TUNNEL, ROCK AND MINING
Where GPS ends, the scanner keeps working
Underground, indoors, in the dark.
A handheld Trion scanner positions itself with SLAM - it needs neither satellites nor daylight. Walk the drift, the tunnel or the quarry face and get a measurable 3D model with cross-sections and volumes.
Why SLAM is the underground method
Total stations need line of sight and setups; GNSS needs sky. A SLAM scanner needs neither - it recognises the surroundings and builds the model as you walk.
satellites required
Positioning is built from LiDAR and IMU, so the model holds together deep underground.
relative accuracy
S2-series specification - enough for cross-sections, clearance checks and volume calculation.
range with the S2Max
Open pits and large caverns are covered in far fewer setups than with a 120 m scanner.
What you get out of the scan
Cross-sections and as-built control
FJD Trion Model generates vertical and horizontal cross-sections from the point cloud - compare the profile against the design, document overbreak and underbreak, and check clearances before installation.
Volumes without a survey crew
Stockpiles, faces and excavations are measured in the model instead of on site. Rescan the same area later and you have the change between two dates.
Documentation that survives the shift
The scan is a complete record of how it looked on that day - useful for handover, disputes, insurance and the next contractor. Nothing has to be re-measured because someone forgot a dimension.
Send the scanner where people should not go
The Trion accessory range includes a robot dog mount, developed for automatic scanning and inspection in demanding environments - construction sites, disaster areas and underground facilities. Combined with the extension pole and backpack, the scanner reaches places a survey crew cannot safely stand.
The robot dog itself is not part of our range - we supply the scanner, the mount and the workflow.
How an underground survey runs
1. Planning
We agree the extent, what has to be documented and how the result should be delivered.
2. Walk-through
Walk the drift or the space with the scanner. The point cloud builds live on the tablet, so gaps are caught before you leave.
3. Processing
Trion Model classifies, generates cross-sections and calculates volumes and areas from the model.
4. Delivery
LAS point clouds, sections, volume reports and 3D models - into your CAD, BIM or mine planning software.
FJD Trion S2MaxFJD Trion S2ProFJD Trion P2FJD Trion ModelFJD Trion V100F
Frequently asked questions
Does it really work without any GPS signal?
Yes. SLAM builds the position from LiDAR and IMU data by recognising the surroundings. GNSS is only needed if the result must sit in national coordinates - and then you tie in at the portal. The FJD Trion V100F is purpose-built for exactly that transition zone - from GNSS-free measurement to national coordinates at the portal - holding centimetre-level accuracy for over 10 minutes along the way.
Is light required?
The LiDAR measures with its own laser and works in complete darkness. The cameras that colour the point cloud do need light, so in an unlit space you get geometry without photo colour.
How long can we scan on one charge?
The S2 series runs about 3 hours on two batteries, the P2 up to 4 hours. Batteries are swapped in the field.
Which scanner suits mining best?
The S2Max for large open spaces thanks to its 300 m range, the S2Pro where dense detail matters, and the P2 when weight and tight passages decide.
Can we calculate volumes from the scan?
Yes - volumes, areas, distances and cross-sections are measured in Trion Model, and two scans of the same area give you the change over time.
Do you have a Swedish reference in mining?
Not yet - we are open about that. The technology is proven in tunnels and underground facilities internationally, and we are looking for the first Swedish site. Contact us if you want to be it, on favourable terms.
Be the first Swedish site
We are looking for a Swedish tunnel or mining project to scan together - you get the documentation, we get the reference. RoboService is an authorised FJD Trion dealer with Swedish support.