Transcript event_8-8-2-50058b711894a

सी एम पी डी आई
एक ममनि रत्ि कंपिी
Cmpdi
(A Miniratna company)
New Technology and Challenges for
Underground Coal Mining
B.N. Basu
Director (CRD)
CMPDI
Coal Production from underground
Coal Mines
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Coal mining is carried out by
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Surface or ‘opencast’ mining
Underground or ‘deep’ mining
Around 60% world coal production comes from
underground mining
India emerged as the largest coal producer in the
world after China and USA, producing about 9% of
the total global production
From U/G China USA and India produce about 95%,
33% & 10% respectively
Trend Coal Production from CIL mines
(1974-75 to 2011-12)
500.00
70.00
450.00
60.00
50.00
350.00
300.00
40.00
250.00
30.00
200.00
150.00
20.00
100.00
10.00
50.00
Year
TOTAL
OC Mines
20
10
-1
1
20
00
-0
1
20
02
-0
3
20
04
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5
20
06
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7
20
08
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9
19
96
-9
7
19
98
-9
9
19
92
-9
3
19
94
-9
5
19
88
-8
9
19
90
-9
1
19
84
-8
5
19
86
-8
7
0.00
19
80
-8
1
19
82
-8
3
0.00
19
74
-7
5
19
76
-7
7
19
78
-7
9
Coal Production
400.00
UG Mines
Different Mining Methods used in CIL
UG mines
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Conventional Bord & Pillar (B&P) system with manual loading
of coal onto tubs.
Semi-mechanised B&P system with loading by Side Discharge
Loaders (SDLs) or Load Haul Dumpers (LHDs) or mechanised
drilling by Universal Drilling Machines (UDMs).
Mechanised Bord & Pillar/ Room & Pillar system with
Continuous Miners (CMs).
Mechanised Powered Support Longwall (PSLW) mining
system.
Methods with hydraulic stowing technology in conjunction with
sand or alternative filling.
Special methods (i.e. site specific methods), like Blasting
Gallery (BG) method, Cable bolting method, wide-stall method,
steep mining methods, etc.
Technology-wise Underground Coal
Production in CIL (2011-12)
0.32, 1%
1.79, 5%
0.18, 0%
3.54, 9%
0.15, 0%
0.1, 0%
32.31, 85%
B&P Intermediate technology
Roadheader (LW Dev.)
PSLW
Highwall Mining
Continuous Miner
Conventional B&P (& Others)
Shortwall (in B&P)
Application of Mass production
Technologies
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Continuous Miner Technology (Bord/Room &
Pillar)
Powered Support Longwall Technology
Continuous Miner technology
presently in operation in CIL mines
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Jhanjra, ECL – Joy Continuous Miner
Sarpi, SECL – Joy Continuous Miner
Tandsi, WCL - Joy Continuous Miner
Kumberkhani, WCL- Sandvik LCCM
NCPH, Chirimiri, SECL- Joy Continuous Miner
Sheetaldhara-Kurja, SECL- Bucyrus Continuous
Miner
Pinoura, SECL- Bucyrus Continuous Miner
Rani Atari- Sandvik LCCM
Continuous Miner technology
proposed in CIL mines
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Jhanjhra, ECL- MOU has been signed
Tilaboni, ECL - Under tendering
Kottadih, ECL- Under tendering
Block-II, BCCL- LOA has been issued
Lohapatti, BCCL- Bids under scrutiny
Saoner-I,WCL- Under re-tendering
Churcha, SECL- LOA has been issued for two sets
Continuous Miner
Shuttle Car & Quad Bolter
Proposed Power Support Longwall
Technology (PSLW) in CIL mines
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Jhanjhra, ECL- Agreement has been signed
Moonidih seam XVI, BCCL- Bids under scrutiny
Moonidih seam XV, BCCL- LOA has been
issued
Muraidih, BCCL- Agreement has been signed
with L1
Kapuria, BCCL- LOA has been issued
Shearer working at Longwall face
Shearer Drum
Powered Roof Supports (Two Legged)
Challenges of Underground
Mining in CIL mines
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UG operations at shallow depth has given way to quarry or surface
mining
Closure of number of underground mines due to exhaustion of coal
reserve or losses
Reduction or stagnation in production due to attrition of workforce or
natural retirement
Reduced production and productivity due to old, long & arduous mines
Low technological, R&D or skill-development input in underground
mines
A number of underground mining operations or processes involve
human effort or drudgery
Low productivity of manpower
Geological disposition and exploration of coal seams has also affected
indirectly
Other Constrains and challenges in
U/G Mines
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Size of the Mine / block
Geological Complexities and Exploration
Mine Approach & Development : high gestation period
Technological Development & Implementation
Absorption of Technology – Skill development
Strata Management & Control
Mechanization – Productivity Enhancement Needs
Equipment Supply & Maintenance – Vendor Development
Long & Arduous Travel / tramming routes – Man-riding /
Material Supply
Mining hazards
Technological Gap – Focus on Specific R&D
Renewed Focus on Underground
Mining
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Aiming from 10% to 30% coal production by 2030
Introduction of Mass-production Technology in
large scale
Sharing of specific technology with other
countries
Focusing on Specific R&D projects
Alternative Underground Coal Mining
Technologies
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Underground Coal Gasification
Coal bed Methane