Drillhole/Strata Settings

Function

This command selects drillhole symbols, defines strata, and determines how you place drillholes. 

Note:  The order in which the Strata are defined in the Strata Definitions list will be the default order for the strata when you create new drillholes through Place Drillhole.

The dialog box below shows the layout of the Drillhole and Strata Settings.





●  Select Symbol:  Select a symbol to represent the drillhole location on the screen.

●  Symbol Name:  This name corresponds to the symbol selected.

●  Symbol Size:  This field can be editted to adjust the symbols size displayed on the screen.

●  Strata Definitions:  This is not directly editable.  Select the Strata you are interested by highlighting it, then select the Edit button.

●  Add:  This option adds additional strata to the available Strata name list.  See Edit Strata dialog box below.

●  Edit:  Similar to Add, this option is available to make changes to the Strata, including adding a swell factor.

●  Strata Name: The name of the strata.

Density (lbs/ft3): The Strata Density field is the default density used to calculate strata tons. Density is strata-specific.

 ●  By Depth:  This option will generate a strata surface by modeling the strata depth values in the drillholes. This strata surface will follow the existing ground surface at the model depth.

       
 ●  By Strata Elevation:  This option will generate a strata model that connects strata irrespective of the upper surface elevation changes.

      

●  Remove:  This will remove a strata name from the available strata.

●  Move Up:  This option will move the selected strata name up one place in the strata name list.

●  Move Down:  This option will move the selected strata name down one place in the strata name list.

●  By Strata Elev: This method will generate a strata surface by modeling the strata elevation values from the drillholes. This strata surface is independent of the existing ground surface.

●  Place Drillhole Prompts:  If Depth is selected, then when you run Place Drillholes you will be prompted for the depth of each strata in your drillhole. If Thickness is selected, you will be prompted for the thickness of each strata.  If Dialog is selected, you will go straight into the Place Drillhole dialog when you create a drillhole.

●  Default Last ThicknessWill set the thickness of your bottom strata to the same amount for all your drillholes.

Keyboard Command: tk_chdef
Prerequisite: strata information