Tunnels
Trimble® Tunnels software is specifically designed for surveying in tunnels. It provides tools to define, survey, stakeout, and report on tunnel operations and guides you through tasks such as marking areas of underbreak and overbreak, and positioning machinery.
Use Tunnels to:
- Define your tunnel
- Define tunnel components including horizontal and vertical alignments, templates, and rotation, or import a definition from a LandXML file.
- Define end‑face blast holes and set out positions typically used for bolt holes or for stabilizing pipe umbrellas.
- Review the tunnel before going underground.
- Survey your tunnel
- Auto scan cross sections including options to manually measure and delete points.
- Measure positions relative to the tunnel definition.
- Set out predefined positions for blast holes, bolt holes, and pipes.
- Position machinery, typically a drilling rig, relative to the tunnel.
- Output and reports
- Review auto scanned and manually measured points.
- Review set out points.
Use the Cogo menu to carry out coordinate geometry (cogo) functions without having to switch to General Survey. You can also access some of these cogo functions from the tap and hold menu in the map.
Using Tunnels
When starting a survey you are prompted to select the survey style you have configured for your equipment.
To switch between applications, tap the application icon in the status bar and then select the application to switch to. Alternatively, tap 
and tap the name of the app you are currently using, and then select the application to switch to.
To define and survey the tunnel using the term 'chainage' rather than 'station' for the distance along the tunnel, tap and select Settings / Language and then select the Use chainage distance terminology check box.
