introduction

• overview

basic mining
process/terminology

• form of deposit or seam
• the mining process
• associated functions
• different types of coal
• gas content and type

exploration

• list of drillers, drilling equipment suppliers and exploration organizations

mine planning

• planning process
• common planning problems
• list of mine planning organisations

access to seam from surface

• overview
• issues to be considered
• seam access types
• excavation methods
• special issues

development

• overview
• equipment
• continuous miners

pillar extraction using
continuous miners

• overview

longwall mining

• overview
• advancing and retreating longwalls
• equipment
• cutting processes
• ventilation/gas control
• stress/strata control
• installation/relocation
• common operational problems
• punch longwall mining
• shortwall mining
• alternative shortwall mining method - gretley colliery
• longwall top coal caving

ventilation

• main fans
• main airways
• secondary or panel airways
• development face ventilation
• longwall ventilation
• ventilation planning
• ventilation equipment suppliers
• ventilation consultants
• gas control

gas drainage/outbursts

• overview
• outburst control
• drainage methods

spontaneous combustion

• description
• precautions
• dealing with an event

coal haulage

• general
• installations
• conveyor equipment suppliers
• face area haulage
• bulk winding

personnel & material transport

• general
• personnel transport
• materials transport
• transport equipment suppliers
• specialised vehicles
• roadway maintenance

subsidence

• overview

gas utilisation

• overview

strata control

• general
• mine design relating to dimensions and shape
• mine design relating to mining direction
• sacrificial support external to strata
• reusable supports external to strata
• strata reinforcement
• retention of failed strata
• strata support equipment suppliers

mine services

• electric power
• water
• compressed air
• waste water
• communications
• communication equipment suppliers
• monitoring and remote control

coal preparation

• overview

• overview
  • definitions
    • outburst size
    • outburst cavern
  • gallery
  • about the outburst site
  
  
• factors
  • mining
    • depth of mining
    • mining induced stresses
    • faults and folds
    • seam thickness
  • gas
    • gas environment
    • gas content
  • coal
    • strength of the coal seam
    • rank of coal seam
    • permeability
    • volumetric change
    • cleats and joints
  
  
• management
  • prediction
    • geology
    • prediction indices
    • monitoring
    • geophysical
    • gas environment
    • gas content
  • prevention
    • ventilation
    • gas threshold limits
    • gas drainage
    • bore hole survey technique
  • control
    • ground dressing
    • gas drainage
    • bore hole survey technique
    • hydraulic fracturing
    • pulse infusion shotfiring
    • outburst hazard control
    • outburst management plan
    • water infusion
  
  
• research & publication
  • ACARP Reports
  • Presentations
  • Publications Australia
  • Publications International
  • References
  
  
• links

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• overview
  • about the longwall site
  • history and methods
    • history and methods
    • production overview
    • retreat mining
    • advance mining
    • top caving
  • australian longwalls
  
  
• equipment
  • overview
  • shearer
    • shearer
    • photos
    • australian specifications
    • videos
    • drum
    • ranging arm
    • haulage system
    • cowls
    • bretby cable handler
    • controls
  • plough
  • powered supports
    • photos
    • chock supports
    • shield supports
    • hydraulic legs
    • setting pressure
    • yield load
    • advancement
    • control systems
  • face conveyor
    • twin in-board chains
    • twin out-board chains
    • sigle in-board chains
  • pantechnicon
    • sleds
  • beam stage loader
  • communications
  • evironmental
  
  
• ground control
  • overview
  • abutment pressure
  • optimal mining direction
  • support capacity
  • gateroad support
  • chain pillar design
    • diamond shaped
    • single line of
      square pillars
    • double line of
      square pillars
    • single line of
      rectangular pillars
    • double line of
      rectangular pillars
    • effective width
  • subsidence
    • sub-critical
    • critical
    • super-critical
  • instrumentations
  • difficult conditions
  
  
• ventilation
  • overview
  • systems
    • R system
    • R system for gassy goafs
    • Z system
    • homotropal system
    • antitropal
  • dust control
  • auxiliary ventilation
  • gas drainage
  • spontaneous combustion
  
  
• changeout
  • overview
    • critical path
  • bolt up cycle
    • photos
  • recovery
  • heusker system
  • installation
  
  
• heading development
• punch longwall
• links

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• resources