SlideShare a Scribd company logo
HIGH WALL MINING
   TECHNOLOGY


         CHANDAN CHAMAN
Highwall miner @ site
What is HIGHWALL Mining
Mining Coal from

   a visible, horizontal or inclined coal seam, making
   rectangular, parallel, unsupported entries, with
   unmanned cutter head and coal transport system, which
   is remotely controlled from a
   mining unit positioned outside the drive, in front of highwall.
When to Highwall Mining
•   When economic strip limits are reached.
•   When strip limits are reached by surface conditions.
•   Extend operational life of mine
•   Transition from surface mining to underground mining
•   Specific Highwall Mining situations
     Contour Mining
     Open Cast Mining
     Trench Mining
     Augered seams
Advantage of Highwall Mining
COST : Highwall mining is clearly cheaper, due to the lower
establishment and development costs. No in-seam support or
transport systems are required, the cost of ventilation measures
is negligible and the capital cost is a fraction of that of a
longwall.

FLEXIBILTY : Highwall mining can economically access smaller
blocks of coal and is more readily able to avoid geological
structures or other impediments to production. The mobility of
the highwall mining equipment makes it easy to move around a
pit, from pit to pit or from mine to mine.
Advantage of Highwall Mining
APPLICABILITY : Because it operates by remote control, highwall
mining equipment can work in thin seams without having to cut
stone to make height for people to move around, or it can
selectively extract a high-quality segment of a seam. The
equipment can operate on steeper dips than miners and shuttle
cars, and can mine multiple seams without subsidence.

SAFETY : Remotely controlled operations, so all personnel
remain outside the entries & therefore not exposed to
underground hazards such as roof falls, gas, dust, irrespirable
atmospheres, flooding, vehicle movements in confined
spaces, etc. With the use of ventilation or inert gas, highwall
mining can continue in gassy seam conditions that would stop or
impede underground mining.
Production & Productivity
PRODUCTION : Modern highwall mining equipment operate in
seam heights of 0.76 meter to 3.05 meter in one pass and seam
dips of up to 12 degrees. Coal production per machine ranges
from 0.5 million tons per year for low seams to 1.5 million tons
per year for high seams, in a continuous operation.

PRODUCTIVITY : Highwall mining requires fewer personnel can
produce 1.5 million tonne pa, compared to around 90 people (3
shifts) to get the same output from an underground mine.

When factoring the lower capital and labour costs of highwall
mining, the cost per tonne is much less than underground
mining.
Requirement for Highwall Mining
   Competent coal.
   Competent immediate overburden. If overburden is not
    competent, coal may be left as roof.
   Coal seams dipping from -12 to + 5 degrees.
   Relative flat seams, no faults
   Coal seams thicker than 80cm.
Web and Barrier Pillars
   Web pillars ensure support of OB
   Barrier pillars prevent cascading collapse
   Barrier pillar typically every 10 to 20 drives
   Calculation method to be approved by local Mine Safety
    Authorities.

    WEB PILLAR               BARRIER PILLAR
Cycle of Operation
• Seam is penetrated by a Continuous Miner propelled by a
  Hydraulic Pushbeam Transfer Mechanism (PTM).

• Cycle includes pushing forward, raising and lowering of the
  Cutter head boom to cut entire length of coal.

• Pushbeams of 6 m is placed between the cutter head and
  power head as depth of penetration increases.

• Using Video imaging and gamma detector, the Cutter head
  moves inside the seam and cuts only coal.

• All functioning is controlled from a touch screen panel
  located in operators cabin.
Indicative Recovery Rate
Safety Consideration
• Highwall Hazard
- Resulting from crushing of Pillar or Failures associated with
  insitu structures.
- Avoided by developing 2 Zones i.e. General Safety Zone and
  Vertical Drop Zone.
Safety Consideration
• Roof Span Collapse Hazard
- Successful and Safe Operation can be Achieved with Rapid
  Entry and Retraction. Otherwise HM Could Readily be
  Buried in Rock.
• Explosion Hazards
- To Minimize the Explosion FLP enclosure of Machinery
  and Instrumentation Entering the Highwall Drives.
  Methane Monitoring Equipments Installed.
Key Features
   Penetration upto 300 meters
   Dip +5 to -12 degrees
   Production up to 120,000 t / month
   Up to 75% seam recovery
   Operates with a 4 / 5 man crew per shift
   Personnel safety
   Low establish cost
   Lower production cost than underground
   No external contamination or product dilution.
DIMENSIONS

