All that is required is two matching pairs of latitude/longitude and Easting/Northing for the local coordinate system. The grid is also most useful for screenshots in parallel view mode and " Grid lines in front of scene" ticked ON.Īdd " Ribbon => External => Conversion => LaLoCon (Lat/Long)" which converts latitude and longitude coordinates to your local mine coordinate system from two known coordinate pairs. The scale-bar is only visible in parallel-view mode, so I added a " Parallel view" checkbox next to the option for easy access. In the selection form displayed, place a value in " Distance", or leave the default as " -1" to ignore the distance during filtering.Īdd an in-scene scale-bar and made improvements to the coordinates grid-widget, see " Tabs to the right of the form => Grid => Grid type".
#Surpac polygon method manual
The Marker/Mapping filtering was expanded to also include filtering data which is within a specified distance from a mesh with " Ribbon => Marker => Marker filters => Manual => Relative to meshes".
The orientations of the picked mapping data are recorded, and a single disc is generated for the best fit orientation and size - see " Discussion 1" below.Īdd " Top toolbar => Cross swords icon => Bool (top three buttons)" which adds Boolean functionality - see " Discussion 2" below.Īdd more colour options than the default " Rainbow" option when colouring meshes - see " Discussion 3" below. The Surpac-files are directly loaded into the scene (similar to DXF-files), but any changes have to be saved as DXF-files.Īdd " Top toolbar => Discs icon => Best fit mapping discs", which creates a single mapping disc from mouse selected mapping data. GEM4D supported Surpac STR-files for a while now, but the DTM support is new.
#Surpac polygon method drivers
The method may be adapted to use any pre-and post-blast point movement data available, and most mine planning suites include the simple interpolation algorithms used.Updated version of the graphics engine - please update the graphics drivers for your screen card.Īdd support for Surpac DTM-files under " Ribbon => Mesh => Load DXF and Surpac files => Surpac-files".
#Surpac polygon method software
The method as implemented uses common mine planning routines and is performed using the Surpac software suite.
This transformation is then applied to the nodes of the ore-polygons to produce modified dig lines ore polygons reflecting distortion and movement resulting from the blast. Currently working in 2-dimentions (X-Y), this algorithm utilizes the movement vectors calculated from preand post-blast positions of targets placed in a blast, to generate a spatial transformation function for any point on the bench. Using a simplified vector field algorithm, a method of taking point movement data and interpolating post-blast positions for all nodes in a polygon has been developed. One Nevada gold mining company has estimated that this could be a $10 million per year problem for their operations.
This lack of correction appears to exacerbate the material mischaracterization problem of sending ore to the waste dump and/or waste to the mill. These ore-polygons are calculated using preblast material locations and are generally not corrected for rock movement caused by blasting. Statistical techniques and geological controls are then used to create two-dimensional polygons, which indicate zones of material designated as ore.
Typical grade control procedures rely on blast hole samples to indicate ore grade. Metal mining operations, in particular gold mining operations, use intensive ore control procedures in order to manage the extraction of ore zones from benches containing both ore and waste material.