(This module is available only in MVS)
The overburden module computes the complete volume required to excavate a plume or ore body given the pit wall slope (measured from vertical) and the excavation digging accuracy (we refer to as buffer size).
overburden receives any 3D field into its input port and outputs the same field with an additional data component. Its function is similar to shape_cut, but instead involves computing a new data component based on the nodal values in the 3D field and two user defined parameter values called Wall Slope and buffer size (addressing excavation accuracy). The data component is subset according to a concentration input (based on the isolevel you want excavated). For example, once overburden has been run for GOLD at a 45 degree pit wall slope, the user would select 45-deg:overburden_GOLD and subset all data below 1 ppm to render a 45 degree slope pit which would excavate everything higher than 1 ppm concentration. A volumetrics calculation could be made on these criteria which would encompass the excavation and the ore body above 1 ppm.
NOTE: overburden must be placed before any scaling modules (such as Explode_and_Scale) to ensure an accurate slope angle during computations and subsequent visualizations.
Module Input Ports
overburden has one input port which receives any 3D field.
Module Output Ports
overburden has one output port which outputs a field with an additional "overburden" data component in the same units as the concentration data component, which you wish to subset on.
Module Status: Interruptible
This module's computational processes can be terminated (interrupted) using the "C Tech" icon in the Windows Notification Area (aka System Tray) in the lower right corner of your desktop. If you hover over the icon, it will tell you the status of the module and expected completion time. Double-Right-Clicking will terminate the process. Note that if you do stop any process, the output of the module is corrupted and any downstream module's results are not usable. You will need to re-run the module.
Module Control Panel
The module’s control panel is shown above. The two type-in parameters are:
Nodal Data Component - is the data on which the overburden is computed. This is the contaminant or ore that you wish to excavate.
Wall Slope - Angle measured from vertical whereby "0" is vertical and "90" is horizontal.
Create Buffer Around Plume - This toggle determines if the overburden computations are rigorous and determine the bugger on all side of the plume (ore body). If this is off, the module runs much quicker.
Buffer Size - An accuracy level resulting in the amount of excavation outside the isolevel of interest. For example, a type-in of 10.0 would result in 10 feet of over-excavation from the isolevel of interest.
Overburden creates a data component name that includes the wall slope, module name (including #1 or #2 if there are more than one copy in your application), and original data component (analyte) name. (i.e. 30-deg:overburden#1 of Benzene)
The overburden data component may be subset by modules such as plume_volume, isosurface, plume_shell, etc.
Related Modules
->fence_cut
->surf_Cut