Urban rail tunnel global full-station scanning of clearance section measurement and automatic evaluation method
By combining full-station 3D laser scanning and precision traverse measurement, the efficiency and accuracy issues in urban rail tunnel clearance section measurement have been solved. This enables full-coverage, efficient, and automated clearance section measurement and evaluation, adapting to complex environments, reducing manual intervention, and meeting the needs of intelligent operation and maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHONGQING INST OF SURVEYING & MAPPING SCI & TECH (CHONGQING MAP COMPILATION CENT)
- Filing Date
- 2026-06-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for measuring the clearance section of urban rail tunnels suffer from problems such as low measurement efficiency, high manual labor intensity, insufficient accuracy, and low degree of automation. In particular, it is difficult to achieve full coverage and efficient measurement and automatic evaluation in small-section tunnels and complex environments.
By employing full-station 3D laser scanning combined with precision traverse surveying, a high-precision control network is constructed, scanning parameters are optimized, and full-domain point cloud data acquisition and automatic evaluation are achieved. Automatic section extraction and evaluation are realized through self-developed analysis software.
It achieves full-area coverage, efficient measurement, high point cloud accuracy, strong detection reliability, strong adaptability, reduces labor costs, meets the needs of intelligent detection, and provides three-dimensional visualization results.
Smart Images
Figure CN122408705A_ABST