Length base     : 16.6 m

Width base      : 8.3 m

Weight miner    : 225 t

Length of push Beam : 6 m

Weight of push beam : 5150 kg

50 push beams per miner

Max. Push Force:
in: 136 t : out: 276 t
Cutter Head
                                 Low Seam Cutter Module
                                 Seam height : 75 cm to 1.50 m
                                 Width : 2.90 m




High Seam Cutter Module
Seam height : 1.20 m to 3.05 m
Width : 3.50 m
Push Beam
Pushing / Pulling cutter module

   Coal Convey modules
   Sturdy, simple, 2 moving parts only
   Enclosed -no External Contamination
   Low Ground Pressure
   Protect cables/hoses
   Structural rigidity that ensures
    mining in parallel drives

Inter-Connecting

   Horizontally rigid : Straight Drives
   Vertically hinged : Follow the seam
    undulations
Push Beam
Push beams are 6 m long , rectangular , reinforced steel box
structures joined together to form a string, which connects the
highwall mining system to the cutter assembly.

The push beam string is the backbone of the machine; pushing
and pulling the cutter module in and out of the highwall with
retract forces up to 363 tonnes (400 tons) at 345 bars.

 The push beams also transport mined coal and support the hose
chain that supplies control and power to the cutter.

Moving coal inside the push beam (via a pair of screw conveyors)
protects the coal from contamination and the moving
mechanical parts from rock debris, resulting in higher
availability.
Reel & Chain

   Power chain for cutter
    module
  o     Electrical cables
  o     Hydraulic lines
  o     Cooling water lines
  o     Methane sensor cable
  o     Control cables
 Hoses / cabling protected
    by steel plating
 Auto unwinds/winds in
    trough on push beams
 > 300 m
Anchoring System
 Stabilizes the Highwall Miner
 Two Machine mounted drills
 Two high strength 2.5 m pins
Controls
                            Operated from the cabin
                            Fully graphical touch screen
                            interface
                           Automated mining mode
                           Automatic seam following:
                            o Cutter motor current
                            o Gamma Ray Sensor (Optional)

    All machine diagnostics
    Accurate heading:
    o Precise alignment
    o FOG (fiber optic gyro) guided
    steering (Optional)
Generator

   By the grid       via   a
    transformer
   1500 kW Generator Set
   80 kW auxiliary set
   Build in a sound
    attenuated       20 ft
    container
   Mounted on tracks
   Tropical / Arctic version
Tracks

• 4 Hydraulically powered tracks
  articulate 90 degrees for straight
  and cross travel
• Circle mode for accurate heading
• Each track 1 meter vertical
  movement for adjusting seam dip
  and floor contour
• Turning of each track is achieved
  automatically
Mobility
   For quick relocation over long distances, the highwall
    mining system can be taken apart in modules.
   Rapid disassembly and reassembly is facilitated by
    convenient hydraulic and electrical connectors
   All modules are sized for transport using regular public
    roads
   Tracks for positioning in
    the mine, relative short
    distances.
   Longer distances on heavy
    weight special transport
    low loader.
On site Assembly
Safety Features
   Elevated cab with cameras
   Above-ground operation
   Small-crew size for its operation
   Remote operation
   Anchoring system
   Continuous monitoring of the methane by DGMS approved
    methane Sensors
   Intrinsically safe & fail safe in design
   Methane sensor device interlocked with PLC control system
Protection Against Methane
    Continuous monitoring of the methane by DGMS approved
     methane Sensors
    Intrinsically safe & fail safe in design
    Methane sensor device interlocked with PLC control system
    Power to UG will be “ON” only if:
     The Methane sensor is “ON” & Working properly
     Methane level is below 1.25%
    When Methane level:
     =0.8%    - Operator get audio-visual alarm
     >1.25% - U/G part of the machine will be powered “OFF
Optional Features of HM
   Push beam holding device for operation in seams dipping
    in access of 8 degrees
   Water pump on cutter module for operation in seams with
    ingress of big volumes of water.
   Inert gas system for operation in gaseous seams.
   Arctic and Tropical execution of the miner / genet.
   Second air-conditioned cabin for personnel working on
    push beam launch platform.
   Stacker belt for stockpiling mined coal.
Concluding…
Highwall Mining as a coal mining method :
- increases your mine-able reserves,
- mine coal cost effectively,
- with maximum safety
- with minimum risk,
that otherwise would be unrecovered.



