NIT Raipur Syllabus 7th Sem Mining Engineering

NIT-RAIPUR

SYLLABUS

VII SEM MINING ENGINEERING

 

Semester: B.Tech. VII Sem. Code: MI20711(MI)

Subject: Rock Mechanics Branch : Mining Engg

 

UNIT 1:

 

Application of rock mechanics in mining, Definition of important terms used in

Rock mechanics, Classification of rock mass, Parameters of rock mass classification,

Objective & Importance of rock mass classification, RQD, Q –system and Bieniaswski’s

Geomechanics classification of rock mass., RSR system, CMRI-ISM Geomechanics

Classification, Terzaghi Rock load theory.

 

UNIT 2:

 

Rock properties, Physico-mechanical properties of rock, Preparation and testing of

specimen in the laboratory, ISRM standards, Determination of Physico-mechanical

properties of rock as per ISRM standard testing procedures, Strength indices and their

importance. Point load, Protodyaknov, Impact and Cone Indenter strength Index.

 

UNIT 3:

 

Rock as an elastic medium, Principle of elastic analysis, Rheological properties of

rock, Importance of rheological models, Different types of rheological models, Dynamic

properties of rocks, Anisotropy and Creep.

 

UNIT 4:

 

Principal stress and Principal plane, Analytical method of determining the

magnitudes and directions of normal and shear stress on failure plane, Mohr’s circle,

Theories of failure of rock, Mohr’s theory, Mohr’s Coulomb failure criteria, Griffith’s theory,

Empirical theories of failure of rock, Different modes of failure of rock.

 

UNIT 5

 

: Earth stresses, Importance of measurements of in situ stress, measurements of in

situ stress by Flat jack, Overcoring and Hydraulic fracturing technique. Design of circular

and elliptical openings. Determination of safe span of roof.

 

Reference Books:

 

1. Rock Mechanics By Obert abd Duvall

2. Rock Mechanics By Goodman

3. Rock Mechanics By Jager & Cook

4. Rock Mechanics by B.S. Verma

 

Semester VII 36

 

NATIONAL INSTITUTE OF TECHNOLOGY, RAIPUR (C.G.)

 

L T P

 

3 1 0

 

Semester: B.Tech. VII Sem. Code: MI20712(MI)

 

Subject: Strata Control Branch : Mining Engg

 

UNIT 1: SUPPORTS

 

Timber & steel supports, Examination of roof, Roof bolting, roof stitching, method of

supporting roadways. Supporting under different conditions viz. Pit bottom, crossing,

junctions, faulted area, longwall faces, depillaring areas and stoping areas, support loads

.SSR, CTR, Support plan, Support withdrawal.

 

UNIT 2: POWERED SUPPORTS

 

Powered supports – their principles of operation, Classification, designation, constructional

features and applications, Hydraulic fluids.

 

UNIT 3 : STOWING

 

Principal methods of stowing, their relative merits and applicability, Hydraulic stowing,

Pneumatic stowing, Mechanical stowing, Hand packing, face arrangements, pipe wear, pipe

jams.

 

UNIT 4: STRATA CONTROL

 

Theories of ground movement, Rock pressure due to Narrow and Wide excavation, Front

abutment and back abutment, Failure of roof and floor, measurement of strata movement,

rock burst, bumps, gas outbursts, pot holes.

 

UNIT 5: SUBSIDENCE

 

Theories of subsidence, damage and loss due to subsidence, vertical and lateral

movements and their estimation, angle of fracture and angle of draw, factors affecting

subsidence, subsidence control, protection of surface structures, design of protection pillars

including shaft pillars. Pot holes.

 

Reference Books:

 

1. Strata control in mines Chaing & Peng

2. Winning and Working of Coal R. T. Deshmukh & D. J. Deshmukh

3. Modern Coal Mining Practices R. D. Singh

4. D.G.M.S. Circulars (Tech.) 1995 onwards

5. Longwall Mining Syd. S. Chaing & Peng

 

Semester VII 37

 

NATIONAL INSTITUTE OF TECHNOLOGY, RAIPUR (C.G.)

