Tunnel Profiler

FTDM Laser Tunnel Profiler

I. Instrument Overview

China is a mountainous country, with 75% of its land consisting of mountains or heavy hills. To shorten distances, protect the environment, and save land, tunnel solutions are particularly emphasized in China's mountainous infrastructure construction. Excavation is a critical process affecting both the construction timeline and cost of tunnels. Over-excavation not only increases project costs due to increased muck removal and lining quantities but also directly affects the stability of surrounding rock due to stress concentration caused by local over-excavation. Under-excavation directly impacts lining thickness, affecting project quality and safety. Various data indicate that controlling over-excavation and under-excavation significantly influences the reliability and economic efficiency of tunnel structures.

The FTDM series laser tunnel profiler utilizes non-cooperative target laser ranging technology and precision angle measurement technology, closely integrating polar coordinate measurement methods with computer technology. Paired with professional graphic processing software, it can quickly obtain the internal contour curve of the tunnel's enclosed space, display over-excavation and under-excavation values in real-time, measure convergence conditions and excavation earthwork volume, and has a blasthole indication function. It can quickly produce test results and reports without post-processing, making it a highly practical engineering measurement tool.

II. Application Scope

1.   Rapid detection of tunnel excavation cross-sections

2．Internal contour detection of large-span buildings

3．Acceptance testing of slope protection retaining walls

4．Monitoring of dam base and ditch excavation cross-sections

5．Static deflection detection of bridges

6．Mine boundary detection

7．Construction inspection, completion acceptance testing, and excavation volume measurement

III. Instrument Features

1. Truly high-speed and accurate detection, no post-processing required, reports can be directly output

2. High-precision angle control ensures accurate measurement results

3. Truly massive storage capacity, meeting unlimited usage

4. Integrated design, compact and lightweight, simple and convenient operation

5. Uses a dedicated controller, displaying results vividly and intuitively

IV. Technical Specifications