BECAUSE RESOURCES ARE LIMITED
Highwall miner @ assembly line
THANK YOU


  chandanchaman@gmail.com

More Related Content

What's hot

LHD Load haul dump ppt
LHD Load haul dump pptLHD Load haul dump ppt
LHD Load haul dump ppt
guru brahmam
 
Mine Opening and Development
Mine Opening and DevelopmentMine Opening and Development
Mine Opening and Development
Anurag Jha
 
HIGH WALL MINING at SCCL - A Case Study
HIGH WALL MINING at SCCL - A Case StudyHIGH WALL MINING at SCCL - A Case Study
HIGH WALL MINING at SCCL - A Case Study
knowledge stuff
 
Blasting Gallery Method
Blasting Gallery MethodBlasting Gallery Method
Blasting Gallery Method
PrateekVerma111
 
Longwall mining
Longwall miningLongwall mining
Longwall mining
Shantanu Kumar
 
Inundation
InundationInundation
InundationVR M
 
depllaring in coal mines
depllaring in coal minesdepllaring in coal mines
depllaring in coal mines
akhilesh kumar gupta
 
Thin seam mining
Thin seam miningThin seam mining
Thin seam mining
Safdar Ali
 
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDLBord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
Ankit Narain
 
Longwall Mining
Longwall MiningLongwall Mining
Longwall MiningVR M
 
Design of Bord and Pillar method in coal mines
Design of Bord and Pillar method in coal minesDesign of Bord and Pillar method in coal mines
Design of Bord and Pillar method in coal mines
aashutosh chhirolya
 
Mining Machinery Learning Material
Mining Machinery Learning MaterialMining Machinery Learning Material
Mining Machinery Learning Material
Bhaskar Naidu
 
Board & Pillar
Board & PillarBoard & Pillar
Board & Pillar
Chittranjan Vaishnav
 
Different Raising Techniques in mining
Different Raising Techniques in miningDifferent Raising Techniques in mining
Different Raising Techniques in mining
Rishabh Ranjan
 
Differnt technologies in oc mines
Differnt technologies in oc minesDiffernt technologies in oc mines
Differnt technologies in oc minesSATYANARAYANA I
 
Continuous miner
Continuous minerContinuous miner
Continuous miner
Chandan Chaman
 
Shaft sinking.
Shaft sinking.Shaft sinking.
Shaft sinking.
Safdar Ali
 
Shaft sinking 2
Shaft  sinking 2Shaft  sinking 2
Shaft sinking 2
Er.Sunil Wasade
 

What's hot (20)

LHD Load haul dump ppt
LHD Load haul dump pptLHD Load haul dump ppt
LHD Load haul dump ppt
 
Mine Opening and Development
Mine Opening and DevelopmentMine Opening and Development
Mine Opening and Development
 
Surface miner
Surface minerSurface miner
Surface miner
 
HIGH WALL MINING at SCCL - A Case Study
HIGH WALL MINING at SCCL - A Case StudyHIGH WALL MINING at SCCL - A Case Study
HIGH WALL MINING at SCCL - A Case Study
 
Blasting Gallery Method
Blasting Gallery MethodBlasting Gallery Method
Blasting Gallery Method
 
Longwall mining
Longwall miningLongwall mining
Longwall mining
 
Inundation
InundationInundation
Inundation
 
depllaring in coal mines
depllaring in coal minesdepllaring in coal mines
depllaring in coal mines
 
Thin seam mining
Thin seam miningThin seam mining
Thin seam mining
 
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDLBord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
 
Longwall Mining
Longwall MiningLongwall Mining
Longwall Mining
 
Design of Bord and Pillar method in coal mines
Design of Bord and Pillar method in coal minesDesign of Bord and Pillar method in coal mines
Design of Bord and Pillar method in coal mines
 
Mining Machinery Learning Material
Mining Machinery Learning MaterialMining Machinery Learning Material
Mining Machinery Learning Material
 
Board & Pillar
Board & PillarBoard & Pillar
Board & Pillar
 
Different Raising Techniques in mining
Different Raising Techniques in miningDifferent Raising Techniques in mining
Different Raising Techniques in mining
 
Differnt technologies in oc mines
Differnt technologies in oc minesDiffernt technologies in oc mines
Differnt technologies in oc mines
 
Continuous miner
Continuous minerContinuous miner
Continuous miner
 
Rock burst presentation
Rock burst presentationRock burst presentation
Rock burst presentation
 
Shaft sinking.
Shaft sinking.Shaft sinking.
Shaft sinking.
 
