Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Tunneling Shaft sinking and drifting.doc
Скачиваний:
1
Добавлен:
08.05.2019
Размер:
2.68 Mб
Скачать

2.14. Match the words in a with their synonyms in b. Write down the answers.

A B

1. manually

1. to drill

2. to utilize, to apply

2. to include

3. important

3. to use

4. to bore

4. to supply

5. to comprise

5. by hand

6. to provide

6. to take into consideration

7. to take into account

7. significant

2.15. Match the words in a with their antonyms in b. Write down the answers.

A B

1. vertical

1. undetonated

2. hard

2. permanent

3. expensive

3. horizontal

4. risky

4. cheap

5. detonated

5. safe

6. temporary

6. easy, soft

7. deep

7. unlike

8. like

8. shallow

2.16. Click here to watch the video how tbm works in hard rock:

http://www.youtube.com/watch?v=yFHrI3HFMDg&feature=related

2.17. Read the text “What is trenchless technology? and decide if the folloing statesments are true or false.

1. The term “trenchless technology” refers to the techniques and methods when we need to build a new traffic tunnel underground.

2. There are more advantages when we use trenchless technology than disadvantages.

3. Trenchless technology, as compared to other methods, is simpler because it does not involve complex processes and skilled manpower.

4. But it consumes a lot of time when it comes to construction.

5. Trenchless technology is actually becoming the trend now among many cities worldwide.

What is trenchless technology?

The term “trenchless technology” refers to the techniques and methods when it comes to repair, installation, modification, and rehabilitation (реконструкция) of pipes and cables underground minus the disturbance (нарушение) that it creates on the structures above.

Trenchless technology is actually being used in developed cities in order to eliminate the problems when it comes to cable wires and water systems. There are actually a lot of advantages when it comes to the use of trenchless technology and the following are the examples of the advantages of the use of trenchless technology.

One of the main advantages of using trenchless technology is that since the pipes, cables, and other stuff are located underground, we may be able to avoid disrupting the traffic above. Plus there is also no space wasted above for the pipelines and cables unlike when the latters are above the ground.

Another advantage of using trenchless technology is that it does not waste any resources since the street that has been dug up actually need not to be fixed or rebuilt.

Trenchless technology, as compared to other methods, is way simpler since it does not involve complex processes and skilled manpower. It does not also consume a lot of time when it comes to construction because it is very easy and quick to complete.

Trenchless technology is also known as the “no dig” technology and it is actually becoming the trend now among many cities because of all the benefits and advantages that come with the use of it.

If there is one disadvantage when it comes to the use of trenchless technology, which is the fact that the equipment or tools that are used in construction as well as the maintenance are very costly. Up until this time, this obstacle is the only reason on why other cities do not adapt this technology.

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]