How are Underwater tunnels made. By: Grayson & Don.

How are Underwater tunnels made.

By: Grayson & Don

http://en.wikipedia.org/wiki/File:North_east_Line_tunnels.jpg

Question 1Question: What is the biggest underwater tunnel?

Answer: The Seikan Tunnel is a 33.46 mi railway tunnel in Japan, with a 14.5 mi portion under the sea. It is the longest undersea tunnel in the world.

We Got It On: Wikipedia

Question 2Question: What is the first underwater tunnel?

Answer: The Thames Tunnel is the first underwater tunnel, built beneath the River Thames in London.


Question 3Question: What was the shape of the first underwater tunnel?

Answer: The shape of the first underwater tunnel is dome shaped.

We Got It On: Grolier

Question 4Question: How deep was the first underwater

tunnel?

Answer: The first underwater tunnel was 75 feet or 23 meters below the river's surface.

We Got It On: Media Center Website

Question 5Question: Were there leaks in the first

underwater tunnel?

Answer: Yes, there were leaks in the first underwater tunnel.


Question 6Question: What are underwater tunnels made of?

Answer: The underwater tunnel is made of steel and concrete.


Question 7Question: Have underwater tunnels collapsed?

Answer: Yes, they have collapsed.


The Main QuestionQuestion: How are underwater tunnels made?

Answer: A tunnel shield, a rectangular cast iron wall with dozens of small shutters, let people build tunnels underwater. Marc Bunnel, a French Engineer invented the tunnel shield.

We Got It On: World Book

How are Underwater tunnels made. By: Grayson & Don.

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