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Han River tunnels

 
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Holyjoe



Joined: 03 Mar 2003
Location: Away for a cuppa

PostPosted: Mon Dec 08, 2003 5:49 pm    Post subject: Han River tunnels Reply with quote

Was having a discussion the other day about why almost all road & rail traffic seems to go over the Han instead of under the Han, and one of my students said it was because it's a defence mechanism against North Korea - ie if they come pouring across the border then all the bridges can be destroyed and it would hold them up from crossing the river.

Plausible?
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Stunted Wookie



Joined: 06 Feb 2003
Location: Sound Studio

PostPosted: Mon Dec 08, 2003 5:55 pm    Post subject: river tunnels Reply with quote

naw not plausible....sounds too organized and thought out Twisted Evil
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panthermodern



Joined: 08 Feb 2003
Location: Taxronto

PostPosted: Mon Dec 08, 2003 7:47 pm    Post subject: Reply with quote

The answer is very simple: while yes you can blow-up bridges you can also blow tunnels (eaiser too), the real factor is that bridges are cheaper and faster to build then tunnels. In addition it is much easier to expand, repair, and modify a bridge then it is a tunnel.

Economic factors make bridges more practical.
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bucheon bum



Joined: 16 Jan 2003

PostPosted: Tue Dec 09, 2003 12:01 am    Post subject: Reply with quote

Not plausible for the reason PM gave: you can blow up a tunnel just as easily.

the question is, why did they make line #5 go under the Han while every other line that crosses it is on a bridge?
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ratslash



Joined: 08 May 2003

PostPosted: Tue Dec 09, 2003 1:32 am    Post subject: Reply with quote

sounds good to me. i've also wondered about the national assembly building being on an island. not just on an island, on the corner of the island backed onto the river. surely a security issue?
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ratslash



Joined: 08 May 2003

PostPosted: Tue Dec 09, 2003 1:33 am    Post subject: Reply with quote

but then again, tunnels can also be destroyed, probably a lot easier than bridges.
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Mr. Pink



Joined: 21 Oct 2003
Location: China

PostPosted: Tue Dec 09, 2003 2:28 am    Post subject: Reply with quote

You guys do know every bridge in Seoul is wired so they can blow it at short notice right? Ever wonder why there are soldiers on both sides of the bridges?
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Holyjoe



Joined: 03 Mar 2003
Location: Away for a cuppa

PostPosted: Tue Dec 09, 2003 4:54 am    Post subject: Reply with quote

I was thinking about this from the point of view of it being a defence mechanism today... and the thing about tunnels is although it would be easier to collapse one in, it would then perhaps be easier for the enemy to excavate the blockage than it would be to reconstruct a crossing over the river.

On the Assembly building point - is Yeouido actually an island now? Any time I've gone there I've failed to see where the river actually flows round it on the south side to make it an island. It appears they've done a lot of land reclamation work and it's actually a peninsula now...
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Hank Scorpio



Joined: 18 Jan 2003
Location: Ann Arbor, MI

PostPosted: Tue Dec 09, 2003 5:12 am    Post subject: Reply with quote

Holyjoe wrote:
I was thinking about this from the point of view of it being a defence mechanism today... and the thing about tunnels is although it would be easier to collapse one in, it would then perhaps be easier for the enemy to excavate the blockage than it would be to reconstruct a crossing over the river.


Not with all that water permanently destroying the tunnel. By contrast, pontoon bridges are fairly trivial to implement.
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Holyjoe



Joined: 03 Mar 2003
Location: Away for a cuppa

PostPosted: Tue Dec 09, 2003 5:25 am    Post subject: Reply with quote

Hank Scorpio wrote:
Not with all that water permanently destroying the tunnel. By contrast, pontoon bridges are fairly trivial to implement.


Fair enough Hank, guess I wasn't thinking hard enough Wink
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panthermodern



Joined: 08 Feb 2003
Location: Taxronto

PostPosted: Tue Dec 09, 2003 6:13 am    Post subject: Reply with quote

Bridge wreakage would also stop the Han river from being a good invasion route down river.

One thing that gets me about the "Killbox" nickname:

Sure, there would be millions of civilian casualities, but, Seoul itself once ruined would be hellish to invade and very "easy" to defend.

Has anyone aside me noticed how far underground the Iteawon subway station is; I am sure part of the US defence plan is to use the subway system as part of a 3-D maginot line.

With modern weapons such as man carried Dragon, Stinger and Javelin missles, RF-RPG launchers, Barret sniper rifles, and other heavy weapons a very large amount of portable firepower could be carried around in the subway system by train or Hummer.

The subway system also seems to be "conveniently" above ground on most lines at speratic places. With modern heavy mortars, C3 and concealed spotters the U.S.A.F.K. could "shoot and scoot" in and out ot the tunnels.

Yes, the N.K. ART Strikes will kill millions, and the U.S.A.F. will quickly gain air superiority, but against the "human" wave across the DMZ, Seoul will be a rock vs that tide.

If you survive the Artillery, Gas, Bio-Chems, Nerve Gas, and possible Nukes is probibly as safe as any on the penninsula.

(Big Ifs)
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ratslash



Joined: 08 May 2003

PostPosted: Tue Dec 09, 2003 8:02 pm    Post subject: Reply with quote

Holyjoe wrote:
On the Assembly building point - is Yeouido actually an island now? Any time I've gone there I've failed to see where the river actually flows round it on the south side to make it an island. It appears they've done a lot of land reclamation work and it's actually a peninsula now...


yes, just about. there is a nothing more than a creek really on the far side from the main river. theoretically still an island but only just.
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diver



Joined: 16 Jun 2003

PostPosted: Tue Dec 09, 2003 8:18 pm    Post subject: Reply with quote

Hank,

Pontoon bridges are fairly easy (says the guy who has never done it) to set up...on sunny days...in peacetime. sure I wouldn't want to be a North Korean engineer trying to do so while on the receiving end of US air power. YIKES!
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