JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

To introduce the basic concepts of surface mining, working principles of

excavation and transportation equipment such as shovel, dumper, bucket wheel excavator etc. and design of opencast mine. Placer and sea bed mining are added objectives of the course

Course Outcomes

At present 80% of the coal production and significant proportion of

other mineral output is coming from surface mines and hence students get a benefit of detailed understanding of various techniques of surface mining including operation and maintenance of associated machinery as outcome of this course.

UNIT - I

Basic concept of Surface Mining: Status of surface mining in India. Selection between surface mining and underground mining, Preliminary evaluation of surface mining prospects; stripping ratio – concepts and significance, mine life. Opening up of deposits with Box Cut: Factors affecting selection of site of box-cut, Production benches – formation parameters and factors affecting their selection

UNIT - II

Preparation for Excavation: Working principle of ripper and Scraper—their cycle of operation, application and limitation. Drilling, types of blast hole drills, performance parameters of drills, estimation of number of drills for a given mine production. Problems associated with drilling and blasting.

UNIT - III

Excavation and Transportation: Cyclic methods—shovel-dumper, pay-loader, dragline. Continuous methods – bucket wheel excavator, bucket chain excavator, continuous surface miner, conveyors. Principle and operation of these machines, their advantages and limitations, capacity calculations, maintenance. Other equipments-dozer, grader, loader, scraper, dumper crusher, maintenance of open pit equipment.

UNIT - IV

Design and organization: Basic design principle of large opencast mines and their organizational structure. Mechanized quarries over underground developed zones.

UNIT - V

Placer Mining and Sea bed Mining: Ground sluicing, Hydra licking and Dredging Exploitation systems of ocean mineral resources. Relevant provisions of coal mines and metalliferous mines regulation; Environmental problems due to surface mining and their remedial measures. Recent developments in the deployment of heavy earth moving machineries in the surface mines.

TEXT BOOKS:

• 1. S. K. Das - Surface Mining Technology
• 2. G.B. Misra - Surface Mining

REFERENCE BOOKS:

• 1. R.D. Singh– Principles and Practices of Modern Coal Mining
• 2. H.L. Hartman - Introductory Mining Engineering.