MT20 : MINE MANAGEMENT, LEGISLATION & SAFETY

Mine Management, Legislation & Safety

UNIT - 1

MINES ACT 1952 

1 .1 Important definition eg. Adolescent, adult, child, Employed, Mine, Open cast working, Relay, Shift, Serious bodily injury.

1 .2 Provisions under chapter V,

1 .3 Provision for health and safety.

1 .4 Hours & Limitations of Employment, Act 28 to 48.

1.5 Provisions regarding leave with wages, Act 49 to 56

UNIT - 2

MINES RULES 1955

2.1 Provisions regarding health & sanitation, first aid and medical appliances.

2.2 Mines Rules- Provisions connected with leave with wages and over time and welfare amenities. Employment of persons, Rule 46 to 52.

UNIT - 3

COAL MINES REGULATIONS 2017

3.1 Important definitions.

3.2 Duties and responsibilities of workman, competent person & officials. Provisions of Reg. 38, 39, 40, 41,42,43, 44, 45, 46,47, 48, 49,50,53, 56

3.3 Plans and sections Reg. 64, 65, 68, 69

3.4 Means of access & egress. Reg.70 to 75

3.5 Provisions regarding winding in shaft Reg. 76 to 90.

3.6 Transport of men & material Reg. 92 to 103

3.7 Mine working Reg. 104 to 132

3.8 Precautions against dangers from the dust gas & water Reg. 133 to 152.

3.9 Ventilation Reg. 153 to 173

3.1 0 Provisions regarding lighting and safety lamp – Reg. 174 to 182

3.1 1 Explosives & Blasting. Reg. 183 to 207

3.1 2 Provisions regarding machinery, plant & equipments and important provisions on miscellaneous regulations.

UNIT - 4

MINE ACCIDENTS

4.1 Types of mine accidents, their classifications,

4.2 Causes of accidents due to fall of roof, explosives and blasting, haulage and winding and their preventions.

4.3 Cause and prevention of accidents due to, fires, explosions and inundations. Safety statistics, safety drive and organization of safety in the mines/area etc

UNIT - 5

MANAGEMENT

Types of business organizations, organization of Coal India Ltd. Supervision qualities of good supervisors, Leadership, functions of industrial leadership, delegation of responsibility Principles of time study, Wage and payment Trade unions, their functions. Strikes and lockouts

UNIT - 6

GENRAL SAFETY

Circulars, Bylaws & Standing orders.

6.1 Philosophy of safety , unsafe acts and conditions

6.2 Accident investigation, precaution and monitoring

6.3 Systematic support rules for coal mine with Board and pillar method of working.

6.4 Conditions for solid blasting with P5 explosives.

6.5 Precautions for use of Auxiliary fan underground. 

6.6 Procedure for dealing with misfire. 

6.7 Precautions regarding Blown through shots. 

6.8 Model standing order in the event of stoppage of main mechanical ventilator.

6.9 Maximum air velocity.

UNIT - 7

INSPECTION PROCEDURE :

Procedure of inspection of old working, Haulage roadways, sinking shaft, working shaft, Winding rope,

UNIT - 8

MINES RESCUE RULES :

Important provisions of coal mines rescue rules. 

8.1 Organization & equipment in mines.

8.2 Rescue station.

8.3 Conduct of rescue work

MT20 : MINING MACHINERY - II

Mining Machinery - II
Unit - 1	TRANSPORT OF ORE  1.1 Different types of haulages  1.2 Description of each haulage system. 1.2.1 Direct rope haulage 1.2.2 Endless rope haulage 1.2.3 Main and Tail rope haulage 1.2.4 Gravity haulage 1.3 Safety devices used on rope haulage system 1.3.1 Stop block/Buffers 1.3.2 Back stay 1.3.3 Monkey catch 1.3.4 Age craft Device 1.3.5 Runaway Switch 1.3.6 Drop Warwick 1.4 Locomotive Haulage different types / Applicability 1.4.1 Diesel locomotive 1.4.2 Electric locomotive 1.4.3 Air compressed locomotive 1.4.4 Battery locomotives. 1.5 Definition of draw bar pull, Ideal gradient, Super elevation 1.6 Different Types of Conveyor 1.6.1 Chain conveyor 1.6.2 Plate conveyor 1.6.3 Belt conveyor 1.6.4 Condition of Suitability of each type 1.6.5 Advantageous and disadvantages 1.7 Introduction to Arial Ropeways
Unit - 2	WINDING IN SHAFT 2.1 Purpose of Winding 2.2 Main equipments used for Winding 2.2.1 Head gear 2.2.2 Headgear pulley 2.2.3 Cage/Skip 2.2.4 Winding Rope 2.2.5 Winding drum 2.2.6 Guides 2.2.7 Keps 2.2.8 Suspension Gear 2.3 Different types of winding 2.3.1 Drum winding 2.3.2 Koepe Winding 2.4 Drum winding different types 2.4.1 Cylindrical drum 2.4.2 Conical drum 2.4.3 Cylindroconical drum 2.4.4 Bicydroconical drum 2.5 Provisions on winding drum 2.5.1 Flanges 2.5.2 Depth indicator 2.5.3 Mechanical Brakes (different types) 2.5.4 Automatic Contrivance 2.6 Angle of fleet 2.7 Guides different types 2.7.1 Rigid guides 2.7.2 Flexible cable 2.8 Causes of cage oscillation 2.9 Cage suspension Gear Rope Capel 2.9.1 D link and bull chain 2.9.2 Safety hook 2.9.3 Triangular distribution plate 2.9.4 Bridle chain 2.10 Different types of keps 2.10.1 Rigid keps 2.10.2 Davies improved keps gear. 2.11 List of safety devices used in winding. 2.12 Characteristics curves 2.13 Smooth winding cycle 2.14 Koepe winding
Unit - 3	MINE PUMPS 3.1 Sources of water in Mines 3.2 Classification of Mine Pumps 3.3 Reciprocating Pump 3.3.1 Single acting 3.3.2 Double acting 3.3.3 Ram pumps 3.4 Centrifugal Pumps 3.4.1 Turbine Pumps 3.5 Installation of pump 3.6 Operation of pump 3.7 Fitting on pump 3.8 Starting and stopping of pump 3.9 Face pumps 3.10 Characteristics Curves of Centrifugal and turbine pumps. 3.11 Calculations for pump discharge etc. 3.12 Snoring of pump, its prevention. 3.13 Water hammer.
Unit - 4	COAL CUTTING MACHINE 4.1 Purpose of coal cutting machine 4.2 Classification of coal cutting Machine. 4.3 Different types of cut 4.4 Different parts of CCM 4.5 Cutting gear arrangements of chain 4.6 Introduction of continuous miner 4.7 Different types of mechanical Loaders.
Unit - 5	ELECTRIC POWER SUPPLY 5.1 Types of cables used in mines 5.2 Permanent cable Different types, construction 5.3 Semi flexible cable Different types, construction 5.4 Flexible cable Different types, construction 5.5 Screening of cable 5.6 Cable joint box 5.7 Repair of cable 5.8 Bleeding of cable 5.9 Cable care and maintenance during Use and storage
Unit - 6	GATE END BOX 6.1 Construction of gate end box 6.2 Safety provision in gate end box 6.3 Pilot Circuit 6.4 Different circuits for protection

