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Ben Williams, Senior Mining Consultant, from Deswik delivered this presentation at 2012 Longwall conference in the Hunter Valley Australia. Building on eleven years of excellence it’s rare that such a large gathering of underground coal operators come together under the one roof, providing a great opportunity to catch up with friends, industry leaders, former colleagues and longwall mining specialists. For more information, please visit: http://www.longwallconference.com.au
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Detailed Longwall Planning & Scheduling
Benjamin Williams22 Oct 2012
Presented By:Date:
Longwall 2012
Longwall 2012
• Mine planning focused consultancy and software development company
• Focused on building innovative software solutions to solve problems in the mine technical services area
• Offerings include:
– mine planning consulting
– software packages
– training and implementation
– bespoke development services
Introduction
LondonCalgary
Johannesburg
PerthBrisbane
Wollongong
Software also used in locations such as:Sweden, Sierra Leone, New Zealand, Kazakhstan, Ghana, Colorado, Brazil,
• Offices in Brisbane, Perth, Mackay, Newcastle,
South Africa, Canada and London
• 75 People Worldwide
• Founding members consulting with and
developing mine planning software for the
past 15 years
Longwall 2012
Integrated Software
• Deswik Suite provides a single integratedpackage that combines:
– CAD and reserves generation
– Short Term through to Long Term Scheduling
– Blending for different economic variables
– Reporting and Presentation
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Deswik.CAD
• Design
• Visualisation
• Data validation
• Graphical reporting
• Plugin environment
Deswik.IS
• Integrates CAD and Scheduler
• Process driven approach
• Rule based task generation
• Manages data
• Reconciliation
Scheduler
• Represents design as Gantt tasks
• Resource driven schedule
• Blending and low modelling module
• Plan compliance
Core Modules
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Underground Process Flow
Planning Process
Software Goals
• Set out to design sector specific software tools to enable modern design and integrated scheduling across all levels.
• Step through several of the general and specific issues we felt needed to be addressed for UG Coal design and scheduling:
Longwall 2012
Software for UG Coal
• Semi generic products that don’t fit UG requirements well
• PCS (Poor Cousin Syndrome)
• 2D design
• Multiple unconnected programs causing disconnects throughout the design and scheduling process.
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• Different long term – short term schedule
• UG Coal specific scheduling issues
• Repetitive Design Elements
• 2 Dimensional environment
• Complex geologic models
Common Software Issues
LT & ST interface
• Traditionally separate models.
• Long term Schedule lacks detail required for Short term planning.
• Short term takes too long to add into Long term.
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UG Coal Scheduling Issues
• Resourcing
• Varying production rates
• Super-paneling
• Managing conveyors
• Rapid schedule changes
• Schedule analysis
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Scheduling Solutions
Longwall 2012
Scheduling Solutions
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Scheduling Solutions
Longwall 2012
Design
• Working within CAD environment
• Effectively polylines/strings representing drive centrelines
• Repetitive design work - not easy to modify.
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2D Design Environment
• Often restricted to a 2D environment, depending on design software package
• Important metrics like thickness, volume and dilution treated as a 2D calculation
• Visualisation of faulting and structure
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Complex Geological Models
• Grid models that treat individual plysseparately
• Aggregated models – complicated, can lose the original data
• Complex scripting calculations
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Design Solutions
Longwall 2012
Design Solutions
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Design Solutions
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Design Solutions
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Design Solutions
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Design Solutions
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Design Solutions
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Going Forward
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• Longwall Grade Smoothing
• LTCC
• Place Changing
• Manning Overlay
Longwall 2012
