Tunnel Engineering MCQs

1.In the 'full face' tunneling technique, what is the initial step performed?

Clearing the lower section firstDigging a central drift tunnelExcavating the upper segment initiallyStarting excavation around the tunnel's outer edge

2.For the construction of Metro Railways, the 'Cut and Cover' technique is most appropriate under which of the following conditions?

Conditions 1 and 2Conditions 1 and 3Conditions 1 and 4Conditions 2 and 3

3.Assertion (A): If the rock conditions are suitable, it is not essential to install concrete lining simultaneously during tunnel excavation until the entire tunnel length is completed. Reason (R): Tunnels constructed through rock, whether hard or soft, do not require any concrete lining. Which of the following is correct?

Both A and R are correct, and R correctly explains ABoth A and R are correct, but R does not explain AA is correct, but R is incorrectA is incorrect, but R is correctNone of the above

4.Which statement accurately describes the American tunneling method?

Only statement (i) is trueBoth statements (i) and (iii) are trueStatements (ii) and (iii) are trueStatements (i) and (ii) are true

5.Which of the following statements about the needle beam tunneling technique are accurate?

Only statement (i) is trueStatements (i), (ii), and (iv) are trueStatements (i), (iii), and (iv) are trueStatements (i) and (ii) are true

6.Assertion (A): The English tunneling technique takes more time compared to other tunneling methods. Reason (R): In the English tunneling method, masons and excavators work in an alternating sequence.

Both A and R are correct, and R accurately explains A.Both A and R are correct, but R does not explain A.A is correct, but R is incorrect.A is incorrect, but R is correct.

7.Which pair of the following drills are classified as percussion drills?

(i) Shot drill and (ii) Diamond drill(iii) Wagon drill and (iv) Churn drill(i) Shot drill and (iv) Churn drill(ii) Diamond drill and (iii) Wagon drillNone of the above

8.Which of the following represents the proper order of steps involved in constructing a shaft in rock?

Drilling and blasting, timbering, pumping, muckingDrilling and blasting, mucking, timbering, pumpingTimbering, drilling and blasting, mucking, pumpingTimbering, mucking, drilling and blasting, pumping

9.How does the explosive yield change when a charge is positioned equidistant from two free surfaces compared to being near a single free surface?

stays unchangedreducesrises by a factor of 2.25grows by 3.5 times

10.For which of the following is a circular tunnel cross-section considered unsuitable?

transporting watersoils lacking cohesionshield-driven tunneling methodsinstalling concrete lining

11.Given that 'N' represents the number of shafts utilized, what is the total count of faces available for excavation and construction activities in tunnels?

Twice the number of shafts (2N)The number of shafts plus two (N + 2)Two times the number of shafts plus one (2N + 1)Two times the number of shafts plus two (2N + 2)None of the above

12.Identify the item that is not part of the shield structure.

13.Given that 'D' represents the tunnel diameter in meters, what is the lining thickness in millimeters according to the empirical formula?

14.For tunnel liners, ribs are incorporated to enhance strength and rigidity when the tunnel diameter exceeds which of the following?

15.In the Belgium tunneling technique, which part is constructed first?

Side walls are finished prior to building the invert and roof arch.The roof arch is erected before the side walls and invert are constructed.The invert is completed before the side walls and roof arch are built.Both the invert and side walls are completed before constructing the roof arch.None of the above.

Tunnel Engineering MCQs

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