about
success
story
Chandan Chaman
MANAGER(M)
GAYATRI UG
MINE
UNDERGROUND
MINING TECHNOLOGY
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SHARE OF COAL IN GLOBAL ENERGY BASKET
• Coal fulfils around 30% of global primary energy
needs.
• Generates over 40% of the world’s electricity.
• Used in production of 70% of the world’s steel.
• India is the third largest coal producer in the world
after China and USA
• In India, coal is currently the prime source of energy
as it provides about 52% of the commercial energy
and about 67% of the electricity generation is coal
based
• Around 60% of the world’s coal production comes
from underground mines
• The proportion of coal production from
underground coal mines varies widely in various
countries.
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0
20
40
60
80
100
CHINA SOUTH
AFRICA
USA AUSTRALIA INDIA
Series1 95 50 33 20 8
SHARE OF PRODUCTION FROM UG MINES
0
100
200
300
400
500
600
700
800
2012-13 2013-14 2014-15 2015-16 2016-17 2017-18 2018-19 2019-20 2020-21 2021-22
Opencast 504.195 516.116 560.667 592.882 613.518 633.569 686.214 690.393 683.872 745.007
Underground 52.207 49.649 48.512 46.408 44.350 41.831 43.504 40.481 32.211 33.183
TREND OF COAL PRODUCTION FROM
OPENCAST MINES AND UNDERGROUND MINES IN INDIA
Opencast Underground
It shows a gradual but consistent decline of coal production from underground mines.
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2
3
4
Limited shallow depth reserves amenable to opencast mining are
likely to be exhausted in foreseeable future (20-25 years) and the
production from opencast coal mines may reach a plateau.
The resulting shortfall in production due to exhaustion/closure of
open cast mine cannot be made up by conventional underground
mining
As gestation period is generally more in case of underground
projects, hence we have to start our planning well in advance.
Huge land requirement, Rehabilitation, re-settlement is huge social
challenge. ESG compliance getting tougher day by day
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02
01
POWER SUPPORT
LONGWALL
First endeavor for mechanization
was in 1978, with the
deployment of Power Support
Longwall (PSLW) technology in
Moonidih, BCCL.
No. of operational PSLW
face - 4
CONTINUOUS MINER
The first fully mechanized Bord
and pillar system using
continuous miner technology
started its operation in 2002 at
Chirimiri, Anjan hill mine at SECL.
No. of operational CM pckg
- 31
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Rated Capacity of
Mine (MTPA)
No. of mine
Av. annual
production per
mine
< 0.30 88 0.10
0.3 - 0.6 28 0.43
0.6 - 1.0 9 0.78
1.0 - 4.0 4 1.90
> 4.0 1 4.20
1.96
6.62
20.62
4.8
13.81
19.33
0.00
5.00
10.00
15.00
20.00
25.00
Longwall Continuous Miner Conventional B&P
PPRODUCTION
(in
MT)
TECHNOLOGY WISE PRODUCTION FROM UG
MINES OF COAL INDIA LIMITED
FY2019-20 FY 2023-24
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about
history
timeline
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 More than two decades of successful operation of Continuous Miner.
 CM technology has proved itself for both development and depillaring
operation.
 Proven technology for mass production in Indian geo-mining condition.
 Significant indigenous expertise has developed in past two decades for
O&M of CM package.
 Stakeholders are ready to operate mine as MDO (Mine developer cum
operator) and TPO (Technology provider cum operator)
 Indigenous equipment still not developed.
 As on date 31 CM packages are operative in India through different
mining contractors.
JMS Mining – 15 Gainwell – 05 GMMCO – 02 CMAT – 01 SMS – 01
TMC – 02 Aurobindo – 01 Joy Global – 01

Continuous Miner (1 Nos)
Approx cost : Rs. 30-35 Cr.
Major Manufacturer
Komatsu, Sandvik, Caterpillar,
Eickhoff, JAE, CODCO
Batch Haulage system (2 nos)
Approx cost : Rs. 15 Cr.
Major Manufacturer
Shuttle car (Komatsu, Sandvik, Philips, JAE)
Battery Hauler (Komatsu)
Ram Car ( Caterpillar)
CM
PACKAGE
Approx 110 cr
Roof Bolter (2 Nos)
Approx cost : Rs. 10 Cr.
Major Manufacturer
Komatsu, Sandvik, Rham, JD
Feeder Breaker (1 Nos)
Approx cost : Rs. 15 Cr.
Major Manufacturer
Komatsu, Sandvik, FLSmidth,
Ontrack
Load Centre (1 Nos)
Approx cost : Rs. 5 Cr.
Major Manufacturer
Ampcontrol, Allenwest, IE Corp,
Baldwin & Francis
LHD (1 Nos)
Approx cost : Rs. 1 Cr.
Major Manufacturer
Eimco Elecon, Simplex

