The Angle between the Sample Surface and the Shear Plane; Its Influence on the Direct Shear Strength of Jointed Granitic Rocks and Opalinus Claystone

Ildikó Buocz, Nikoletta Rozgonyi-Boissinot, A. Török

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Shear strength along rock discontinuities by means of direct shear strength tests were performed on granitic and clayey rocks. Both rock types represent potential host rocks of radioactive waste. The paper focuses on the effect of one parameter in particular influencing the shear strength: the angle enclosed by the plane of the sample surface and the shear plane, in the direction of shear. 3D surface roughness measurements were carried out on 18 Opalinus Claystone sample (Switzerland) and 6 on granitic rock sample (Hungary) surfaces. An interval of angle was analyzed in the direction of shear and against the direction of shear. Direct shear strength tests were carried out under constant normal loading (CNL) conditions, the influence of the angle on the shear strength values were determined. Additionally, a percentage value was calculated for how much the range of both peak and residual shear strength values change, with taking into consideration the effect of upslope and downslope shear.

Original languageEnglish
Pages (from-to)1008-1014
Number of pages7
JournalProcedia Engineering
Volume191
DOIs
Publication statusPublished - Jan 1 2017
EventISRM European Rock Mechanics Symposium, EUROCK 2017 - Ostrava, Czech Republic
Duration: Jun 20 2017Jun 22 2017

Keywords

  • 3D surface detection
  • claystones
  • constant normal load
  • direct shear strength
  • Granites
  • shearing in angle

ASJC Scopus subject areas

  • Engineering(all)

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