Three-Dimensional Laser Scanning-Based Method for Identifying Rock Discontinuities

Abstract

Manual measurement of rock discontinuities is time-consuming and subjective according to the experience of the surveyor. This work proposes a three-dimensional laser scanning-based method for the semi-automatic identification of rock discontinuities. Multisite cloud scanning is performed with real-time kinematic (RTK)-assisted orientation to estimate the rock fracturing degree; then, discontinuity orientations are extracted with the man–machine interactive method or automatic method. The proposed method was applied to actual examples to illustrate its accuracy at identifying rock discontinuities. The sensitivity of the identification accuracy to different parameters was investigated.

Urban Surface Deformation Management: Assessing Dangerous Subsidence Areas through Regional Surface Deformation, Natural Factors, and Human Activities

“…Three-dimensional laser scanning methods, photogrammetry, conventional geodetic technology, etc. can meet the needs of small-scale monitoring [22][23][24][25]. For large areas, methods such as Global Navigation Satellite System (GNSS) and Synthetic Aperture Radar Interferometry (InSAR) are required [26].…”