Shaft sinking 2
Shaft  sinking 2Shaft  sinking 2
Shaft sinking 2
 

Viewers also liked

Topic 5: Mining Methods-Part I-Surface mining
Topic 5: Mining Methods-Part I-Surface mining Topic 5: Mining Methods-Part I-Surface mining
Topic 5: Mining Methods-Part I-Surface mining
Geology Department, Faculty of Science, Tanta University
 
HIGHWALL MINING-INDIAN SCENARIO (1)
HIGHWALL MINING-INDIAN SCENARIO (1)HIGHWALL MINING-INDIAN SCENARIO (1)
HIGHWALL MINING-INDIAN SCENARIO (1)Pushon Ghosh
 
Design and Performance of Highwall Mining
Design and Performance of Highwall MiningDesign and Performance of Highwall Mining
Design and Performance of Highwall Mining
Shantanu kumar
 
Highwall Mining Technology
Highwall Mining TechnologyHighwall Mining Technology
Highwall Mining TechnologyVR M
 
VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...
VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...
VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...
Piyush Dwivedi
 
SECL training presentation
SECL training presentationSECL training presentation
SECL training presentation
ravi8492
 
High volume production systems
High volume production systemsHigh volume production systems
CNC Machining Centres
CNC Machining CentresCNC Machining Centres
Coal Sccl
Coal ScclCoal Sccl
Coal ScclVR M
 
Lecture 4: Underground Mining
Lecture 4: Underground MiningLecture 4: Underground Mining

Viewers also liked (12)

Topic 5: Mining Methods-Part I-Surface mining
Topic 5: Mining Methods-Part I-Surface mining Topic 5: Mining Methods-Part I-Surface mining
Topic 5: Mining Methods-Part I-Surface mining
 
HIGHWALL MINING-INDIAN SCENARIO (1)
HIGHWALL MINING-INDIAN SCENARIO (1)HIGHWALL MINING-INDIAN SCENARIO (1)
HIGHWALL MINING-INDIAN SCENARIO (1)
 
Design and Performance of Highwall Mining
Design and Performance of Highwall MiningDesign and Performance of Highwall Mining
Design and Performance of Highwall Mining
 
Highwall Mining Technology
Highwall Mining TechnologyHighwall Mining Technology
Highwall Mining Technology
 
VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...
VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...
VOCATIONAL TRAINING FROM SECL , SOHAGPUR , KHAIRHA MINE , PPT (POWER POINT PR...
 
SECL training presentation
SECL training presentationSECL training presentation
SECL training presentation
 
Summer training report
Summer training reportSummer training report
Summer training report
 
High volume production systems
High volume production systemsHigh volume production systems
High volume production systems
 
CNC Machining Centres
CNC Machining CentresCNC Machining Centres
CNC Machining Centres
 
Coal Sccl
Coal ScclCoal Sccl
Coal Sccl
 
Mining methods
Mining methodsMining methods
Mining methods
 
Lecture 4: Underground Mining
Lecture 4: Underground MiningLecture 4: Underground Mining
Lecture 4: Underground Mining
 

Similar to Highwall mining

Highwall mining, a new approach in india revised
Highwall mining, a new approach in india  revisedHighwall mining, a new approach in india  revised
Highwall mining, a new approach in india revised
TIKESHWAR MAHTO
 
Bend Mahadev Marble Mines Salumber
Bend Mahadev Marble Mines SalumberBend Mahadev Marble Mines Salumber
Bend Mahadev Marble Mines Salumber
Suresh Dangi
 
Highwall Mining
Highwall MiningHighwall Mining
Highwall Mining
Anurag Jha
 
Road Header and Bolter Miner
Road Header and Bolter MinerRoad Header and Bolter Miner
Road Header and Bolter Miner
Ulimella Siva Sankar
 
Underground Mining Technology.pptx
Underground Mining Technology.pptxUnderground Mining Technology.pptx
Underground Mining Technology.pptx
Chandan Chaman
 
Training
TrainingTraining
Training
kulrao
 
BARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORK
BARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORKBARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORK
BARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORK
Milling and Grain magazine
 
Coal Handling Plant
Coal Handling PlantCoal Handling Plant
Coal Handling Plant
Ashrant Dass
 
Trenchless Technologies for New Pipe Installations
Trenchless Technologies for New Pipe InstallationsTrenchless Technologies for New Pipe Installations
Trenchless Technologies for New Pipe Installations
Loay Ghazaleh MBA, BSc Civil Eng.
 