 

L T P

 

3 1 0

 

Semester: B.Tech. VII Sem. Code: MI20713(MI)

 

Subject: Blasting Technology Branch : Mining Engg

 

UNIT 1 COMMERCIAL EXPLOSIVES

 

Classification ,Low and High Explosive, Permitted and non permitted explosives, Important

characteristics, ANFO, Slurry, Emulsion explosives, Primers and boosters, cast booster,

Bulk explosive system.

 

UNIT 2 INITIATION SYSTEM, STORAGE AND TRANSPORTATION OF

 

EXPLOSIVES

 

Detonators, safety fuse, Detonation cord, Detonating relay, Non-electric initiation system,

NONEL, Electronic detonators, Exploder and other blasting tools, Magazines, transportation

of explosives.

 

UNIT 3 SURFACE BLAST DESIGN

 

Theory of Breakage, Bench Blasting terminology, Estimation of Spacing, Burden, Stemming

length, Sub-grade drilling etc., Charge calculation, initiation sequence, delay timing,

Decking decoupling, Secondary Blasting.

 

UNIT 4 UNDERGROUND BLAST DESIGN

 

Terminology, cut holes, easers, trimmers, commonly used cut patterns, Wedge cut, drag

cut, Pyramid cut, Burn cut, etc., blasting in sinking shaft, underground coal mine blasting,

series and parallel connections of detonators.

 

UNIT 5 ENVIRONMENTAL IMPACT OF BLASTING

 

Blast induced ground vibration, its measurement, prediction and control, Noise, its

measurements and control, Fly rock its causes and control, Controlled Blasting Techniques.

 

Reference Books:

 

1. Surface Blast Design by C.J. Konya.

2. Explosives and Blasting by G.K. Pradhan

3. Modern Techniques of Rock Blasting by U. Langefors and B. Kihlstrom.

4. Indian Explosive Act and Rules.

5. Engineering Rock blasting operations, Bhandari

6. Surface Blast Evaluation, N. R. Thote & Pradhan

7. Surface Blasting, P. Pal Roy

 

Semester VII 38

 

NATIONAL INSTITUTE OF TECHNOLOGY, RAIPUR (C.G.)

 

L T P

 

4 1 0

 

Semester: B.Tech. VII Sem. Code: MI20734(MI)

 

Subject: Professional Elective-I

 

(Surface Mining –II)

 

Branch : Mining Engg

 

Unit I

 

: Dragline, Stripping Shovel Layouts of open pit mines, Methods of sidecasting,

Sidecasting by Stripping Shovel and Dragline, Range/ Balancing Diagram, calculation of

operating radius. Layouts of waste dumps. Design of Haul roads.

 

Unit II

 

: Introduction to continuous surface mining equipment, Bucket wheel excavators,

constructional features, basic operation and productivity, Continuous surface miner, their

construction, basic operation and productivity. Face Layouts.

 

Unit III

 

: Ultimate pit design, Factors affecting ultimate pit limits; Significance of ultimate pit

limits; Manual methods of developing ultimate pit limits. Floating cone technique,

Production planning, some basic mine life and plant size concepts, Mine and Mill plant

sizing

 

Unit IV

 

: Introduction to rock slope engineering, Slopes in surface mines and their formation,

Pit slopes and their influence on mine economics, Slope/Dump stability, Factors influencing

slope/dump stability, various types of slope failure and their geometrical conditions.

 

Unit V

 

: Determination of factor of safety of a slope under plane and circular failure, planning

of slope stability investigations, Stabilization and protection methods for stability of slopes.

