JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

Course introduces underground and surface mining methods along with the

associated activities such as drilling, blasting and supporting for mines. Modes of entry into the underground mines with special emphasis on various shaft sinking methods for development of mineral deposits are also described.

Course Outcomes

At the end of the course the student will be able to

• 1. Know the status and significance of mining Industry.
• 2. Apply different methods of Shaft sinking according to the ground conditions.
• 3. Know about Development of workings.
• 4. Know about different types of supports, their advantages and disadvantages.
• 5. Know about different tunneling methods.

UNIT - I

Historical overview of mining, Distribution of mineral deposits in India and other countries, mining contributions to civilization, mining terminology, stages/operation in the life of the mine, introduction to underground and surface mining methods. Positive and negative aspects of mining.

UNIT - II

Introduction to drilling and drilling equipment. Types of explosives used for open cast and underground mining methods, initiating devices, short firing tools.

UNIT - III

Location of shaft, shape and size, incline and vertical shafts. Surface arrangements for sinking shafts, tools and equipments, ordinary methods of sinking, drilling, blasting, removal of debris and water, ventilation and lighting, temporary and permanent lining. Widening and deepening of shafts, special methods of shaft sinking: piling, caisson, freezing and cementation method of shaft sinking. Modern techniques of shaft sinking like shaft boring, shaft rising.

UNIT - IV

Modes of entry into deposits for underground mining- shafts, inclines, adits – their fields of applications. Drivage of drifts, organization and cycle of operations, modern methods of drifting and tunneling, road headers, tunnel boring.

UNIT - V

Objectives of mine supports, Types of supports; hydraulic props, Roof bolts, Powered supports, Timber supports, Roadway support, face supports, side supports, junction supports, supports in special conditions, setting and withdrawal of supports, systematic supporting Rules.

TEXT BOOKS:

• 1. Introductory mining engineering- Wiley India (P) Ltd, Howard L. Hartman, Jan M. Mutmansky.
• 2. Elements of mining technology Vol-I - D.J. Deshmukh

REFERENCE BOOKS:

• 1. Blasting in ground excavations and mines, Roy Pijush Pal, Oxford and IBH, 1st ed 1993
• 2. Drilling technology handbook, C.P. Chugh, Oxford and IBH, 1st ed, 1977