Place Rock Bolt

Source file: rock-bolt-analysis-place-rock-bolts.htm

Use the Place Rock Bolt tool to place individual rock bolts that were missed in the automated process.

A scanner might miss a rock bolt because its line-of-sight is obstructed by other objects, a part of the wall, or protruding rock.

Adding rock bolts

Follow this procedure to add a rock bolt:

  1. On the Query ribbon tab, go to the Rock Bolts group and select Place Rock Bolts.

  2. Name, select or drag in the Destination container. The default container is scrapbook.
  3. Select the scan where you want to place rock bolts.

    PointStudio will automatically analyse the scan for possible bolt locations.

  4. Choose a Bolt type to place, or select Manage... from the bottom of the list to create custom rock bolts (see Creating a custom bolt).

    Tip:  Zoom in to analyse the surface easily.

  5. Move the mouse around the scan and locate the missing rock bolts.

    1. Initially the new rock bolt will be coloured orange and will follow the mouse around the scan.
    2. The new rock bolt will turn yellow when near a possible valid location, and green when snapping to a location.
    3. If the rock bolt looks like it will be placed in the wrong direction, select Reverse direction. This may result from having multiple scan origins such that the inside of the tunnel cannot be distinguished from the outside of the tunnel.

      4. Tip:  With Reverse direction selected, you can click on Orient all bolts to reverse the direction of all manually placed bolts.

    4. Clear Snap to nearest rock bolt if the snapped location (green) is not satisfactory.
    5. Click to anchor the bolt. Its colour will change according to the Bolt type.

      6. Note:  You don't have to wait for the bolt to change colour to place it. If you are confident the bolt is in the right position even when red, click to anchor it.

    6. Orange bolt follows the mouse while looking for missed bolts.

    Orange bolt snaps to a potential rock bolt location and turns green.

    Click to acknowledge the position as a rock bolt; rock bolt turns the specified colour.

    Tip:  If you move the cursor back over the rock bolt, its colour will change to red. You can then click on it again to remove it.

  6. Repeat steps 4 and 5 until all missing bolts have been placed.
  7. Click Update base point for all bolts to ensure that they are inserted in the tunnel surfaces to the right depths.

    8. In the above example the different coloured bolts were set up as below.

    • Orange-an unspecified bolt (to be placed).
    • Blue-represents a rock bolt.
    • Brown-represents a split set bolt.
    • Purple-represents a cable bolt.

Removing incorrectly placed rock bolts

If a bolt has been placed incorrectly, you can remove it as follows:

  1. Snap the orange bolt to the unwanted bolt. It will turn red.

  2. Click the bolt. It will turn green again.

  3. Move the cursor away; the rock bolt is removed.