JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III TUNNELING ENGINEERING Previous Question Paper (January/February - 2023 - R18)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is importance and objectives of Tunnel alignment?
Answer
Tunnel alignment is critical for minimizing construction costs, ensuring structural stability, and meeting functional requirements. Its primary objectives are to select the shortest possible route, minimize geological hazards, ensure favorable gradients for drainage and transport, and provide optimal access to portals.
Describe the Shapes of Tunnel Lining?
Answer
Common shapes of tunnel linings include:
- Circular: Ideal for resisting uniform external pressure, commonly used in soft ground or TBM tunnels.
- Horseshoe: Combines a curved roof with vertical or slightly battered walls, suitable for railway or highway tunnels.
- Rectangular/Square: Used in shallow tunnels or cut-and-cover construction.
- Egg-shaped: Primarily used in sewer tunnels to maintain flow velocity.
What are the cycle of operations by mechanized tunneling method?
Answer
Sign in to view the complete answer paper.
What are the advantages of Mechanized Tunneling over conventional tunneling method?
Answer
Sign in to view the complete answer paper.
What are the commonly used grouts in tunneling?
Answer
Sign in to view the complete answer paper.
What are the different types of permanent supports used in tunnel construction?
Answer
Sign in to view the complete answer paper.
What are the different types of ventilation systems adopted in a Tunnel?
Answer
Sign in to view the complete answer paper.
Describe the stress strain behavior in Tunnels?
Answer
Sign in to view the complete answer paper.
What are Domain discretization methods?
Answer
Sign in to view the complete answer paper.
What are the applications of road headers and drill jumbos in tunneling?
Answer
Sign in to view the complete answer paper.
Part B
List the set of equipment used in conventional tunneling method.
Answer
Sign in to view the complete answer paper.
Explain the Tunneling method to be adopted in water bearing strata.
Answer
Sign in to view the complete answer paper.
Explain the squeezing and swelling ground conditions on Tunneling with sketches.
Answer
Sign in to view the complete answer paper.
Explain the influence of ground water aspects on Tunneling.
Answer
Sign in to view the complete answer paper.
Explain the procedure of TBM excavation tunneling.
Answer
Sign in to view the complete answer paper.
What are the disadvantage of TBM excavation method?
Answer
Sign in to view the complete answer paper.
Explain the excavation sequence in the conventional tunneling method with sketches.
Answer
Sign in to view the complete answer paper.
Explain the tunnel excavation process of New Australian Tunneling Methods (NATM).
Answer
Sign in to view the complete answer paper.
What is Grouting?
Answer
Sign in to view the complete answer paper.
What are the different patterns of propagation of grout in to the ground? Explain.
Answer
Sign in to view the complete answer paper.
What are the problems associated with the improper dewatering of tunnel during its drivage?
Answer
Sign in to view the complete answer paper.
List different dewatering methods used during tunnel drivage and explain any two methods.
Answer
Sign in to view the complete answer paper.
Discuss about the importance of Q-system in Tunnel design and support design.
Answer
Sign in to view the complete answer paper.
Explain about the identification and assessment of Hazards in Tunneling.
Answer
Sign in to view the complete answer paper.
What are the tunnel modeling softwares?
Answer
Sign in to view the complete answer paper.
What are benefits of use of tunnel modeling software?
Answer
Sign in to view the complete answer paper.