Three dimensional modeling of geologic structures using EVS is straightforward and provides powerful capabilities to assess complex underground formations. EVS provides a number of tools for the investigation and modeling of geologic structures. The relevant modules specific to geologic modeling are:
1) Krig_3D Geology - Uses kriging to interpolate between borings and create continuous geologic surfaces.
2) Spline_Geology – Uses the Thin Plate Spline technique to interpolate between borings and create continuous geologic surfaces.
3) Indicator_Geology – Uses indicator kriging to assign geologic materials to cells in a model grid. The use of this module is covered in the Advanced Geologic Modeling Concepts workbook.
4) 3D_Geology_Map - Uses the output of Krig_3D Geology or Spline_Geology to create 3D geologic models from geologic surfaces.
5) Geologic_Surface - Used for visualizing the surfaces created by Krig_3D Geology or Spline_Geology.
6) Fence_Geology – Used with Krig_Fence to build 2.5D fence diagrams from boring data.
Spline_Geology, Indicator_Geology and Fence_Geology will not be covered in this workbook. Spline_Geology and Indicator_Geology are covered in Advanced Geologic Modeling Concepts workbook and Fence_Geology (and its alternatives) are covered in Fence Diagrams workbook.
The first and second modules above also provide inputs to analyte (e.g. chemistry) kriging modules to allow mapping of chemical concentrations to geologic structures. This topic will be covered in subsequent workbooks. Additionally, a very large number of other EVS modules provide useful and important capabilities related to geologic modeling, but their functionality is not restricted to geologic structures.
Throughout this workbook, we will use a few terms which may have slightly modified meaning in this context. They are:
Domain: The extent of the model. This is usually defined by the convex hull or rectilinear bounding box which encloses the borings from which geologic observations were made.
Layer: An individual geologic unit or layer.
© 1994-2018 ctech.com