Coal Mining Technlogy Brief_Low Coal Seam_HOT Mining
Coal Mining Technlogy Brief_Low Coal Seam_HOT MiningCoal Mining Technlogy Brief_Low Coal Seam_HOT Mining
Coal Mining Technlogy Brief_Low Coal Seam_HOT MiningSerena Fu
 
CONTINUOUS MINERS
CONTINUOUS MINERSCONTINUOUS MINERS
CONTINUOUS MINERS
Tauhid Mohammad
 
Auger Monster (JWC Environmental) - Modular Headworks System _ Ingles
Auger Monster (JWC Environmental) - Modular Headworks System _ InglesAuger Monster (JWC Environmental) - Modular Headworks System _ Ingles
Auger Monster (JWC Environmental) - Modular Headworks System _ Ingles
Vibropac
 
Gyromat in tunnelling practice
Gyromat in tunnelling practiceGyromat in tunnelling practice
Gyromat in tunnelling practice
Norbert Benecke
 
Highwall mining
Highwall miningHighwall mining
Highwall mining
Safdar Ali
 
Jumbo boart longyear
Jumbo boart longyearJumbo boart longyear
Jumbo boart longyear
EDWING HUAMANI SUICO
 
longwall mining
longwall mininglongwall mining
longwall mining
narendralamba3
 
Method of working of continuous miner in underground coal
Method of working of     continuous miner in underground coalMethod of working of     continuous miner in underground coal
Method of working of continuous miner in underground coal
Safdar Ali
 
Emag News 21 English
Emag News 21 EnglishEmag News 21 English
Emag News 21 English
Uli Kaiser
 
Up roughterrain
Up roughterrainUp roughterrain
Up roughterrain
tacettin ünlü
 
LTM 11200
LTM 11200LTM 11200

Similar to Highwall mining (20)

Highwall mining, a new approach in india revised
Highwall mining, a new approach in india  revisedHighwall mining, a new approach in india  revised
Highwall mining, a new approach in india revised
 
Bend Mahadev Marble Mines Salumber
Bend Mahadev Marble Mines SalumberBend Mahadev Marble Mines Salumber
Bend Mahadev Marble Mines Salumber
 
Highwall Mining
Highwall MiningHighwall Mining
Highwall Mining
 
Road Header and Bolter Miner
Road Header and Bolter MinerRoad Header and Bolter Miner
Road Header and Bolter Miner
 
Underground Mining Technology.pptx
Underground Mining Technology.pptxUnderground Mining Technology.pptx
Underground Mining Technology.pptx
 
Training
TrainingTraining
Training
 
BARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORK
BARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORKBARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORK
BARGE UNLOADING ON THE VAST EUROPEAN RIVER NETWORK
 
Coal Handling Plant
Coal Handling PlantCoal Handling Plant
Coal Handling Plant
 
Trenchless Technologies for New Pipe Installations
Trenchless Technologies for New Pipe InstallationsTrenchless Technologies for New Pipe Installations
Trenchless Technologies for New Pipe Installations
 
Coal Mining Technlogy Brief_Low Coal Seam_HOT Mining
Coal Mining Technlogy Brief_Low Coal Seam_HOT MiningCoal Mining Technlogy Brief_Low Coal Seam_HOT Mining
Coal Mining Technlogy Brief_Low Coal Seam_HOT Mining
 
CONTINUOUS MINERS
CONTINUOUS MINERSCONTINUOUS MINERS
CONTINUOUS MINERS
 
Auger Monster (JWC Environmental) - Modular Headworks System _ Ingles
Auger Monster (JWC Environmental) - Modular Headworks System _ InglesAuger Monster (JWC Environmental) - Modular Headworks System _ Ingles
Auger Monster (JWC Environmental) - Modular Headworks System _ Ingles
 
Gyromat in tunnelling practice
Gyromat in tunnelling practiceGyromat in tunnelling practice
Gyromat in tunnelling practice
 
Highwall mining
Highwall miningHighwall mining
Highwall mining
 
Jumbo boart longyear
Jumbo boart longyearJumbo boart longyear
Jumbo boart longyear
 
longwall mining
longwall mininglongwall mining
longwall mining
 
Method of working of continuous miner in underground coal
Method of working of     continuous miner in underground coalMethod of working of     continuous miner in underground coal
Method of working of continuous miner in underground coal
 
