JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-Requisites

NIL

Course Objectives

To familiarize the students with highly specialized subject of design of rock

breaking techniques with more emphasis on computational models, controlled blasting, instrumentation for monitoring blasting operations in mines.

Course Outcomes

Although shotfirer supervisor the drilling and blasting operation statutorily any

mines, students are expected to have detailed knowledge on rock fragmentation techniques. This course enables the student to have clear perception of rock fragmentation techniques and its field applications.

UNIT - I

General theory of rock cutting, selection of cutting tools for optimum penetration and wear characteristics. Mechanics of rotary, percussive and rotary-percussive drilling, short and long hole drilling equipment, different types of bits, bit wear, drilling in difficult formations, drillibality of rocks, drilling performance and costs.

UNIT - II

Mechanism of rock breaking machines, Pneumatic and Hydraulic rock hammers. Mechanics of rock fragmentation and fracture by explosive action, Types of explosives, Blasting accessories, blasting parameters, design of blasting rounds for opencast and underground mines, Blastability of rocks, blasting efficiency, mean fragment size.

UNIT - III

Computational models of blasting, transient ground motion, misfires, blown out shots, incomplete detonation – their cases and remedial measures.

UNIT - IV

Controlled blasting techniques, perimeter blasting, safety precautions, ground vibrations and air over pressure from blasting.

UNIT - V

Instrumentation in blasting, Borehole pressure transducer, V.O.D probe, vibration monitor, high speed video camera. Impact of ground vibration and sound on the neighboring structures and communities, and mitigative measures.

TEXT BOOKS:

• 1. P. Pal Roy Rock Blasting effect and operation, A A Barkolna 2005
• 2. S. K. Das Explosive and Blasting Practices in Mines Lordy Prakashan, 1993

REFERENCE BOOKS:

• 1. B. H. Garg: Blasting Operation, McGraw Hill, 1981
• 2. CP Chugh, Drilling Technology Handbook, Oxford & IBH, 1977 MN713PE: RISK ASSESSMENT AND MANAGEMENT (PE - III) B.Tech. IV Year I Sem. L T P C 3 0 0 3

Pre-requisites

Under graduate Physics and Maths.

Course Objectives

Upon completion of the course, the students shall be able to know the components

of safety risk assessment, Epidemiological studies along with safety audit and management in mines

Course Outcomes

To understand the terminology and reason for preventing accidents, components

of Risk Assessment. Apply the Safety Policies, Safety Audit and Safety Management in Mines along with Case studies

UNIT - I

Introduction to Accident Prevention and Health & Safety in Industry: Terminology, Reason for preventing accidents – moral, cost, legal.

UNIT - II

Accident statistics and trends in mining industry; Safety Risk in Opencast and Underground Mines; Risk Assessment: Concepts, Qualitative and Quantitative Approaches;

UNIT - III

Components of Risk Assessment: Risk Identification, Risk Estimation and Evaluation; Risk Analysis using FTA, HAZOP, ETA etc.; Risk Analysis Softwares; Health Risk Assessment and

UNIT - IV

Epidemiological Studies; Statistical and Economic Analysis of Accident Data; Risk Minimization Techniques in Mines; Generic approach to loss control within mining operations; Safety Policies, Safety Audit and Safety Management in Mines.

UNIT - V

Application of Virtual Reality for Safety, Training and Marketing; Case studies on Safety Risk Assessment in Mining and allied industries

TEXT BOOKS:

• 1. B. K. Kejriwal, Safety in Mines, Lovely Prakashan, Dhanbad, 2002.
• 2. N. J. Bahr, System Safety Engineering and Risk Assessment: A Practical Approach, Taylor and Francis, NY, 1997.

REFERENCE BOOKS:

1 Bhattacharya, Accident Prevention and Safety Management in Mines, Short Term Course, Nov. 30-3rd Dec., 2004, IIT, Kharagpur, 2004. 2 Clifton, Ericson II, Hazard Analysis Techniques for System Safety, John Wiley & sons, New Jersey, Canada, 2005.