Roland Perry wrote:
In message , at
07:54:39 on Fri, 10 Jul 2009, Arthur Figgis
remarked:
Tony Polson wrote:

and a lot of noise in operation,

In that case, copy foreign lines. Problem solved.

How do they reduce the operating noise? Is it by running mainly through
open countryside, tunnelling under towns, or what?

The Stuttgart-Ulm project in Germany contains a staggering amount of
tunnel - it's virtually a long-distance Tube line. The bits that aren't
in tunnel are alongside an autobahn.

Tom

In message , at 09:29:53 on Fri, 10
Jul 2009, Tom Barry remarked:
Tony Polson wrote:

and a lot of noise in operation,

In that case, copy foreign lines. Problem solved.
How do they reduce the operating noise? Is it by running mainly
through open countryside, tunnelling under towns, or what?

The Stuttgart-Ulm project in Germany contains a staggering amount of
tunnel - it's virtually a long-distance Tube line.

Weren't we also trying to work out why the UK spent twice as much as any
foreigners on new lines. Are we spending twice as much as that line?

The bits that aren't in tunnel are alongside an autobahn.

--
Roland Perry

Tom Barry writes:
How do they reduce the operating noise? Is it by running mainly
through open countryside, tunnelling under towns, or what?

The Stuttgart-Ulm project in Germany contains a staggering amount of
tunnel - it's virtually a long-distance Tube line. The bits that aren't
in tunnel are alongside an autobahn.

The Chuo (maglev) Shinkansen (now in planning stage) is supposedly going
to be 60% underground. The chosen route is 286km long, and very
mountainous.

...
The primary reason for the project's huge expense is that it is
planned to run in a tunnel for more than 60% of the entire line, and
40 m underground (deep underground) for a total of 100 km in the
Tokyo, Nagoya and Osaka areas.

(http://en.wikipedia.org/wiki/Chū�_Shinkansen)

From what I understand, one big reason for constructing the new line,
instead of trying to increase speeds on the existing tokaido line, is
aerodynamic noise in populated areas. I guess building 40m underground
through sparsely populated areas should give them a bit of relief from
that problem; sure it costs 50 billion dollars, but...

-Miles

--
Corporation, n. An ingenious device for obtaining individual profit without
individual responsibility.