| Autor: |
Dagmar HAVLÍČKOVÁ, Martin ZÁVACKÝ, Lukáš KRMÍČEK |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
GeoScience Engineering, Vol 65, Iss 1, Pp 46-52 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1802-5420 |
| DOI: |
10.35180/gse-2019-0005 |
| Popis: |
The paper brings the description of the mechanical properties of greywacke sampled in Kobeřice quarry (Lower Carboniferous Culm Basin, Drahany Uplands, Bohemian Massif). Anisotropy of mechanical properties was identified from a series of laboratory tests of oriented samples using the following procedures: (1) indirect tensile testing, (2) uniaxial compressive testing and (3) triaxial compressive testing. Parameters of Mohr-Coulomb and Hoek-Brown failure criteria were determined by the evaluation of the obtained laboratory data. The tested greywacke performed relatively high uniaxial compressive strength, roughly 200 MPa. Better fitting by Mohr-Coulomb criterion was identified than by Hoek-Brown one within the investigated interval of confining stresses (0-15 MPa). In addition, Schmidt hammer test was carried out with a comparison of several correlation relationships to uniaxial compressive strength which was compared with the directly obtained value from laboratory tests. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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