The figures compare the cross-sections of two tunnels. Figure 1 illustrates a road tunnel under Mont Blanc joining two European countries, while Figure 2 shows a railway tunnel linking two islands in Japan.
Overall, it is clear that the railway tunnel in Japan is much longer than the tunnel under Mont Blanc. Also, the Seikan Railway Tunnel took much longer to build than the Mont Blanc Road Tunnel.
The depth of the Mont Blanc Tunnel is 3. 5 km at its maximum, compared to only 240m for the Seikan Tunnel. However, while the length of the Mont Blanc Tunnel connecting Italy and France is only 11. 6 km, the Seikan Tunnel is much longer, at 53. 85 km.
The construction times of the two tunnels were markedly different. The railway tunnel was built under the sea, connecting two Japanese islands, and its construction took 42 years to complete, starting in 1946 and finishing in 1988. The road tunnel under Mont Blanc, however, was completed in just 8 years, between 1957 and 1965.
The figures compare the cross-sections of two
tunnels
. Figure 1 illustrates a road
tunnel
under Mont Blanc joining two European countries, while Figure 2
shows
a
railway
tunnel
linking two islands in Japan.
Overall
, it is
clear
that the
railway
tunnel
in Japan is much longer than the
tunnel
under Mont Blanc.
Also
, the
Seikan
Railway
Tunnel
took much longer to build than the Mont Blanc Road Tunnel.
The depth of the Mont Blanc
Tunnel
is 3. 5 km at its maximum, compared to
only
240m
for the
Seikan
Tunnel
.
However
, while the length of the Mont Blanc
Tunnel
connecting Italy and France is
only
11. 6 km, the
Seikan
Tunnel
is much longer, at 53. 85 km.
The construction times of the two
tunnels
were
markedly
different
. The
railway
tunnel
was built
under the sea, connecting two Japanese islands, and its construction took 42 years to complete, starting in 1946 and finishing in 1988.
The
road
tunnel
under Mont Blanc,
however
,
was completed
in
just
8 years, between 1957 and 1965.