geomodelling, resource & reserve estimation using mining software
TRANSCRIPT
Presented byChandra Bose (MAusIMM)
Exploration Geologist
“Geomodelling, Resource & ReserveEstimation and Pit optimization”
Introduction
Geo - Modelling
Resource & ReserveEstimation
Pit optimization
Software: Gemcom Minex, Surpac,Minescape, Vulcan, 3D AutoCAD
Geo-Modelling•Easting, Northing, Collar, Total depth, Azimuth, Dip, type(Coring
& Non-coring)Borehole data
•Borehole ID, From, to, Thickness, Rock typeBorehole lithology
•Borehole ID, From, to, Thickness, Seam ID/Ore NameSeam/Ore mineralization
•BHID, Ore name, respective elements like Fe, Si, S, Ca, K, P, etc.Quality (Assay) data
•Easting, Northing, Collar (Surface Reduced Level (SRL))Topography
Mining Block BoundaryCoordinates
( All the inputs should be available in CSV format)
Geo-Modelling
3D Borehole section
Geo-ModellingInterpretation from Geo-Modelling
• Fault position (Structural Elements)• Roof contour• Floor contour• Iso-Core contour (thickness)• Iso-Grade contour• Iso-Depth contour
Geological cross section• Along strike• Along dip
Delineation of In crop /outcrop of ore body/coal seams etc.
Borehole profile
(Generate in string format than exported into DXF/DWG format)
Geo-Modelling
Borehole section Borehole correlation
Geo-Modelling
3D depict Ore body positions underneath surface
Depict integrated with Floor, Iso-core, Iso -grade and Fault position of mineralized zone
Resource and Reserve Estimation
Resource and Reserve EstimationResource categorization
Reserve categorization
Resource and Reserve Estimation
Iso-core grid
Density / Specific gravity
Recovery factor• Considering Geological disturbance and mining loss
Topo grid
Quality grid
Reserve Estimation
Geological ReservesThickness wise
Grade wise
Depth wise
Mineable Reserves
Extractable Reserves
Barrier - infrastructure, Bench, conveyor belt etc.
In suite reserve underneath Reserves
Cut off depth
Generally mineable reserve (OP- 60 % & UG 30 – 40% Recovery)
Extractable thickness
Mineable loss/ Dilution
Resource and Reserve Estimation
Pit Optimization
Prior to the Pit Excavations i.e. Axis Trench cutting design
Mine infrastructures and surface pit head designs includes ore stock yards
Box cut of Open Pit Design / Mine Layout
Year wise Pits/Mine Layouts with desired production figures etc.
Periodical Face wise Opencast Mining operational designs suitable to the machinery input and targetedproduction outputs
Haulage Roads layout mine designs
Pumping layout designs
Pit Optimization
Electrical /substations Layouts
OB Dumping layouts and waste dump & topsoil dumps management pit designs etc.
Internal dumps planning and Remanding dumping programing etc.
Conceptual mine planning pit design
Mine closure and Land use in the mining project designs etc.
Mine Environmental management and impact designs
Mining economics estimations and profit and loss details planning’s etc.
Ore beneficiation plants planning and profitable mine dispatches technics etc.
Mine funding and revenue programing from the beginning of the projects also can be estimated withthis software
Pit Optimization
Pit Boundary
Slope angle
Bench Height & Width
No of Bench
Surface RL and Floor RL (Cut offdepth/ Querry bottom
Pit Optimization
Pit Optimization
Pit Optimization
Sectional view
Typical mine plan
Thank you