Emag News 21 English
Emag News 21 EnglishEmag News 21 English
Emag News 21 English
 
Up roughterrain
Up roughterrainUp roughterrain
Up roughterrain
 
LTM 11200
LTM 11200LTM 11200
LTM 11200
 

More from Chandan Chaman

Railway Siding
Railway SidingRailway Siding
Railway Siding
Chandan Chaman
 
List of central labour laws
List of central labour lawsList of central labour laws
List of central labour laws
Chandan Chaman
 
Tyre maintenance in open cast mines
Tyre maintenance in open cast minesTyre maintenance in open cast mines
Tyre maintenance in open cast minesChandan Chaman
 
Trolley assist dumpers
Trolley assist dumpersTrolley assist dumpers
Trolley assist dumpersChandan Chaman
 
COAL BED METHANE & CO2 SEQUESTRATION
COAL BED METHANE & CO2 SEQUESTRATIONCOAL BED METHANE & CO2 SEQUESTRATION
COAL BED METHANE & CO2 SEQUESTRATIONChandan Chaman
 
Clean development mechanism
Clean development mechanismClean development mechanism
Clean development mechanismChandan Chaman
 

More from Chandan Chaman (7)

Railway Siding
Railway SidingRailway Siding
Railway Siding
 
List of central labour laws
List of central labour lawsList of central labour laws
List of central labour laws
 
Tyre maintenance in open cast mines
Tyre maintenance in open cast minesTyre maintenance in open cast mines
Tyre maintenance in open cast mines
 
Trolley assist dumpers
Trolley assist dumpersTrolley assist dumpers
Trolley assist dumpers
 
COAL BED METHANE & CO2 SEQUESTRATION
COAL BED METHANE & CO2 SEQUESTRATIONCOAL BED METHANE & CO2 SEQUESTRATION
COAL BED METHANE & CO2 SEQUESTRATION
 
Clean development mechanism
Clean development mechanismClean development mechanism
Clean development mechanism
 
Surface Miner
Surface MinerSurface Miner
Surface Miner
 

Recently uploaded

PCI PIN Basics Webinar from the Controlcase Team
PCI PIN Basics Webinar from the Controlcase TeamPCI PIN Basics Webinar from the Controlcase Team
PCI PIN Basics Webinar from the Controlcase Team
ControlCase
 
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
UiPathCommunity
 
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
Product School
 
Monitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR EventsMonitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR Events
Ana-Maria Mihalceanu
 
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Tobias Schneck
 
Epistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI supportEpistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI support
Alan Dix
 
Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...
Product School
 
FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf
FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdfFIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf
FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf
FIDO Alliance
 
UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3
DianaGray10
 
GraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge GraphGraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge Graph
Guy Korland
 
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualitySoftware Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Inflectra
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdf
Cheryl Hung
 
Transcript: Selling digital books in 2024: Insights from industry leaders - T...
Transcript: Selling digital books in 2024: Insights from industry leaders - T...Transcript: Selling digital books in 2024: Insights from industry leaders - T...
Transcript: Selling digital books in 2024: Insights from industry leaders - T...
BookNet Canada
 
Connector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a buttonConnector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a button
DianaGray10
 
Essentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with ParametersEssentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with Parameters
Safe Software
 
Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........
Alison B. Lowndes
 
How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...
Product School
 
Securing your Kubernetes cluster_ a step-by-step guide to success !
Securing your Kubernetes cluster_ a step-by-step guide to success !Securing your Kubernetes cluster_ a step-by-step guide to success !
Securing your Kubernetes cluster_ a step-by-step guide to success !
KatiaHIMEUR1
 
FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdfFIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance
 
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...
James Anderson
 

Recently uploaded (20)

PCI PIN Basics Webinar from the Controlcase Team
PCI PIN Basics Webinar from the Controlcase TeamPCI PIN Basics Webinar from the Controlcase Team
PCI PIN Basics Webinar from the Controlcase Team
 
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
 
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
 
Monitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR EventsMonitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR Events
 
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
 
Epistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI supportEpistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI support
 
Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...
 
FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf
FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdfFIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf
FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf
 
UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3
 
GraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge GraphGraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge Graph
 
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualitySoftware Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdf
 
Transcript: Selling digital books in 2024: Insights from industry leaders - T...
Transcript: Selling digital books in 2024: Insights from industry leaders - T...Transcript: Selling digital books in 2024: Insights from industry leaders - T...
Transcript: Selling digital books in 2024: Insights from industry leaders - T...
 
