Evaluation, and management of unstable rock slopes by 3D laser scanning

A.K. Turner, J. Kemeny, S. Slob, H.R.G.K. Hack

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Population growth frequently causes expansion of urban populations and associated transportation facilities onto formerly uninhabited slopes, where naturally occurring and constructed rock faces present potential hazards from rock fall and rock face instability. Rock fall management and mitigation programs are widely used to ensure public safety, to provide efficient rock face maintenance, and to proactively address potential rock fall hazards. These programs require comprehensive geologic characterization of individual rock slopes. New ways of collecting data are urgently required to accelerate field data acquisition, reduce identification difficulties, eliminate safety constraints, and remove human bias and subjectivity in the data. Exposed rock surfaces can be scanned quickly and accurately using a ground-based laser scanner, resulting in a collection of millions of discrete points each having a 3D value relative to the scanner's position. These "point clouds" have high spatial resolution, with adjacent points often only a centimeter or two apart. Relatively small surface features and discontinuities are readily identified. Algorithms have been developed to support semi-automated processes for orienting the point cloud, creating a polygonal surface model from the point cloud, determining rock discontinuity information, and defining block size distributions.
Original languageEnglish
Title of host publicationIAEG 2006
Subtitle of host publicationPre-proceedings 10th international congress International Association of Engineering Geology : Engineering geology for tomorrow's cities, 6-10 September, Nottingham, United Kingdom
Place of PublicationLondon, UK
PublisherGeological Society of London
Number of pages11
EditionCD-ROM
Publication statusPublished - 2006
Event10th Congress of the International Association for Engineering Geology and the Environment, IAEG 2006 - Nottingham, United Kingdom
Duration: 6 Sept 200610 Sept 2006
Conference number: 10

Conference

Conference10th Congress of the International Association for Engineering Geology and the Environment, IAEG 2006
Abbreviated titleIAEG
Country/TerritoryUnited Kingdom
CityNottingham
Period6/09/0610/09/06

Keywords

  • ESA
  • ADLIB-ART-1343

Fingerprint

Dive into the research topics of 'Evaluation, and management of unstable rock slopes by 3D laser scanning'. Together they form a unique fingerprint.

Cite this