Tunnelling Multiple Choice Questions and Answers

11. The explosive used in tunnelling is

1. blastic gelatine
2. semi-gelatine
3. ammonia dynamite
4. any one of the above

12. The length of the first tunnel built in the world of Babylon in the year 2000 BC was

1. 300 m
2. 500 m
3. 700 m
4. 900 m

13. The method employing steel lined plates and air compressors for driving them is known as

1. needle beam method
2. tunnelling with liner plates
3. shield method
4. none of the above

14. The method in which roof arch is completed before excavating a trench for laying muck track is known as

1. American method
2. English method
3. Belgium method
4. Austrian method

15. The method of lining in tunnels is

1. brick masonry lining
2. stone masonry lining
3. concrete lining
4. all the above

16. Which one of the following is not a drilling pattern adopted in tunnelling?

1. Fan cut
2. V-cut
3. Cylinder cut
4. Vertical wedge cut

17. Which one of the following is not a method of supporting roof and sides in multiple drift method of tunnelling?

1. Belgium method
2. German method
3. Austrian method
4. Japanese method

18. Which one of the following is not a method of tunnelling in firm soft strata?

1. Needle beam method
2. Full face method
3. Top heading and benching
4. Drift method

19. Which one of the following is not a method of tunnelling in running ground?

1. Needle beam method
2. Flying arch method
3. Liner plate method
4. Top heading and benching method

20. Which one of the following is not a permanent drainage work

1. pumping water
2. providing longitudinal drains
3. concrete lining
4. grouting with cement chemicals