Rock Bolt Analysis - Verifying Rock Bolts

The Rock bolt analysis comprises a suite of tools that allow you to locate and report on rock bolts in underground scans.

• Use the Rock Bolt Detection tool to automatically locate rock bolts on scans.
• The Verify Bolts tool can be used to check the results and remove any false positives from the automated process.
• The Place Rock Bolt tool is a smart tool that helps you quickly place individual rock bolts on the scan. This is particularly useful to add in any rock bolts that were missed in the automated process.
• Once you are satisfied with the rock bolt set, use the Rock Bolt Report to generate a PDF report that visually and numerically summarises the distribution of rock bolts.

The Verify Bolts tool can be used to check the results and remove any false positives from the automated process.

The reason for that is because there may be other things inside the tunnel that resemble a bolt, but they are really not rock bolts.

To verify automatically detected rock bolts, follow these steps:

1. Select bolts to verify.

2. On the Query ribbon tab navigate to the Rock Bolts group and select Verify Bolts.

The Verify Bolts panel appears.

3. Review and flag each rock bolt.

1.  

1. In the Bolts list, specify the set of rock bolts you want to analyse.

   Expand for detailed instructions

   This field requires a rock bolt selection.

   • To add items to the list, select individual rock bolts or containers of rock bolts in the project explorer, and click . Alternatively, drag and drop a selection of rock bolts from the project explorer into the list.
   • Click to remove items from the list.
2. In the Scan field, specify the source scan to verify the rock bolts against.

4. Click OK or Apply.

The Verify Bolts window will open and display a small section of the scan surrounding the rock bolt to analyse more closely.

• For a positive detection click or for a false positive detection click .
• Click to view the next bolt or click Ctrl+ alternatively click Ctrl+
• Click to view the previous bolt or click Ctrl+ alternatively click Ctrl+.
• If the Rock bolt type is incorrect it can be re-set with Manage... option.

• Look along bolt changes the viewing angle of the bolt. You can maximise the window to full screen, zoom in / out and rotate the image to achieve the best viewing angle for your decision.
• All the bolts flagged as bad can be deleted or removed from the list with .

Below is an example of a positively detected rock bolt (left) compared to a false positive detected rock bolt (right).

If there were rock bolts that were missed by the Verify Bolts tool, you can place individual rock bolts with the Place Rock Bolts tool.