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Add Spot Bolts

The application of Spot Bolts works a little differently than the other support types (i.e., pattern bolts, shotcrete, pressure) in UnWedge.

  • Like other support types, Spot Bolts (on the perimeter) must always be initially added, while viewing the Perimeter Support Designer view.
  • After adding a Spot Bolt on the 2D view, the Spot Bolt will in general require a 3D orientation and a specific location on the wedge face. This is done in the 3D Wedge View, using the Move Spot Bolts option.

To add a Spot Bolt on the perimeter:

  1. Make sure you are viewing the Perimeter Support Designer Perimeter Support Designer icon view.
  2. Select Add Spot Bolt Add Bolt icon from the Support menu.
  3. You will see the Add Spot Bolt dialog.
    Add Spot Bolt on Perimeter dialog
    Add Spot Bolt on Perimeter dialog
  4. In the Add Spot Bolt On Perimeter dialog, enter the following information and select OK.
    1. Bolt Properties
    2. Bolt Length
    3. Orientation
    4. Out-of-plane Offset
  5. You will then be prompted to enter the location of the Spot Bolt on the Opening Section boundary. This can be done graphically with the mouse, or you can enter the coordinates of the point in the prompt line.
  6. The initial orientation of a Spot Bolt is always normal to the boundary segment on which the bolt is applied (with the exception of Local Trend and Plunge orientation).
The initial location of the Spot Bolt along the tunnel length, is always at the z = 0 coordinate (i.e. the z-location of the wedge apex). For an illustration of the z-coordinate origin, see the 3D Coordinates topic.
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