JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-Requisites

NIL

Course Objectives:

• The objective of this course is to provide students in mining engineering with the necessary knowledge to design safe, efficient and environmentally responsible surface mining operations.
• To know the various statutory aspects like CMR, MMR and the relevant DGMS circulars related to this course.

Course Outcome

The students will have ability to classify and select the suitable surface mining

methods and equipment based on site conditions. They will also have a concept of waste dump formations and slope failures in surface mines

UNIT - I

INTRODUCTION: Status of surface mining, types of surface mines, applicability and limitations, concept of stripping ratio, stripping economics, concept of ultimate pit limits, design of haul roads, elements of surface mine planning - selection of site for box cut, selection of operating parameters like bench height, width, slope, etc.

UNIT - II

LAYOUT AND DESIGN OF SURFACE MINES: Slopes in surface mines – Highwall and waste dumps; Working pit slope and ultimate pit slope, common modes of slope failures, factors influencing stability of slopes, Development of opencast mine layouts for various shapes of deposits. Conversion of Underground mine to opencast mine vis-a vis open cast mine to underground mine related problems and probable solutions.

UNIT - III

GROUND PREPARATION METHODS: Preparation of the site – Ripping, Drilling and Blasting; Types, operation, selection, applications and limitations of ground preparation equipments – Rippers, Dozers, Blasthole drills and rock breakers, Determining number of drill machines, dozers and rippers for planned production. Concept of rippability, Blasting in Opencast Mines over Developed Galleries. Introduction to Placer and Sea bed mining, hydraulicking, dredging ground slicing. Exploitation systems of sea bed mineral resources.

UNIT - IV

EXCAVATION SYSTEM IN SURFACE MINES: Selection criteria for excavation / loading and material transport equipment used in surface mines. Classification, application and limitations of different types of excavating / loading equipment used in surface mining projects; Cycle time and productivity calculation for excavating & loading equipments; Dragline - calculation of required bucket capacity for a given handling requirement, Method and cycle of operations of Draglines, Front end loaders, Scrapers, Bucket wheel and bucket chain excavators, Surface miners. Introduction to dredgers of different types. Determining the capacity and number of shovels and dumpers for planned production.

UNIT - V

TRANSPORT AND WASTE DUMPS: Scope and application of different modes of transport system in surface mines – Trucks, Synchronization of shovel and dumper capacity for required production; Locomotives; Conveyors (shiftable and high-angle) – mode of operation, applicability and limitations, Scope and application of in-pit crushers in surface mines. Illumination in surface mines. Types of waste dump – internal and external; dump formation methods and corresponding equipment; Dump stability

R18 B.TECH MINING ENGG. III YEAR

and stabilisation measures.

TEXT BOOKS:

• 1. Kennedy, B.A., Surface Mining – 2nd Edition, SME, New York, 1990.
• 2. Hartman H.L., Introductory Mining Engineering, John Wiley and Sons, 2002.

REFERENCES:

• 1. Hartman, H.L. (Ed.), SME Mining Engg. Handbook Vol. I and II, Society for Mining, Metallurgy, and Exploration, Inc., 3rd edition, 2011.
• 2. Mishra G.B., Surface Mining, Dhanbad Publishers, Dhanbad, 1990.
• 3. Pfleider, E. P, Surface Mining, 1st Edition, New York, 1968.
• 4. Rzhevsky V., Open pit Mining Operations, Mir Publications, 1971. R18 B.TECH MINING ENGG. III YEAR