JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-Requisites

NIL

Course Objectives

To familiarize the subjects with the recent trends in tunneling methods including

design of supports, maintenance off tunnels, provision of facilities such as ventilation, illumination etc. in tunnels.

Course Outcomes

Students can understand various methods of tunneling use of latest numerical

techniques for tunnel design, stability analysis, and ground control measures with various steel support and rock reinforcement

UNIT - I

Introduction to tunneling; geological parameters to be considered for tunneling. Influence of geological aspects on design & construction of tunnels. Types of underground excavations.

UNIT - II

Different methods of tunneling; Conventional and special drill & blast roadway drivage methods, Tunnel Boring Machine (TBM);

UNIT - III

Stresses and displacements associated with excavating tunnels, Ground control or treatment in tunneling and drivages. Design of Supports of Tunnels; Steel supports, rock enforcements, new Australian tunneling methods (NATM)

UNIT - IV

Design of Tunnels: Rock conditions, RMR, Q-system, RSR, rock mass behaviour, stress strain behaviour, and stress analysis of tunnels. Maintenance: Dewatering, ventilation and illumination drivages tunnels.

UNIT - V

Tunneling in soft ground; Excavation of large tunnels; hazards in tunneling. Ground treatment in excavation.; application of road headers and drill jumbos in tunneling: principle of operation, applicability, advantages and limitations. Applications of numerical techniques and relevant software’s in tunneling (in brief).

TEXT BOOKS:

• 1. Richards E. Bullock – Tunneling and Underground Construction Techniques
• 2. Stack Barbara – Hand Book of Mining and Tunneling Machinery, John Wiley & Sons.

REFERENCE BOOKS:

• 1. R.V. Proctor – Rock Tunneling with Steel Supports
• 2. J. Johnsen – Modern Trends in Tunneling and Blast Design R18 B.TECH MINING ENGG. III YEAR