panchpatmali bauxite mine, nalco
TRANSCRIPT
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PANCHPATMALI BAUXITE MINE,
NALCO
RECLAMATION AND REHABILITATION
OF
MINED OUT AREA
AT PANCHPATMALI BAUXITE MINE OF M/S NALCO
-A CASE STUDY
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BRIEF DETAILS OF THE MINE
PANCHPATMALI BAUXITE MINE OF NALCO IS THE ASIA’S
LARGEST BAUXITE MINE.
A CAPTIVE BAUXITE MINE FOR SUPPLY OF BAUXITE ORE TO
ALUMINA REFINERY OF NALCO .
THE MINE COMMISSIONED IN THE YEAR 1986-87.
THE PRESENT PRODUCTION CAPACITY OF THE MINE IS 6.825
MIL TON PER YEAR .
LOCATED OVER PANCHPATMALI HILL IN KORAPUT DISTRICT
OF ODISHA.
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North Block
Central Block
N
S
Present Working area
CB Sec-II: Bxt Reserve - 63.31 Mil
Ton (Cut off +20% Al2O3, SiO2: - 7%)
CB Sec-I: Exhausted
NB-I:Bxt Reserve-46.74 Mil Ton (Cut off +20% Al2O3, SiO2: - 7%)
NB-II: Bxt Reserve-17.29 Mil Ton
(Cut off- +20% Al2O3 , SiO2: -7%,
as on 31.03.2016)
SMCP
FLDC
Cable belt conveyor
To Alumina Refinery, Damanjodi
Approach Road to Mine
Back filled/ Reclaimed
FMG
Common ML Boundary
Central Block
Primary Crusher
house
Back filled/ Reclaimed
Admn Building
Panchpatmali Bauxite Deposit
South Block: Bxt Reserve- 82.05 Mil Ton
(Cu off +20% Al2O3,
SiO2: - 7%)
Explosive Magazine
Total Bxt. Reserve- 317.72 Mn T •Consumed : 107 Mn T (till 31st March 2016) •Left Out reserves( mineble ) after IBM Guideline :210.72 MT (as on 31st March 2016)
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LEASE DETAILS
LEASE NAME LEASE VALIDITY TOTAL AREA
(HA)
FOREST AREA
(HA)
NON-
FOREST
AREA
(HA)
CENTRAL AND
NORTH BLOCK
16-11-2032 1315.264 1294.283 20.981
SOUTH BLOCK
19-07-2029 528.262 189.552 338.71
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ENVIRONMENTAL SETTING
L O C AT I O N - 1 1 0 0 M a b o v e M S L T O 1 2 6 6 M
a b o v e M S L ,
3 0 0 M A B O V E S U R R O U N D I N G
V A L L E Y A R E A .
TEMPERATURE- WINTER- (70C TO 300C), SUMMER UPTO 400C
AVERAGE YEARLY RAINFALL- 1600-1800 MM
WIND SPEED- 15 KM/HOUR (AVG.), SW-NE
HUMIDITY 40% TO 90%
PRE MINING VEGETATION GRASS & HERBS (No Tree Growth)
LOCATION OF SENSITIVE ZONES
LIKE RESERVE FORESTS,
SANCTUARIES ,ETC.
NOT WITH IN 100KM RADIUS OF THE MINE
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6
FULLY MECHANIZED,
OPEN CAST MINE
(CAPTIVE USE)
CAPACITY- 68 .25
LAKH TPY OF
BAUXITE ORE
CERTIFIED UNDER
ISO 9001 , ISO14001,
OHSAS 18001&
SA 8000
FEATURES OF PANCHPATMALI
BAUXITE MINE
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Key parameters
Top soil - 0 - 1 mtr.
OB thickness - 2 - 4 mts.
Bxt. thickness -14 mtr. Avg.
