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3.9. Click here to watch photos from the construction site of the gbt.

http://www.guardian.co.uk/world/gallery/2010/oct/15/gotthard-base-tunnel-pictures-switzerland#/?picture=367714914&index=0

3.10. Click here to watch video about the gbt. Speak about your impression about this project.

http://dsc.discovery.com/videos/mega-engineering-tunnel-boring-machines.html

Unit 4. The future of tunnels.

4.1. Read and try to memorize the words.

expedite

v

ускорять, направлять; посылать

fissure

n

трещина, расщелина, щель

improve

v

улучшать

jet

n

реактивная струя; высокоскоростной поток

levitate

v

свободно парить

snapshot

v

фиксировать

ultrasonic

a

ультразвуковой

4.2. Read and translate the following word combinations.

advanced imaging technology, to scan the inside of the earth, sound waves travel through the ground, tunnel’s potential environment, expedite excavation and ground support, take advantage of high-pressure water jets, a magnetically-levitated train.

4.3. Translate the text “The future of tunnels” in written form with a dictionary. Try to manage within 25 minutes. The future of tunnels

As their tools improve, engineers continue to build longer and bigger tunnels. Recently, advanced imaging technology has been available to scan the inside of the earth by computing how sound waves travel through the ground. This new tool provides an accurate snapshot of a tunnel’s potential environment, showing rock and soil types, as well as geologic anomalies such as faults and fissures.

While such technology promises to improve tunnel planning, other advances will expedite excavation and ground support. The next generation of tunnel-boring machines will be able to cut 1,600 tons of muck per hour. Engineers are also experimenting with other rock-cutting methods that take advantage of high-pressure water jets, lasers or ultrasonics. And chemical engineers are working on new types of concrete that harden faster because they use resins and other polymers instead of cement.

With new technologies and techniques, tunnels that seemed impossible even 10 years ago suddenly seem doable. One such tunnel is a proposed Transatlantic Tunnel connecting New York with London. The 3,100-mile-long tunnel would house a magnetically-levitated train traveling 5,000 miles per hour. The estimated trip time is 54 minutes – almost seven hours shorter than an average transatlantic flight.

4.4. Click here to watch the video about the construction of the Transatlantic Tunnel:

http://videos.howstuffworks.com/science/extreme-engineering-videos-playlist.htm?page=7#video-29854

Watching the video try to find the following information:

What kind of a tunnel will a Transatlantic Tunnel be?

Where will it be constructed?

Will it be the project of only one country?

How much will it cost?

How long will the construction last?

Who (or what) will help the construction?

4.5. Summarize all information from the video and try to speak about a Transatlantic Tunnel if ever built.

4.6. Click here to watch the video about another future tunnel project:

http://dsc.discovery.com/videos/mega-engineering-building-a-transcontinental-tunnel.html

Watching the video try to find out the answers to the following questions:

1. Where will this tunnel be constructed?

2. What will it be famous for?

4.7. Now study the text “Tunnel planned between Russia and USA” and be ready to answer the questions.

1. Is it a new idea to construct a tunnel across the Bering Strait?

2. When was it discussed for the first time?

3. How long will this tunnel be?

4. Where it will be placed?

5. How much will it cost?

6. What is you opinion if this tunnel would be ever built? Why?

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