The properties or attributes can contain numeric or character string values. Each block contains attributes for each of the properties to be modelled. Maximum Northing (Y), Easting (X) and Elevation (Z).īlocks and attributes The centroid of each block defines its geometric dimensions in each axis, that is, its Y, X, and Z coordinates. Minimum Northing (Y), Easting (X) and Elevation (Z).
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Model space 3D coordinates spatially define the model extents. It provides a method for estimating volume, tonnage, and average grade of a 3D body from sparse drillhole data. The block model consists of interpolated values instead of true measurements. There are other ways to achieve a result.īlock modelling concepts The block model is a form of spatially-referenced database that provides a means for modelling a 3D body from point and interval data, such as drillhole sample data. Note: This workflow demonstrates the steps in this tutorial. Requirements Before you begin this tutorial, you must have: lĪ good understanding of the basic Surpac concepts of strings, segments, DTMs, and string tools Surpac 6.3, or later, installed on your computer the data set accompanying this tutorial learn about column processing of a block model. learn to report volume, tonnage and grade from a block model. learn to constrain a block model to filter out specific blocks. learn to fill a block model from drillhole data from a geological database.
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Introduction Overview By working through the examples in this tutorial you will: līecome familiar with Surpac’s block modelling module and the concept of block modelling. Task: View the data Classify blocks Task: Classify blocks into ore and waste Reduction and dilution Task: Calculate dilution and reduction Recoverable product Task: Calculate recoverable product Thicknesses Task: Calculate column thickness
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Partial percent reporting from the block model report Task: Report partial percent using geometric grouping in the block model report Simple partial percent reporting Task: Create partial percentage report Multiple attribute reporting Task: Report on grade, grouped by rock type Model reblocking Model reblocking Task: Perform model reblocking Column processing Task: Create a block model report Creating calculated attributes Task: Create calculated attributes Partial percentage reporting Setting up for this tutorial Setting the work directory Task: Set the work directory (Windows 7) Displaying the toolbar and menu bar Task: Display the Block Modelling toolbar and menu barĪpplying constraints to a block model Task: Apply constraints to a block model Estimation or filling the block model Assign Value Task: Fill the block model using Assign Value Nearest neighbour Task: Fill the BIF zone using nearest neighbour Inverse distance Task: Fill the sand zone using inverse distance Ordinary kriging Task: Fill the QPY zone using ordinary kriging
Surpac inverse distance squared block software#
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