Soil Laterite
Bauxite
PLK
CROSS-SECTIONAL VIEW OF PANCHAPATMALI
BAUXITE DEPOSIT
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O V E R B U R D E N ( TO P S O I L & A L U M I N O U S L AT E R I T E )
S T R I P P I N G
BAUXITE EXCAVATION IN TWO PHASES
(TOP BAUXITE & BOTTOM BAUXITE)
SIZE REDUCTION BY PRIMARY CRUSHERS FROM BAUXITE LUMPS OF
MAX 1 M X 1M X 1M SIZE TO -150 MM SIZE AND IN-PIT
TRANSPORTATION THROUGH A BELT CONVEYOR
TRANSPORTATION OF CRUSHED BAUXITE (MAX. LUMP SIZE -150 MM)
TO ALUMINA REFINERY PLANT THROUGH CABLE BELT CONVEYOR
SYSTEM
RECLAMATION & REHABILITATION OF THE MINED OUT AREA BY USE
OF LATERITIC OVERBURDEN AND TOP SOIL. FOLLOWED BY
PLANTATION
PROCESS OF MINING AT
PANCHPATMALI BAUXITE MINE
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A B
C
E
F
G
Land
reclamation
and
plantation
SITE
OFFICE
DIFF.TRENCHES
SUMP
CENTRAL HAUL ROAD
LAND RECLAMATION
TDS BUILDING
FMG
CENTRAL HAUL
ROAD WITH
WATER
SPRINKLING
AND
ILLUMINATION
N
\
PERIFERAL
BARRIERS
Method of Mining : Schematic View of Trench Mining
9
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TOP BAUXITE
MINING
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RIPPING
&
DOZING
IN TOP
BAUXITE
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BOTTOM
BAUXITE
MINING BY
BACKHOE
EXCAVATOR
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MINED OUT
AREA
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TWIN 900 TPH PRIMERY
CRUSHERS
One 900 TPH semi-mobile crusher with 4.5 km long conveyor to main crusher
Fully covered 14.6 km long single flight cable belt conveyor from mine to Alumina Refinery plant
CRUSHING AND
CONVEYING SYSTEM
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THE CONCURRENT MINED OUT AREA
REHABILITATION PLAN HAS GOT THE FOLLOWING
FIVE COMPONENTS-
• BACK FILLING OF MINED OUT AREA WITH DUMPING OF LATERTIC
OVER BURDEN
• DOZING & LEVELLING OF DUMPS TO FORM BENCHES ( 1M TO
4M)AND TERRACES.
• DUMPING AND SPREADING OF TOP SOIL IN THICKNESS OF 0.3Mtr.
• AFFORESTATION WITH SUITABLE PLANT SPEICES.
• MAINTENANCE OF THE PLANTATION( WITH SOIL WORKING &
APPLICATION OF MANURE , FERTLIZER .INSECTICIDES &
PESTICIDES) FOR THREE YEARS INCLUSIVE OF YEAR OF
PLANTATION.
• WATCH & WARD COVERAGE FOR ENTIRE PLANTATION .
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THE AFFORESTATION PLAN IS PREPARED KEEPING IN VIEW
THE FOLLOWING OBJECTIVES
TO PROVIDE A GREEN BELT AROUND THE PERIPHERY OF
THE MINING AREA TO COMBAT THE DISPERSAL OF DUST &
NOISE IN THE ADJOINING AREAS.
PROTECT THE EROSION OF THE SOIL.
CONSERVE MOISTURE FOR INCREASING GROUND WATER
RECHARGING.
RESTORE AESTHETIC BEAUTY OF THE LOCALITY.
AFFORESTATION PROGRAMME
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BACK FILLING
OF MINED
OUT AREA
WITH
LATERITIC
OVER
BURDEN.
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SPREADING
OF TOP
SOIL
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SPECIES SELECTED FULFIL THE FOLLOWING SPECIFIC
REQUIREMENTS OF THE AREAS:
1. AVAILABILITY OF SEED MATERIAL.
2. CAPACITY TO ENDURE WATER STRESS AND CLIMATIC
EXTREMES
3. ADAPTABILITY & RATE OF GROWTH.
4. CANOPY FOR SHADES AND FRUITS.
CRITERIA FOR SELECTION OF SPECIES
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PLANTATION
SUPPORT GIVEN
BY A HIGH
ALTITUDE
NURSERY:
AREA-3 ACRES
CAPACITY-
2,00,000
SEEDLINGS PER
ANNUM
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PITTING PRIOR TO PLANTATION
PIT SIZE-
30CMX 30 CM X60CM
SPACING -2.5 M
DENSTY -2500 PITS PER HA
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PLANTATION CARRIED OUT BY PANCHPATMALI
BAUXITE MINE
A) AREA
PLANTATION IN BACK FILLED AREA
PLANTATION OVER PERIPHERAL BARRIER
PLANTATION OVER VACCANT SPACES IN HILL SLOPES
PLANTATION IN CONVEYOR CORRIDOR & ALONG MINE
ACCESS ROAD .
