{"id":2843,"date":"2025-08-11T18:52:21","date_gmt":"2025-08-11T18:52:21","guid":{"rendered":"https:\/\/3gsm.at\/?post_type=learning&p=2843"},"modified":"2025-08-11T18:52:22","modified_gmt":"2025-08-11T18:52:22","slug":"shapemetrix-tbm-3d-tunnel-face-documentation-for-tbms-in-hard-rock","status":"publish","type":"learning","link":"https:\/\/3gsm.at\/learning\/shapemetrix-tbm-3d-tunnel-face-documentation-for-tbms-in-hard-rock\/","title":{"rendered":"ShapeMetriX TBM: 3D Tunnel Face Documentation for TBMs in Hard Rock"},"content":{"rendered":"\n
Advanced software then processes the acquired video and orientation data to generate scaled and oriented 3D images of the tunnel face. These high-quality 3D representations allow engineers to perform comprehensive rock mass characterization, including geometric measurements, geological mapping, and overbreak quantification.\u00a0<\/p>\n\n\n\n
Overbreak quantification is a fundamental information when it comes to the assessment of cutter wear which connects ShapeMetriX TBM directly to excavation costs. <\/p>\n\n\n\nFigure 1: ShapeMetriX TBM ImagingSystem frontal view showing key components: (1) casing, (2) handle, (3) plastic feet, (4) action camera enclosed in waterproof casing, (6) LED lighting array for tunnel face illumination, (7) clamp for secure mounting.<\/em>\u00a0<\/figcaption><\/figure>\n\n\n\nFigure 2: ShapeMetriX TBM ImagingSystem rear view showing essential controls and connectors: (5) integrated smartphone for system control and data handling, (8) USB charging connector (non-functional for this model), (9) main battery charging port with waterproof seal, (10) main power switch for activating system, (11) camera activation push button, (12) camera status indicator light, (13) rotation handles for field-of-view adjustment, (14) fixating screws for securing the camera unit.<\/em>\u00a0<\/figcaption><\/figure>\n\n\n\n
Seamless Operation and Practical Site Requirements<\/strong> <\/h2>\n\n\n\n
The ShapeMetriX TBM system is designed with operational simplicity and site constraints in mind. Standard installation uses 600 mm diameter openings on the TBM shield, allowing the imaging unit to be securely clamped and operated autonomously. However, alternative mounting solutions are available, and the system can be adapted for other opening geometries or custom requirements, ensuring compatibility with a wide range of TBM configurations. Data acquisition is efficiently carried out during TBM maintenance shifts, minimizing project disruption. <\/p>\n\n\n\n
The autonomous TBM ImagingSystem consists of a rugged, waterproof casing that houses a high-performance action camera, an integrated smartphone (which controls the camera and manages data acquisition), and an array of LED video lights carefully arranged to ensure optimal illumination of the tunnel face, even in demanding underground conditions. <\/p>\n\n\n\n
The fully self-contained ImagingUnit operates independently, requiring no external power sources or cabling. Each installation captures digital imagery of an annular segment of the tunnel face visible through an inspection opening \u2014 providing reliable and objective documentation within the available maintenance window, though a single scan cannot image the entire face at once. <\/p>\n\n\n\nFigure 3: Ideal camera field of view showing the annular segment of the tunnel face captured during a rotation of the TBM cutter head.<\/em>\u00a0<\/figcaption><\/figure>\n\n\n\n
User-friendly Image Acquisition and Data Management<\/strong> <\/h2>\n\n\n\n
ShapeMetriX TBM features an intuitive Android app that guides operators through the entire imaging process \u2014 from system activation and camera preview to video recording and wireless data transfer. After recording a 370-degree cutter head <\/strong>rotation, video data is wirelessly transferred to the smartphone, then easily exported to computers for further 3D image construction and analysis. <\/p>\n\n\n\nFigure 4: An Android-based app enables full control of the imaging process, from preview and alignment to recording and data transfer.<\/em>\u00a0<\/figcaption><\/figure>\n\n\n\n
The software allows robust geotechnical documentation and facilitates ongoing project assessment, enabling operators to make informed decisions about TBM advance strategies and ground support design. <\/p>\n\n\n\n
Proven Performance and Trusted by Industry Leaders<\/strong> <\/h2>\n\n\n\n
ShapeMetriX TBM has been successfully deployed on major tunnelling projects across Europe, including Follo Line in Norway, Koralm and Semmering base tunnel in Austria, or B\u00f6zberg in Switzerland. Current projects include Snowy Hydro, Australia, and Lesotho Highlands Water Project. These references underscore the system\u2019s reliability and effectiveness in documenting tunnel faces within hard rock environments. <\/p>\n\n\n\n
Safety and Maintenance<\/strong> <\/h2>\n\n\n\n
The ShapeMetriX TBM system is designed for safe operation with clear safety guidelines. The watertight units prevent water ingress, and the LED lights are designed for safe, reliable operation. Maintenance procedures for mounting unit replacement and system calibration ensure flexibility and longevity of the imaging system. <\/p>\n\n\n\n
Conclusion<\/strong> <\/h2>\n\n\n\n
ShapeMetriX TBM by 3GSM GmbH is a cutting-edge solution that transforms the tunnel face documentation process for hard rock TBM projects. By combining autonomous digital imaging, robust orientation measurement, and advanced 3D image generation, the system empowers project teams to achieve superior geological characterization, optimize tunnelling operations, and enhance safety \u2014 all within the challenging constraints of tunnel construction. <\/p>\n\n\n\n
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