Mine drives and tunnels, from any scanner. AutoTerra Tunnel takes a bore — terrestrial, SLAM, handheld or mobile — and returns audited cross-sections, conformance numbers and inspection records. Drives, stages and stations live in the project file, so every heading keeps its own history, and nothing reaches a deliverable until a person has accepted it.
Four stages, in one window. The baseline comes from CAD, a drawn path or a two-click oblique line, and stations at whatever interval the job needs. The tracer returns a ring at every station. Every ring is then judged by a person. Only then does anything become a deliverable.
A working bore is full of things that are not the wall: machinery, vent lines, muck, cross-cuts, a face that moves between surveys. The tracer is built for that, and picks its method from the shape of the bore — radial sweep with shape fitting for engineered profiles, per-surface assembly for blasted rock.
A traced ring is a proposal, not a result. Every station arrives with the numbers to judge it and a verdict that has to be given — and where the tracer has read the rock wrongly, the operator's pen is the authority. The verdict travels into every report and export.
Trace or author one good ring, then chain it along the bore: each station fits the previous ring to its own classified evidence, audited stations are left alone, and everything returns as pending for the normal audit. After the audit, densify to fine rings — every 0.25 m, say — for a smooth 3D bore and a convincing walk-through. Reporting always stays on the audited stations.
It was built around a working mine drive — rough blasted rock, machinery in the section, cross-cuts every few tens of metres, a face that moves between surveys, a scanner carried by hand. Civil bores came easily afterwards.
Wriggle draws per-vertex radial deviation onto the ring against the fitted circle. Load a design radius or profile and the same read becomes true over- and underbreak. Reports name their reference, so a wriggle plot is never mistaken for a compliance statement — and where no design covers a chainage, the report says so rather than inventing a delta.
A locked cross-section with station navigation, the profile view with crown and invert along the drive, and a 3D ring stack you can clip to a band and walk through. Findings are pinned onto the bore itself, in tunnel coordinates, and survive a re-trace.
Every report states what it covers — "116 reported of 137 traced" — and names the reference its numbers were measured against. Valid stations only.
The bore you section is the cloud you classified, in the project that already holds your survey, terrain, alignment and corridor work. Nothing is exported and re-imported, there is no second coordinate system to reconcile, and the results land in the drawings and reports your team already uses — one interface, one licence.
AutoTerra Tunnel is licensed above the base application, on an AutoTerra Pro Spatial or Pro Aero host, and is available with the AutoRoads line. It is included in the 30-day AutoTerra Pro Aero trial, so you can run it on your own section before committing to anything.
The module is in active field validation on real tunnel and mining datasets, and is offered at early-access pricing while that continues. Two-epoch convergence and deformation tracking, and the unrolled-wall deviation heat map, are on the near-term roadmap rather than in this release — early-access customers get the current toolset now, a direct line to shape what ships next, and a locked price before it moves to standard list.