The "New Drillhole" update added an interactive drillhole planning option that can be used to draw a proposed hole on a plan or section map, or to calculate the collar location based on target location.
You can plan a new drillhole in 3 ways:
- Enter values manually
- Calculate an ideal path
- Digitize on plan or section view
Entering values manually
This option is simple. Just enter the known values for the new collar along with dip and azimuth. If you select a topography grid then the elevation of the collar (DH_RL) will be filled in. Entering the values manually to specify a collar location, dip, azimuth, and depth will calculate the target location defined by the end of the hole.
Calculating an ideal path
Entering a subsurface target location (x,y,z) along with the dip and azimuth that you would like to use to hit the target will calculate location of the collar where the hole intersects the surface defined by a topography grid.
Digitizing a drillhole in plan or section
On a plan map: Draw a line on the plan map from the x,y of the Collar coordinates (elevation can be picked up from a topography grid) to the x,y of the end of hole (EOH). The EOH is defined by elevation of the level plan map view. You can manually adjust the EOH elevation value to calculate the planned depth, dip and azimuth.
On a section: Draw a line between the collar and target on the plane of the section. The azimuth is defined by the orientation of the section view.
Plot, or re-plot, the holes in section or 3D. If you are not happy with the location of the hole then use the Edit Drillhole option to redefine it.