Generate a single drillhole

Generate Single Drillhole

Note: Until you enter Edit Ring mode and select a ring, the holes on the ring will not be displayed unless the "Always display holes" option is selected on the Drillhole page of the Ring Design Options form.

To add a hole to a ring (by defining a pivot point and an end point with the mouse):

Click on the Edit Ring button to enter Edit Ring mode. If no ring is selected, the Selection Assistant will prompt you to select a ring you want to edit.

The orientation of the display will change so that it is orthogonal to the selected ring plane. If holes already exist on the current ring, they will be displayed. Click on the Generate Single Drillhole tool on the Ring Design toolbar.

Define a pivot point and an end point.

When you have setup a Drill Rig Restriction in the Ring Design Options form:

An outline of the rig shape is drawn around the cursor when you design new holes. The rig outline is a solid line when the rig lies inside the drive (and is, therefore, in a valid position). If any part of the rig shape falls outside of the drive, a dashed line is shown.

You can use the keyboard to move or nudge the boom (the rotatable part of the rig) when designing new holes in Ring Design.

In Vizex, you can use the keyboard arrow keys to nudge selected strings or points in the plane of the screen, by a specified increment, or by a specified increment and multiplier.

The Up and Down arrows move the selected strings or points in a positive and negative Y direction. The Right and Left arrows move the selected strings or points in a positive and negative X direction.

The CTRL key can be used in combination with the arrow keys to modify the increment:

CTRL will move by increment / multiplier.

Note: Nudge increment and multiplier values are defined as String Editing Options (Tools | Options | Vizex | String Editing). The nudge increment defaults to 1.0. The nudge increment multiplier defaults to 10.

For example, if the nudge increment is set to 1, and the nudge increment multiplier is set to 10, the arrow keys will move the rotatable part of the rig by 1, while CTRL + arrow keys will move it by 0.1.

The rig shape can also be rotated using the arrow keys:

SHIFT + LEFT/RIGHT ARROW keys will rotate by 5 degrees.
SHIFT + UP/DOWN ARROW keys will straighten the rig (point the rig up/down).
SHIFT + CTRL + LEFT/RIGHT ARROW keys will rotate by 1 degree.

Once a valid rig position is selected and the mouse button is pressed, the rig shape will be anchored at that position. As the mouse is moved around, the boom of the rig shape rotates about the boom pivot point, again changing how the lines of the rig shape are drawn.

When the pivot point and the hole angles are edited, some basic checks are made against the rig shape to ensure that the rig position/boom rotation is valid.

For fans, the boom of the rig shape continues to rotate around the boom pivot point, again being drawn as a solid line when the end hole direction is valid for the rig shape.

Note: If you release the mouse button in an invalid rig position/boom rotation based on the hole direction, the tool will do nothing and you must select a valid direction and press the mouse button.

The position and other attributes of the hole can then be adjusted in the Generate Single Drillhole form.

Parameters	Description
Drill Parameters	Enter the Diameter of the hole in millimetres. Set the angle of the hole. How the hole angle is measured can be set as part of your Ring Design Options.
Pivot Point	Adjust the position of the pivot point. The displayed coordinates represent an offset from the drive string. The pivot point is measured from the intersection point of the drive string and the ring plane (the drive "centre line").
Charge Details	(Optional) Enter attributes for Charge Type and Density (in kg/cubic metres).

If the pivot point is repositioned outside the drive, an error message will be displayed and you will be prompted to re-enter the pivot point offset coordinates.

Finally, click the OK button to generate a single hole.
Note: While you can use the mouse to move and rotate holes in the display, it is preferable to adjust the position and the angle of selected holes in the Properties window.
If you need to modify the position and angle of multiple holes, you can use the Adjust Multiple Drillholes tool on the Ring Design toolbar. Depending on the changes you want to make, it may be easier to delete those holes and recreate them using the Generate functions provided on the toolbar.