Open Pit Mine & Dump Design - Gems - 2 Days


Who Should Attend

Open Pit Mine Design is a two-day course designed for mine planners, mining engineers, and geologist who are responsible for activities that require them to design and manage pits, ramps, switchbacks, slots, and waste dumps. It is ideally suited to those from industry who wish to gain a more in depth knowledge of modern mine planning and design theory and software tools.


Course Description


Software: Geovia Gems

Open Pit Mine Design is a two-day course designed for mine planners, mining engineers, geologist, and people who are responsible for activities that require them to design and manage pits, ramps, switchbacks, slots, and waste dumps. The participants will complete a pit-design project during the course. The course covers open pit design terminology, selection of loading and hauling equipment based on targeted annual production, working and safety bench geometry calculations, haul road parameters and geometric design. Prior to engaging in pit design, the course reviews principles and fundamental concepts in creating points, polylines, and triangulations; generations of plans and sections; also surface and solid modeling for the purpose of open pit design. The course includes a step-by-step project for top-down and bottom-up pit design. The project starts from the final optimal pit shell, intermediate pits shells, and the long-term schedule generated in Whittle. It covers topics on how to choose the required parameters such as berm width, variable pit slope angle, and batter angle to achieve a desired pit and dump design. The project continues with creating surface triangulations from the pit design, obtaining volumes, tonnages and grades reported by bench, rock type and grade range from the designed pit.
   

Outcomes of the course include:

    • Understand pit design parameters & components
    • Understand pit design theory
    • Use optimal pit shells in pit design
    • Select loading and hauling equipment
    • Define Bench geometry as a function of equipment specs
    • Understand haul road design
    • Design of toes, crests, ramps, switchbacks and slots
    • Define berm width, pit slope angle and batter angle
    • Create final pit designs and surfaces from the designs
    • Obtain volumes, tonnages and grades reported by bench
    • Design variable pit slopes • Handle multi-benching
    • Manage single-pit splitting to multi-pits
    • Design variable pit slopes based on rock-types
    • Carryout multi-benching
    • Design waste dumps

Day 1

    • Open Pit Terminology & Calculations
        o Bench Face, Crest, Toe
        o Bench Height and Width
        o Berm, Batter Angel, Bank Width
    • Selection of Loading & Hauling Equipment
        o Shovel size selection
        o Bucket capacity selection
        o Theoretical cycle time
        o Fill factor, efficiency, and availability
        o Determination of shovel geometry
        o Dumping radius and height
        o Shovel Selection from OEM literature
        o Haulage truck selection
    • Bench Geometry and Equipment Specifications
        o Shovel working range specifications
        o Haul truck OEM specifications
        o Working bench width calculations
        o Safety bench width calculations
    • Haul Road Design
        o Haul road design parameters
        o Haul road geometric design
        o Optimal and maximum sustained grades
        o Horizontal (longitudinal) alignment
        o Road width calculations
        o Curvature and switchbacks
        o Safety berms o Ditches and drainage
        o Estimating haul road rolling resistance
    • Polyline Tools
        o Advanced GEMS polyline tools
        o Create status line types/ user profiles
        o Create polyline workspaces
        o Digitize/edit and select polylines
        o Create boundary polygons
        o Multiline
        o Creating polylines for pit design
• Pit Design Project Set Up
        o Create pit design project workspaces
        o Create/modify status line types
        o Create/modify bench profiles
    • Pit Design Parameters o General design parameters
        o Define bench parameters
        o Define ramp slot parameters
        o Define rock code parameters

Day 2

    • Import LG Optimal Pit Shells & Schedule
    • Open Pit Design
        o How many benches?
        o Deepest bench?
        o Top bench o Pit design steps
        o Bottom to top design tools
        o Top to bottom design tools
        o Set current bench/toe
        o Create new toe/crest lines
        o Automatic fix features
        o Activate feature
        o Create ramp entrance
        o Ramp generation and automated pit design
        o Expand single bench
        o Expand multiple benches
        o Create slot entrance & switchbacks
        o Create line for opposite ramping
        o Single pit splitting into multiple pits
        o Complete the design o Typical pit design issues and errors
    • Variable Pit Slopes
        o Defining geotechnical domains
        o Blending?
        o Defining slope domains for the pit
    • Multi-Benching
    • Creating a Surface from Pit Designs
        o Create TIN Surface
        o Create a pit surface
        o Combine the pit surface with topography
        o Surface Creation Errors
    • Calculating and Categorizing Volumes
        o Volumetric reports (tonnes/grades)
        o Volumetric settings
        o Volume between two surfaces
        o Volume by bench o Grades and tonnages
    • Dump Design o General dump design parameters
        o Define bench parameters
        o Set current bench/toe
        o Create new toe/crest lines
        o Create ramp entrance
        o Expand single bench o Expand multiple benches