EXPERIMENTAL STUDY OF ROCK RUPTURES SHEAR STRENGTH ANISOTROPY

J 2022

EXPERIMENTAL STUDY OF ROCK RUPTURES SHEAR STRENGTH ANISOTROPY

PROISL, Tomáš a Rostislav MELICHAR

Základní údaje

Originální název

EXPERIMENTAL STUDY OF ROCK RUPTURES SHEAR STRENGTH ANISOTROPY

Autoři

PROISL, Tomáš (203 Česká republika, garant, domácí) a Rostislav MELICHAR (203 Česká republika, domácí)

Vydání

Acta Geodynamica et Geomaterialia, Praha, Academy of Science of the Czech Republic, 2022, 1214-9705

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 0.900

Kód RIV

RIV/00216224:14310/22:00127345

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.13168/AGG.2022.0001

UT WoS

000821862200002

EID Scopus

2-s2.0-85133143746

Klíčová slova anglicky

Shear strength; Anisotropy; Joints; Faults

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 12. 2022 12:00, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Joints significantly reduce rock cohesion compared to unfractured rock, but the question is what effect the possible anisotropy of the shear strength of different types of rupture has on possible subsequent failure. Both natural samples of granodiorite with natural joints and fault surfaces and gypsum models have been tested on the Matest A129 Rock shear box apparatus. The shear strength of preexisting ruptures was measured under a fixed normal stress component. The anisotropy of the shear strength of the joints and fault surfaces reached more than 60 % of maximum strength, which is a very important value for solving structural loads. The shear strength was analyzed with polar plots. The pattern of the real joints typically showed a teardrop shape with one peak of strength in a certain direction and a minimum in the opposite direction. On the contrary, striated fault surfaces are characterized by two axial directions of minimal shear strength, i.e., longitudinal and transverse, and by two axial oblique directions with maximal shear strength, so the strength distribution in the polar graph has a four-cornered shape. The study showed that the anisotropy of the shear strength of various types of ruptures is their important feature.

Návaznosti

EE2.3.20.0052, projekt VaV

Název: Výzkumný tým pro ukládání radioaktivních odpadů a jadernou bezpečnost

GC22-24206J, projekt VaV

Název: Koseismické sesuvy v pohořích aktivních a stabilizovaných akrečních klínů

Investor: Grantová agentura ČR, Koseismické sesuvy v pohořích aktivních a stabilizovaných akrečních klínů, Taiwan/MOST

Citovat

PROISL, Tomáš a Rostislav MELICHAR. EXPERIMENTAL STUDY OF ROCK RUPTURES SHEAR STRENGTH ANISOTROPY. Acta Geodynamica et Geomaterialia. Praha: Academy of Science of the Czech Republic, 2022, roč. 19, č. 2, s. 111-117. ISSN 1214-9705. Dostupné z: https://doi.org/10.13168/AGG.2022.0001.

@article{2237240,
   author = {Proisl, Tomáš and Melichar, Rostislav},
   article_location = {Praha},
   article_number = {2},
   doi = {https://doi.org/10.13168/AGG.2022.0001},
   keywords = {Shear strength; Anisotropy; Joints; Faults},
   language = {eng},
   issn = {1214-9705},
   journal = {Acta Geodynamica et Geomaterialia},
   title = {EXPERIMENTAL STUDY OF ROCK RUPTURES SHEAR STRENGTH ANISOTROPY},
   url = {https://www.irsm.cas.cz/index_en.php?page=acta_detail_doi&id=431},
   volume = {19},
   year = {2022}
}

TY  - JOUR
ID  - 2237240
AU  - Proisl, Tomáš - Melichar, Rostislav
PY  - 2022
TI  - EXPERIMENTAL STUDY OF ROCK RUPTURES SHEAR STRENGTH ANISOTROPY
JF  - Acta Geodynamica et Geomaterialia
VL  - 19
IS  - 2
SP  - 111-117
EP  - 111-117
PB  - Academy of Science of the Czech Republic
SN  - 12149705
KW  - Shear strength
KW  - Anisotropy
KW  - Joints
KW  - Faults
UR  - https://www.irsm.cas.cz/index_en.php?page=acta_detail_doi&id=431
N2  - Joints significantly reduce rock cohesion compared to unfractured rock, but the question is what effect the possible anisotropy of the shear strength of different types of rupture has on possible subsequent failure. Both natural samples of granodiorite with natural joints and fault surfaces and gypsum models have been tested on the Matest A129 Rock shear box apparatus. The shear strength of preexisting ruptures was measured under a fixed normal stress component. The anisotropy of the shear strength of the joints and fault surfaces reached more than 60 % of maximum strength, which is a very important value for solving structural loads. The shear strength was analyzed with polar plots. The pattern of the real joints typically showed a teardrop shape with one peak of strength in a certain direction and a minimum in the opposite direction. On the contrary, striated fault surfaces are characterized by two axial directions of minimal shear strength, i.e., longitudinal and transverse, and by two axial oblique directions with maximal shear strength, so the strength distribution in the polar graph has a four-cornered shape. The study showed that the anisotropy of the shear strength of various types of ruptures is their important feature.
ER  -

PROISL, Tomáš a Rostislav MELICHAR. EXPERIMENTAL STUDY OF ROCK RUPTURES SHEAR STRENGTH ANISOTROPY. \textit{Acta Geodynamica et Geomaterialia}. Praha: Academy of Science of the Czech Republic, 2022, roč.~19, č.~2, s.~111-117. ISSN~1214-9705. Dostupné z: https://doi.org/10.13168/AGG.2022.0001.

Přehled o publikaci