Publication detail

Mechanical properties of granulite from Horní Bory in Bohemian Massif

HAVLÍČKOVÁ, D. ZÁVACKÝ, M. KRMÍČEK, L. BLÜMEL, M. ROZSYPALOVÁ, I.

Original Title

Mechanical properties of granulite from Horní Bory in Bohemian Massif

English Title

Mechanical properties of granulite from Horní Bory in Bohemian Massif

Type

journal article - other

Language

en

Original Abstract

Granulite represents one of the favourite rock types for the construction of an underground nuclear waste repository in the Czech Republic. Granulite from the Bohemian Massif (locality Horní Bory) was investigated in this study, with a special focus on the evaluation of the rock anisotropy. Investigated rock represents typical fine-grained foliated felsic granulite with principal mineral association: quartz + feldspar (K-feldspar > plagioclase) + garnet + biotite + kyanite and/or sillimanite. Anisotropy was identified in the rock fabric both at macroscopic and microscopic scale. During the laboratory testing, granulite reached considerable high uniaxial compressive strength (UCS) - up to 240 MPa; and brittle type (Class II) of failure occurred. We found that variability of the UCS and Young's modulus were relatively low. On the other hand, variability of the Poisson's ratio and the constants in Hoek-Brown failure criterion in triaxial loading were significantly high.

English abstract

Granulite represents one of the favourite rock types for the construction of an underground nuclear waste repository in the Czech Republic. Granulite from the Bohemian Massif (locality Horní Bory) was investigated in this study, with a special focus on the evaluation of the rock anisotropy. Investigated rock represents typical fine-grained foliated felsic granulite with principal mineral association: quartz + feldspar (K-feldspar > plagioclase) + garnet + biotite + kyanite and/or sillimanite. Anisotropy was identified in the rock fabric both at macroscopic and microscopic scale. During the laboratory testing, granulite reached considerable high uniaxial compressive strength (UCS) - up to 240 MPa; and brittle type (Class II) of failure occurred. We found that variability of the UCS and Young's modulus were relatively low. On the other hand, variability of the Poisson's ratio and the constants in Hoek-Brown failure criterion in triaxial loading were significantly high.

Keywords

granulite, mineral properties, foliation, uniaxial compressive strength, triaxial compressive strength, anisotropic properties

Released

16.12.2019

Publisher

Technical University of Ostrava

Location

Ostrava

Pages from

38

Pages to

53

Pages count

16

URL

Documents

BibTex


@article{BUT161225,
  author="Dagmar {Havlíčková} and Martin {Závacký} and Lukáš {Krmíček} and Manfred {Blümel} and Iva {Rozsypalová}",
  title="Mechanical properties of granulite from Horní Bory in Bohemian Massif",
  annote="Granulite represents one of the favourite rock types for the construction of an underground nuclear waste repository in the Czech Republic. Granulite from the Bohemian Massif (locality Horní Bory) was investigated in this study, with a special focus on the evaluation of the rock anisotropy. Investigated rock represents typical fine-grained foliated felsic granulite with principal mineral association: quartz + feldspar (K-feldspar > plagioclase) + garnet + biotite + kyanite and/or sillimanite. Anisotropy was identified in the rock fabric both at macroscopic and microscopic scale. During the laboratory  testing, granulite reached considerable high uniaxial compressive strength (UCS) - up to 240 MPa; and brittle type (Class II) of failure occurred. We found that variability of the UCS and Young's modulus were relatively low. On the other hand, variability of the Poisson's ratio and the constants in Hoek-Brown failure criterion in triaxial loading were significantly high.",
  address="Technical University of Ostrava",
  chapter="161225",
  doi="10.35180/gse-2019-0022",
  howpublished="online",
  institution="Technical University of Ostrava",
  number="4",
  volume="65",
  year="2019",
  month="december",
  pages="38--53",
  publisher="Technical University of Ostrava",
  type="journal article - other"
}