APPLICABILITY OF 3D LASER SCANNING TECHNOLOGY IN MINING SUBSIDENCE MONITORING
Journal: Engineering Heritage Journal (GWK)
Author: Lihui Wang, Rongfei Yang, Yong Lei, Chengcheng Fan, Jibo Liu, Chuanjian Ren
This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
3D laser scanning technology has been applied in mining subsidence monitoring to some extents. Based on the existing observation conditions in the experimental area, the laser point cloud data was collected; Then the methods of point cloud data denoising, registration, filtering and subsidence basin extraction were discussed. Finally, the processing results were analyzed and tested. The results show that: (1) The orientation method has better applicability in mining subsidence monitoring based on TLS, and can avoid the error accumulation caused by the registration method; (2) The error rate of the Irregular Triangulation filtering method with additional constraints on the selection of ground points is 4.22%, which is better than the fitting method; (3) The subsidence basin obtained by TLS has high accuracy, and the mean square error of the difference between TLS and surface subsidence measured by leveling is 3.3 cm.