Waste dump stability parameters

 

Reference Books:

 

1. Surface Mining : G.B. Misra

2. Surface mining equipment : Martin

3. Surface Mining : Pfleider

4. Rock slope Engg. : Hoek & Bray

5. SME handbook : Hartman

6. Surface Mine Planning & Design : Hustrulid & Kuchha

 

Semester VII 39

 

NATIONAL INSTITUTE OF TECHNOLOGY, RAIPUR (C.G.)

 

L T P

 

4 1 0

 

Semester: B.Tech. VII Sem. Code: MI20734(MI)

 

Subject: Professional Elective-I (Numerical

 

Methods in Mining Engg.)

 

Branch: Mining Engg

 

UNIT-I INTRODUCTION TO ELASTIC AND PLASTIC MODELS

 

Fundamentals, elastic, plastic, homogeneous and isotropic, non-linear elastic and elastoplastic

models.

 

UNIT-II FINITE DIFFERENCE METHODS

 

Concept, formation of mesh element, finite difference patterns, solutions, application to

mining.

 

UNIT-III FINITE ELEMENT METHODS

 

Concept, discretisation, element configuration, element stiffness, assemblage and

solutions, two and three dimensional solutions, linear and non-linear analysis, applications

in geomechanics; simulation of joints in strata.

 

UNIT-IV BOUNDARY ELEMENT METHOD

 

Concept, discretisation, different methods of solution for isotropic and infinite media.

 

UNIT-V PRACTICAL APPLICATIONS IN MINING AND ROCK

 

MECHANICS

 

Practical Applications in stress analysis, slope stability, subsidence prediction, pillar design,

rock burst, etc.

 

Reference Books:

 

1. Desai, C.S. and Abel, J.F. Introduction to the finite Element Method, Van Nostrand

Riehokl Co., New York, 1983

2. Zienkiewicz, O.C. The Finite Element Method in Engineering Science, Tata McGraw

Hill.

3. Segerlind, L.J., Applied Finite Element Analysis, John Wiley and Sons, New York,

1987

4. Mukhopadyay, M. Matrix Finite Element – Computer and Structural Analysis, Oxford

and IBH Publishing co., 1984

5. Brown, E.T. (Ed) Analytical and Computational Methods in Engineering and Rock

Mechanics, Allen and Unwin, London, 1987

 

Semester VII 40

 

NATIONAL INSTITUTE OF TECHNOLOGY, RAIPUR (C.G.)

 

L T P

 

0 0 3

 

Semester: B.Tech. VII Sem. Code: MI20721(MI)

 

Subject: Rock Mechanics Lab Branch: Mining Engg

 

List of Practical:

 

1. Determination of moisture content of rock sample by ISRM standard method

2. Determination of porosity of rock sample by ISRM standard method

3. Determination of Density of rock sample by ISRM standard method

4. Determination of slake durability strength index of rock sample by ISRM standard

method

5. Determination of point load strength index of rock sample

6. Determination of Proto-dyakonov strength index of rock sample

7. Determination of Uni-axial Compressive strength of rock sample by ISRM standard

method

8. Determination of Tensile strength of rock sample by Brazilian method

9. Determination of Single Shear and Double Shear strength of rock sample

10. Determination of Tri-axial Compressive strength of rock sample by ISRM standard

method

11. Determination of Young’ Modulus of rock sample by ISRM standard method

 

NATIONAL INSTITUTE OF TECHNOLOGY, RAIPUR (C.G.)

 

L T P

 

0 0 3

 

Semester: B.Tech. VII Sem. Code: MI20722(MI)

 

Subject: Blasting Technology Lab Branch: Mining Engg

 

List of Experiments:

 

1. Measurement of ground vibration by seismograph

2. Development of predictor equation from the recorded data

3. Measurement of VOD by VOD mate and its analysis

4. Study of various fragmentation assessment techniques

5. Handling of WIPFRAG software

6. Design of blast for coal face

7. Design of blast for underground metal mine

8. Design of blast for bench blasting

9. Study of various blasting tools

10. Study of bulk explosive systems

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