Rock Mass Characterisation using Scaled 3D images
An important contribution to rock mass characterisation is related to the mapping of discontinuities. Contact-free measuring principles tremendously improve conventional geological mapping due to the ability to take measurements fast and consistently with virtually no access and time restrictions, as well as to provide objective records of the rock mass. This paper describes an approach for rock face characterisation using scaled three-dimensional images. Two digital photos taken with a zoom-lensed, calibrated off-the-shelf camera serve for a three-dimensional reconstruction of the rock face geometry. The related principles originate from computer vision, allowing highly-flexible picture taking and automatic image processing. The rock face is represented on the computer by a photorealistic spatial representation – a 3D image. From it, measurements are taken by marking visible rock mass features, e.g. spatial orientations of joint surfaces and traces, as well as areas, lengths, or positions. Orientation measurements are depicted in hemispherical plots together with statistics on their spatial distribution and rock mass parameters such as joint spacing are provided. Two commercially available systems have been used for a variety of mapping projects proving their significant support to conventional field work.
A.Gaich M.P(o)sch W.Schubert
3G Software & Measurement GmbH, Austria Graz University of Technology, Austria
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）