MT20 : MINE ENVIRONMENT & SAFETY ENGINEERING

Mine Environment & Safety Engineering
Unit - 1	MINE FIRES  1.1 Surface fire and underground fires, their causes, detection and prevention. Classification of fires, Portable fire extinguishers their applicability, places of portable fire extinguishers in mines, maintenance of fire extinguishers. 1.2 Spontaneous heating: Mechanism of spontaneous Heating, factors governing spontaneous heating, methods for study of spontaneous combustion of coal: crossing point method. Stages of spontaneous heating, Detection of spontaneous heating: Physical or sensory indicators, Precautions for prevention of spontaneous heating. 1.3 Model standing orders in event of fire. 1.4 Dealing with spontaneous heating & fires: Various methods, Sealing off: selection of site for fire stoppings, construction of fire stopping, fittings to stopping, inspection and maintenance of fire stoppings.
Unit - 2	SAMPLING OF MINE ATMOSPHERE & INTERPRETATION 2.1 Sampling from sealed off area: Sampling line, Methods of sampling from behind the fire stopping, frequency of sampling. 2.2 Sampling accessible places: water, air displacement method, evacuated sample holder type. 2.3 Composition and behavior of gases in sealed off area, interpretation regarding condition of heating: Graham’s ratio; interpretation regarding explosibility: Cowards Diagram. Elementary knowledge of gas chromatography. 2.4 Reopening of sealed off area: Factors governing decision of reopening, methods of reopening, selection of methods of reopening, precautions to be taken while reopening.
Unit - 3	FIRE DAMP EXPLOSION 3.1 Introduction, Composition of firedamp Modes of emission of Firedamp, Degree of gassiness, methane layering. 3.2 Mechanism of fire damp explosion, Flammability of firedamp, lower and upper limit of explosibility of firedamp, factors governing limits of flammability, lag on ignition. Explosive limits of other flammable gases. 3.3 Causes of fire damp explosion and its prevention. Characteristic of firedamp explosion
Unit - 4	COAL DUST EXPLOSION 4.1 Mechanism of Coal Dust explosion, Flammability limits of coal dust, factors governing explosibility of coal dust, Characteristics of coal dust explosion. 4.2 Causes of coal dust explosion, Prevention of coal dust explosion. 4.3 Generalized stone dusting, Quantity of stone dust, Types and properties of stone dust, stone dusting plan. 4.4 Stone dust barriers, types of stone dust barriers, specifications and construction, location of primary and secondary types of barriers. Situations under which barrier may fail, maintenance and care of stone dust barriers. Water barrier, Triggered barrier.
Unit - 5	INUNDATION 5.1 Surface and underground causes of Inundation and its prevention. 5.2 water dams, bulkhead doors. 5.3 Procedure of and precaution while approaching old water logged areas, pattern of bore holes, 5.4 Dewatering, burn side safety boring apparatus. 5.5 Standard of lighting in underground & opencast mines, cap lamps, its construction, maintenance and care, cap lamp room
Unit - 6	MINE RESCUE 6.1 Introduction, classification of mine rescues apparatus, modern self contained breathing apparatus BG 174, its construction, application and scope. Common tests of self contained compressed oxygen breathing apparatus. 6.2 Chemical oxygen self-rescuers, gas mask, filter self-rescuers: their construction, application and limitations. Fresh air hose type breathing apparatus. 6.3 Fresh air base: location, personnel & equipments required. Layout of FAB. 6.4 Resuscitation, Modern reviving apparatus