Continuous Miner - CM 2H-45
Specification
Machine Weight 83 t
Ground Pressure 200 kPa
Tramming Speed 8-25 m/min
Min. Tramming height 1480 mm
Min. cutting height 1.6 m
Cutting width 3.65 m
Max. cutting height 4.60 m
Loading rate 30 t/min
Drum Diameter 1.2 m
Drum Speed 48 rpm
Supply Voltage 1140 V
Total installed power 655 kW
Make : Eickhoff GmbH, Germany
Model : CM 2H-45

Trailing cable Shuttle car
Make : Phillips Machine service, Inc. , USA
Model : HC 14 B
Specification
Machine Weight 23 t
Ground Pressure 9.49 kg/cm2
Tramming Speed 8-25 m/min
Chassis Width 3581 mm
Chassis height 1139 mm
Chassis length 9042 mm
Load end height 982 mm
Rated capacity 15 T
Tramming Speed (Empty) 9.6 kmph
Tramming Speed (Full) 8.5 kmph
Full time 4-wheel drive / 4-wheel
steering

Roof Bolter
Make : Rham Equipment Pty. Ltd. ,South Africa
Model : TB 2245
Specification
Machine Weight 28 t
Ground Pressure 9.49 kg/cm2
Tramming Speed 8-25 m/min
Chassis Width 2880 mm
Height (Extended) 4600 mm
Length 8554 mm
Gradability 25°
Drill Speed 450 rpm
Supply Voltage 1140 V
Motor 75kW
Drill Thrust 5-8kN
Drill penetration 2-4 m/min
Bolt torque <300Nm

Feeder Breaker
Make : M/s. Ontrak Engineering Pvt. Ltd.,
Australia, Model : OFB-1212
Specification
Machine Weight 30 t
Operational max output 600tph
Hopper capacity 12-14m3
Chassis Width 2850 mm
Height 1500 mm
Length 11054 mm
Max operating grade 1:8
Breaker drum diameter 650 mm
Conveyor width 1000mm
Conveyor speed 30m/min
Supply Voltage 1140 V
Motor 75kW x 2
Traction power 30kN per side

Power Distribution System
Make :M/s Ampcontrol UK Ltd., UK
Model : AW2000/T3A

Specification
8 Dedicated Drives for 1100 V and 2
Drives for 550 V
Equipped with HV side VCB and then
separate MCCB for 1100 V and 550 V
Every Drive is powered by separate
chassis which is controlled by Relay.
Every Drive can be set for different
parameters like E/L levels, delay times,
Overload trip, and so on.
Power consumption monitoring is on
board.
Equipped with Protection Card which can
be updated by USB.
Power Distribution System

TYPICAL LAYOUT OF FIVE HEADING CM PANEL

AIDA Sales
PROVEN TECHNOLOGY READY FOR ADOPTION
MAN RIDING SYSTEM
Chair lift system, Free steered Vehicles, Mono Rail based man
riding system
1
MULTI UTILITY VEHICLE
Free steered Diesel/ Battery Operated vehicles, Mobile Lift and
carry vehicles, Mobile Maintenance Van
2
TELE-MONITORING SYSTEM & VENTILATION ON DEMAND
Tele-monitoring system for monitoring of mine environment
parameters on real time.
3
CONVEYOR BELT
Belt Condition Monitoring system for identifying surface features
of conveyor belts, i.e. splices, tears and edge deformations.
4
ACTIVE PASTE FILL TECHNOLOGY
Paste fill gains quick strength within two to three hours with
ultimate strength of 30 to 50 Mpa
5

MAN RIDING
SYSTEM

MULTI UTILITY VEHICLE

AIDA Sales
VENTILATION ON DEMAND
Ventilation on demand (VoD) systems employ sensors around the mine that
transmit real-time data on key parameters such as equipment in use,
personnel, and information from gas, flow, and temperature sensors to a
central control system, enabling mine-wide control of fans and air regulators.
Mine is equipped with automated regulators.
VoD systems learn and adapt over time with more data available, intelligently
adjusting and optimizing air flow to maximize air quality and minimize
consumption. In addition, potential problems are identified more quickly and
blast gases are evacuated faster, decreasing downtime. By controlling mine
ventilation in this way, annual energy savings of up to 50% are possible.

+ SAFETY & RESCUE +
REFUGE CHAMBER

+ SAFETY & RESCUE +
RESCUE VAN

+ SAFETY & RESCUE +
FIRST AID STATION

01 ARTIFICIAL
INTELLIGENCE
They use smart data
and machine learning
to improve
operational efficiency,
mine safety and
production work flow.
02 INTERNET
OF THINGS
Fleet management &
tracking
Equipment health
monitoring
Exchange of data on
real time
DIGITAL AS ENABLER
TO UNLEASH INDIA’S
MINING POTENTIAL
03
Autonomous Vehicle
Automated drones for
safety surveillance, stock
pile measurement, site
mapping etc
AUTOMATION 04
Digitized engineering
and asset information
DIGITAL
TWIN

ECO
SYSTEM
FOR
FUTURE
MINING

THANKS
chandanchaman@gmail.com