Tunnel Clearance Measurement System
3D Tube
SK-120005-VR
This system measures the tunnel’s internal dimensions using a high-precision 3D scanner and outputs data on over-excavation and under-excavation relative to the design, the volume of lining concrete, and as-built management. By managing surfaces with the multi-point cloud data characteristic of 3D scanners, it supports improved quality in tunnel construction.
Overview Diagram
Management Software
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![Point Cloud 3D Model]()
Point Cloud 3D Model
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![Side View Drawing / Comparison With Design Values]()
Side View Drawing / Comparison With Design Values
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![Side View Drawing / Comparison With Design Values (e.g., Thickness)]()
Side View Drawing / Comparison With Design Values (e.g., Thickness)
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![Cross-Section Display]()
Cross-Section Display
･Comparison with design values
･Comparison with measured values (e.g., lining thickness) -
![Work-in-Progress Management Sheet]()
As-built Management Sheet
Specifications
| Model | GLS-2200S |
|---|---|
| Maximum Measurement Distance | 130 m |
| Measurement Range | Horizontal: 360°, Vertical: 270° |
| Maximum Points Acquired | 120,000 points / s |
| Actual Measurement Time | Approx. 7 to 10 min |
| Measurement Accuracy (Distance) | 3.1 mm |
| Measurement Accuracy (Surface) | 1.0 mm |
| Weight | Approx. 10 kg (including battery and leveling base) |