Connector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a buttonConnector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a button
 
Essentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with ParametersEssentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with Parameters
 
Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........
 
How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...
 
Securing your Kubernetes cluster_ a step-by-step guide to success !
Securing your Kubernetes cluster_ a step-by-step guide to success !Securing your Kubernetes cluster_ a step-by-step guide to success !
Securing your Kubernetes cluster_ a step-by-step guide to success !
 
FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdfFIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdf
 
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...
 

Highwall mining

  • 1. HIGH WALL MINING TECHNOLOGY CHANDAN CHAMAN
  • 3. What is HIGHWALL Mining Mining Coal from  a visible, horizontal or inclined coal seam, making  rectangular, parallel, unsupported entries, with  unmanned cutter head and coal transport system, which  is remotely controlled from a  mining unit positioned outside the drive, in front of highwall.
  • 4. When to Highwall Mining • When economic strip limits are reached. • When strip limits are reached by surface conditions. • Extend operational life of mine • Transition from surface mining to underground mining • Specific Highwall Mining situations Contour Mining Open Cast Mining Trench Mining Augered seams
  • 5. Advantage of Highwall Mining COST : Highwall mining is clearly cheaper, due to the lower establishment and development costs. No in-seam support or transport systems are required, the cost of ventilation measures is negligible and the capital cost is a fraction of that of a longwall. FLEXIBILTY : Highwall mining can economically access smaller blocks of coal and is more readily able to avoid geological structures or other impediments to production. The mobility of the highwall mining equipment makes it easy to move around a pit, from pit to pit or from mine to mine.
  • 6. Advantage of Highwall Mining APPLICABILITY : Because it operates by remote control, highwall mining equipment can work in thin seams without having to cut stone to make height for people to move around, or it can selectively extract a high-quality segment of a seam. The equipment can operate on steeper dips than miners and shuttle cars, and can mine multiple seams without subsidence. SAFETY : Remotely controlled operations, so all personnel remain outside the entries & therefore not exposed to underground hazards such as roof falls, gas, dust, irrespirable atmospheres, flooding, vehicle movements in confined spaces, etc. With the use of ventilation or inert gas, highwall mining can continue in gassy seam conditions that would stop or impede underground mining.
  • 7. Production & Productivity PRODUCTION : Modern highwall mining equipment operate in seam heights of 0.76 meter to 3.05 meter in one pass and seam dips of up to 12 degrees. Coal production per machine ranges from 0.5 million tons per year for low seams to 1.5 million tons per year for high seams, in a continuous operation. PRODUCTIVITY : Highwall mining requires fewer personnel can produce 1.5 million tonne pa, compared to around 90 people (3 shifts) to get the same output from an underground mine. When factoring the lower capital and labour costs of highwall mining, the cost per tonne is much less than underground mining.
  • 8. Requirement for Highwall Mining  Competent coal.  Competent immediate overburden. If overburden is not competent, coal may be left as roof.  Coal seams dipping from -12 to + 5 degrees.  Relative flat seams, no faults  Coal seams thicker than 80cm.
  • 9. Web and Barrier Pillars  Web pillars ensure support of OB  Barrier pillars prevent cascading collapse  Barrier pillar typically every 10 to 20 drives  Calculation method to be approved by local Mine Safety Authorities. WEB PILLAR BARRIER PILLAR
  • 10. Cycle of Operation • Seam is penetrated by a Continuous Miner propelled by a Hydraulic Pushbeam Transfer Mechanism (PTM). • Cycle includes pushing forward, raising and lowering of the Cutter head boom to cut entire length of coal. • Pushbeams of 6 m is placed between the cutter head and power head as depth of penetration increases. • Using Video imaging and gamma detector, the Cutter head moves inside the seam and cuts only coal. • All functioning is controlled from a touch screen panel located in operators cabin.
  • 12. Safety Consideration • Highwall Hazard - Resulting from crushing of Pillar or Failures associated with insitu structures. - Avoided by developing 2 Zones i.e. General Safety Zone and Vertical Drop Zone.
