| GeoCad | |
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A tool for presentation of drill hole data |
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Rock drilling machines are working in some mine drift, producing
drill cores for exploration of a new orebody. A geologist is mapping the cores looking for
important stratigraphic changes. She also takes samples for chemical analysis especially
from a mineralized zone. Back at the office the geologist is storing the data from the
drill core mapping in a database. There is already data from the drilling positions such
as collars and deviation measurements. She picks up the chemical analysis from the network
that is attached to the laboratory computer. The geologist starts the work on the new
target area by drawing the drill core data in MicroStation 3D CAD with the MDL application
GeoCad. This is the first step for the geologists to interpret and build a model of an ore
body as an irregular 3D volume. to be continued... |
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Data Entry The data is stored in user and project adapted databases. To achieve a high accessibility and good organisation of your data all information is stored in a project-related structure. A special function detects logical errors in your data set. With dBBrowse it is easy to view and edit the data tables within MicroStation. Correction for Drill Hole Deviation If any deviation measurements are done in the drill holes, these are taken into account, so that the drill holes are drawn as curves following the real drilling path. |
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Configuration of Drill Hole Data In order to achieve the most comprehensive presentation of your data, youcan choose different configurations for the graphical presentation, as well as several drawing methods. The configuration is done interactively from intuitive pull down menus and dialogue boxes. Lithologies are normally drawn as cylinders, where each mapped lithological section from the drill core has its own colour.This creates a realistic drawing of a drill core in three dimensions, which facilitates interpreting structures and rock units in the rock mass. Numeric data, such as chemical analyses, rock quality values, or geophysical data can, for example, be presented as cylinders, where the cylinder radius is proportional to the numeric value. You can also illustrate your numeric parameters by choosing cylinders with equal radius and a colour scale, ranging between dark blue and light red, reflecting the numeric values. If it is necessary to compare, for example different chemical components, the most proper presentation is achieved by presentation with bars on each side of the drill hole line representing each component. |