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ACARP Roadway Development Operator Workshops March 2009 Modelling of Gateroad Development

ACARP Roadway Development Operator Workshops March 2009 Modelling of Gateroad Development. Ernest Baafi – UOW Geoff Gray – SMS Ian Porter – UOW Osvaldo Rojas - SMS. University of Wollongong. The Development Challenge. Longwall mining is a cost effective means of extracting coal

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ACARP Roadway Development Operator Workshops March 2009 Modelling of Gateroad Development

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  1. ACARP Roadway Development Operator Workshops March 2009Modelling ofGateroad Development Ernest Baafi – UOW Geoff Gray – SMS Ian Porter – UOW Osvaldo Rojas - SMS University of Wollongong

  2. The Development Challenge • Longwall mining is a cost effective means of extracting coal • …..provided roadway development can keep pace… • ACARP initiated a project to assist improving the roadway development process.

  3. Modelling The Process • ACARP recognised the need for modelling tools • The concept of using dynamic simulation technology was proposed • UOW and SMS worked with industry experts • Modelling tools and Models developed.

  4. Simulation Technology • Methodology has numerous alias’s • Monte Carlo Simulation • Discrete Event Simulation • Computer Simulation • Simulation Modelling • Dynamic Simulation

  5. Simulation Technology • But not this… British Army WWI Horse Simulator

  6. Simulation Technology • In our context: • Models operate over time • Dynamic interactions between components • Allow for randomness/variability in operations • Provide animated displays • ……provide WHAT IF analysis capability.

  7. Scope Of Modelling • Focus On Gate Road Development • 2 heading development • Modelling will cover operations from face to boot

  8. Modelling System For Roadway Development • Dynamic modelling system • Allows Roadway Development options to be explored • Predicts: • Achievable development rates (days/1000m) • Bottlenecks (including unrecorded delays) eg • Miner waits on shuttle car • Shuttle car waits on miner • Boot end delays • Traffic delays (car interactions)

  9. Development Process

  10. RoadSIM – toolkit + models

  11. Model – Users

  12. Model Setup • Data Required To Set Up The Model • Configuration (roadway dimensions) • Miner cycle times • Support times • Shuttle Car Performance • Operational Availability • Planned • Unplanned (randomly imposed on the model)

  13. Running The Model • Each Setup is replicated many times • Each replication of the model has the same setup – but different possible unplanned events. • Animation to confirm operations • Reporting available in Excel for assessment.

  14. Animated Display

  15. Animated Display

  16. Model Output • Estimates of : • Time to complete a Pillar • Scheduled operating time per 1000m • First coal to first coal time • Exposure rates • Metres/Running Hour • Utilisation of time.

  17. Miner Utilisation Definitions Output – Utilisation Definitions Utilisation …. Calculated from random interactions in the model

  18. Output – Exposure Rates

  19. Case Study Mine • Mine was selected to test models ability to reproduce past performance • Mine 1: • 2 Heading Operation • 1 Bolter-Miner • 1 Shuttle car

  20. Case Study Mine – Historical Performance

  21. Case Study Mine – Model vs Historical

  22. Case Study Mine – Model vs Historical

  23. Case Study Mine – Model vs Historical

  24. Case Study Mine – Model Exposure Rate

  25. Exploring Options • Simulation model can be used to explore alternative options • These can include: • Pillar length • Shuttle car size • Discharge rates • Support times • Others …

  26. Exploring Options • Impact of Support time

  27. Exploring Options • Impact of Shuttle Car Discharge Times

  28. In Summary… • ACARP project has resulted in a modelling tool for Australian industry • RoadSIM is aimed at assisting in evaluating roadway development options • Provides a What If tool to assist with process improvement.

  29. Thanks for your attention …Questions ?? University of Wollongong

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