Please use this identifier to cite or link to this item: http://hdl.handle.net/10071/10594
Author(s): Resende, R.
Muralha, J.
Ramos, A. L.
Fortunato, E.
Date: 2015
Title: Rock joint topography: three-dimensional scanning and numerical analysis
Volume: 5
Number: 4
Pages: 318 - 323
ISSN: 2049-825X
DOI (Digital Object Identifier): 10.1680/jgele.15.00046
Keywords: Laboratory equipment
Rocks/rock mechanics
Water flow
Abstract: Joints are the most defining features of fractured rock masses. It has been well established that joint behaviour is mainly defined by wall topography, which is difficult to measure and define. Previous works have employed both contact and non-contact scanning methods and multiple approaches to the analysis of rock surfaces, but a majority focused exclusively on individual surface characterisation without appraising wall–wall interaction. This paper presents an equipment that is easily available for laboratory scanning of rock joints. Surface topographies of eight granite rock joints (16 surfaces, made available to other researchers) are statistically analysed separately and jointly by applying a fitting algorithm to match the top and bottom surfaces that allow mapping and calculation of contact areas and void volumes during closure. Results show that traditional methods for joint profile analysis are not applicable to three-dimensional surfaces, and that often specific details of joint surfaces have opposing influence on the mechanical, dynamic or hydraulic behaviours.
Peerreviewed: yes
Access type: Embargoed Access
Appears in Collections:ISTAR-RI - Artigos em revistas científicas internacionais com arbitragem científica

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