B) DOMINATING PLANT SPECIES
SILVER OAK
ACACIA
KARANJ
PINE
BAMBOO
ROSE APPLE
JAMUN
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IMPLEMENTATION OF
PROGRESSIVE MINE CLOSURE
PLAN ( STATUS AS ON 30.11.2016)
LEASE
AREA
(HA)
OPENED
UP
AREA
(HA)
RECLAIMED AND
REHABILITATED
AREA
(HA)
AREA UNDER
ACTIVE MINING
INCLUSIVE OF
PERMANENT
HAUL ROADS
(HA)
1315.264
472.77 295.64 177.13
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PLANTATION IN BACKFILLED AREA WITH
THE PERMANENT HAUL ROAD
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PINE PLANTATION IN RECLAIMED AREA
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JAMUN PLANTATION IN
RECLAIMED AREA
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AVENUE PLANTATION ALONG
MINE ACCESS ROAD
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SILVER OAK PLANTATION ON
PERIPHERAL BARRIER
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ACACIA PLANTATION OVER VACANT
SPACES ON HILL SLOPES
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DISTRIBUTION OF
SEEDLINGS TO VILLAGERS
TO CREATE GREEN BELT
AROUND THE MINE
(11,100 nos distributed during 2016-17)
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LAND SCAPING SHOWING ADMN.BUILDING OF
PANCHPATMALI BAUXITE MINE IN THE
BACKGROUND
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DETAILS OF PLANTATION CARRIED OUT BY PANCHPATMALI
BAUXITE MINE SINCE INCEPTION
TOTAL AREA
COVERED
(IN BACK FILLED
AREA, PERIPHERAL
BARRIER AND HILL
SLOPES)
TOTAL
PLANTATION
IN MINED OUT
AREA
TOTAL PLANTATION
OUTSIDE MINING
AREA
TOTAL
PLANTATION
1088.94
HA
11,22,709
NOS
21,82,745
NOS
33,05,454
NOS
-OVERALL SURVIVABILITY- APPX. 70%
-GAP FILLING IS USUALLY CARRIED OUT TO IMPROVE THE
DENSITY OF PLANTS
(STATUS AS ON 30.11.2016)
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EXPENDITURE INCURRED TOWARDS LAND RECLAMATION
& PLANTATION
COST OF PLANTATION PER TON OF BAUXITE PRODUCTION
DEPENDS ON THE FOLLOWING FACTORS;
BAUXITE PRODUCTION ACHIEVED DURING THE FINANCIA L
YEAR
OPERATING AND MAINTENANCE COST OF HEAVY EARTH
MOVING EQUIPMENTS
THCKNESS OF THE DEPOSIT AND AREA AVAILABLE FOR
LAND RECLAMATION AND PLANTATION
THE COST OF PLANTATION VARIES BETWEEN RS10 TO RS 15
PER TON OF BAUXITE PRODUCED .
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ROSE APPLE
PLANTATION
JAMUN
PLANTATION
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GUAVA
PLANTATION
PINE
PLANTATION
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GRASS TURFING ON
SLOPES TO PREVENT
SOIL EROSION
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SUSTAINING ECOSYSTEM BY PROVISION OF
WATER HARVESTING STRUCTURES
CONSTRUCTION
OF PONDS AND
SEDIMENTATION
BASIN WITHIN
MINE AREA
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LAND BEFORE AND AFTER MINING
BEFORE AFTER
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AWARDS FOR ENVIRONMENT PROTECTION
& PLANTATION
o INDIRA PRIYADARSHINI
VRKSHAMITRA AWARD BY
MOEF&CC – 1994
o POLLUTION CONTROL
EXCELLENCE AWARD BY
SPCB,ODISHA-1998
o GEM GRANITE ENVIRONMENT
AWARD BY FIMI-2013
o SITARAM RUNGTA SOCIAL
AWARENESS AWARD BY FIMI-2014
o POLLUTION CONTROL
EXCELLENCE AWARD BY SPCB,
ODISHA-2015
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41
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EXPENDITURE INCURRED TOWARDS LAND RECLAMATION
& PLANTATION IN LAST 3 YEARS
Sl. No Activity 2013-14 2014-15 2015-16
1. Backfilling and land
reclamation (Rs)
10,53,57,667 8,12,73,516 5,21,25,970
2. Plantation and
Horticulture(Rs)
57,48,011 56,73,359 66,90,762
3 Production (MT) 62,92,677 57,39,120 63,40,142
4 Expenses (Rs) / Tonne of
bauxite produced
17.66 15.15 9.28