RMTSA: A software for rapid geometric modelling of mountain tunnel section and over/under excavation analysis based on 3D laser scanning

Laser 3D scanning technology is currently used in various engineering measurements. Based on this technology, this article develops a software called RMTSA (Rapid Mountain Tunnel Section Analyzer) for geometric measurement of mountain tunnel section and conducting quantitative analysis of over/under excavation. The content includes automatic equidistant continuous cutting of tunnel point cloud data, comparison between tunnel section point cloud data and design curves, and quantitative display of tunnel over/under excavation situations. This software enables the automatic acquisition of mountain tunnel section data, allowing for rapid measurement of the geometric dimensions of long-distance tunnel sections and enhancing practical engineering applications.