  • 13. Safety Consideration • Roof Span Collapse Hazard - Successful and Safe Operation can be Achieved with Rapid Entry and Retraction. Otherwise HM Could Readily be Buried in Rock. • Explosion Hazards - To Minimize the Explosion FLP enclosure of Machinery and Instrumentation Entering the Highwall Drives. Methane Monitoring Equipments Installed.
  • 14. Key Features  Penetration upto 300 meters  Dip +5 to -12 degrees  Production up to 120,000 t / month  Up to 75% seam recovery  Operates with a 4 / 5 man crew per shift  Personnel safety  Low establish cost  Lower production cost than underground  No external contamination or product dilution.
  • 15.
  • 16. DIMENSIONS Length base : 16.6 m Width base : 8.3 m Weight miner : 225 t Length of push Beam : 6 m Weight of push beam : 5150 kg 50 push beams per miner Max. Push Force: in: 136 t : out: 276 t
  • 17. Cutter Head Low Seam Cutter Module Seam height : 75 cm to 1.50 m Width : 2.90 m High Seam Cutter Module Seam height : 1.20 m to 3.05 m Width : 3.50 m
  • 18. Push Beam Pushing / Pulling cutter module  Coal Convey modules  Sturdy, simple, 2 moving parts only  Enclosed -no External Contamination  Low Ground Pressure  Protect cables/hoses  Structural rigidity that ensures mining in parallel drives Inter-Connecting  Horizontally rigid : Straight Drives  Vertically hinged : Follow the seam undulations
  • 19. Push Beam Push beams are 6 m long , rectangular , reinforced steel box structures joined together to form a string, which connects the highwall mining system to the cutter assembly. The push beam string is the backbone of the machine; pushing and pulling the cutter module in and out of the highwall with retract forces up to 363 tonnes (400 tons) at 345 bars. The push beams also transport mined coal and support the hose chain that supplies control and power to the cutter. Moving coal inside the push beam (via a pair of screw conveyors) protects the coal from contamination and the moving mechanical parts from rock debris, resulting in higher availability.
  • 20. Reel & Chain  Power chain for cutter module o Electrical cables o Hydraulic lines o Cooling water lines o Methane sensor cable o Control cables  Hoses / cabling protected by steel plating  Auto unwinds/winds in trough on push beams  > 300 m
  • 21. Anchoring System Stabilizes the Highwall Miner Two Machine mounted drills Two high strength 2.5 m pins
  • 22. Controls  Operated from the cabin  Fully graphical touch screen interface  Automated mining mode  Automatic seam following: o Cutter motor current o Gamma Ray Sensor (Optional)  All machine diagnostics  Accurate heading: o Precise alignment o FOG (fiber optic gyro) guided steering (Optional)
  • 23. Generator  By the grid via a transformer  1500 kW Generator Set  80 kW auxiliary set  Build in a sound attenuated 20 ft container  Mounted on tracks  Tropical / Arctic version
  • 24. Tracks • 4 Hydraulically powered tracks articulate 90 degrees for straight and cross travel • Circle mode for accurate heading • Each track 1 meter vertical movement for adjusting seam dip and floor contour • Turning of each track is achieved automatically
  • 25. Mobility  For quick relocation over long distances, the highwall mining system can be taken apart in modules.  Rapid disassembly and reassembly is facilitated by convenient hydraulic and electrical connectors  All modules are sized for transport using regular public roads  Tracks for positioning in the mine, relative short distances.  Longer distances on heavy weight special transport low loader.
  • 27. Safety Features  Elevated cab with cameras  Above-ground operation  Small-crew size for its operation  Remote operation  Anchoring system  Continuous monitoring of the methane by DGMS approved methane Sensors  Intrinsically safe & fail safe in design  Methane sensor device interlocked with PLC control system
  • 28. Protection Against Methane  Continuous monitoring of the methane by DGMS approved methane Sensors  Intrinsically safe & fail safe in design  Methane sensor device interlocked with PLC control system  Power to UG will be “ON” only if:  The Methane sensor is “ON” & Working properly  Methane level is below 1.25%  When Methane level:  =0.8% - Operator get audio-visual alarm  >1.25% - U/G part of the machine will be powered “OFF
  • 29. Optional Features of HM  Push beam holding device for operation in seams dipping in access of 8 degrees  Water pump on cutter module for operation in seams with ingress of big volumes of water.  Inert gas system for operation in gaseous seams.  Arctic and Tropical execution of the miner / genet.  Second air-conditioned cabin for personnel working on push beam launch platform.  Stacker belt for stockpiling mined coal.
  • 30. Concluding… Highwall Mining as a coal mining method : - increases your mine-able reserves, - mine coal cost effectively, - with maximum safety - with minimum risk, that otherwise would be unrecovered. BECAUSE RESOURCES ARE LIMITED
  • 31. Highwall miner @ assembly line
  • 32. THANK YOU chandanchaman@gmail.com