't fit there well. Or is it there for construction purposes only?

I suppose thats a structure that carries various cables,which come out of the tunnel.Where else could they place them?

[Herzarsen]

Originally Posted by RawLee

I suppose thats a structure that carries various cables,which come out of the tunnel.Where else could they place them?

It could be temporary structure. Its hard to tell, I considered it almost like a structure for painters of the roof. But who knows. Let us see, if its left open like this it will not look good. I would presume the cables are built into walls. Maybe its structure for the lights? Any other thoughts? The whole structure is still being built so I doubt it will be left like this.

----------------------------------

Here is the map of Line A extension from Dejvicka to the Ruzyne Airport. (discussed in detailed above)

It includes all the planned extension phases. The first half should be done in 2013. It depends on money if it will be done all the way to Motol or the first part will end in Petriny station. The final phase is planned for completion in 2018.

[Herzarsen]

Originally Posted by Bart_LCY

Conratulations Prague!! Very nice and tastefull architecture of the stations, great project. Have one question, though. This black suspended walkway under the roof on a pictures above - are they going to leave like that? Couse in my opinion it doesn't fit there well. Or is it there for construction purposes only?

For sake of discussion here are two similar photos, two month apart.

July 2007



August 2007




So yes I think its temporary structure they used to paint or construct the red parts.

[kokpit]

this is the rendering, I don't see suspended structure there

[RawLee]

The structure is there,cant you see?it is suspended with cables,though.

[Qtya]

Originally Posted by RawLee

The structure is there,cant you see?it is suspended with cables,though.

I don't see it eather...

[Bart_LCY]

But these two renderings shows it clearly, I'm afraid I think this structure has some maintenance meaning...

[RawLee]

Originally Posted by Qtya

I don't see it eather...

[kokpit]

IMO it looks good

[BND]

I like that the ground stations are also fully covered, they are put in huge "halls", not the way here like M2 Pillangó u. or Örs Vezér tere, which are open and rain/snow falls in

[headshottt]

System of Prague metro includes 54 stations on 3 lines.

Little statistic
self track: 109,1 km
throat tracks among routes: 3,2 km
service tracks (shunting track, clutch to the depots etc.): 4,9 km
trial tracks: 5,2 km
tracks in depots: 32,2 km
on the whole: 154,6 km

cut-and-cover single - track tunnels (overall length): 28,124 km
cut-and-cover double - tracked tunnels (overall length): 0,637 km
driven single - track tunnel (overall length): 76,160 km
driven double - tracked tunnel (overall length): 2,700 km
bridges (overall length): 1,377 km

minimum used curve radius en route underground: 350m
minimum used declivity in underground track section: 3 per mille
maximum used declivity in underground track section: 40 per mille
maximum used declivity tracks in stations: 3 per mille
the deepest section of metro system is section Hradčanská - Malostranská: 68m
the deepest station of metro system is Námìstí Míru (line A): 53m

distance among through a tunnel and bottom of Vltava river (average): 20m

average of track section tunnels: 5,1m
station tunnels: 7,8m
escalator tunnels: 9,5/7,8m


Track map

Line C is connected with line A between I.P Pavlova and Náměstí Míru stations and the second connection is between Florenc B and Florec C stations.

Look to the connection A/C

B/C connection

Depos

Hostivař (A)

Zličín (B)

Kačerov (C)

Trial tracks

Zličín

Kačerov


Ice in tunnels




Historical photos from construction of metro


grouting under Vltava

under Vltava again






TBM




eating room for drifter men

Inverse tracks



Protective system of metro




Mysterious nooks of metro

[RawLee]

nice blast door! computer controlled,or needs human intervention?(I mean if the computer is capable of defining what is a danger alone,or a human should push a button)

[headshottt]

Originally Posted by RawLee

nice blast door! computer controlled,or needs human intervention?(I mean if the computer is capable of defining what is a danger alone,or a human should push a button)

Human must push it (I think).