Strength anisotropy of joints and faults

PROISL, Tomáš a Rostislav MELICHAR. Strength anisotropy of joints and faults. In CETEG 2018 16th Meeting of the Central European Tectonic Groups. 2018.

Základní údaje

Originální název

Strength anisotropy of joints and faults

Název česky

Anizotropie pevnosti puklin a zlomů

Autoři

PROISL, Tomáš a Rostislav MELICHAR

Vydání

CETEG 2018 16th Meeting of the Central European Tectonic Groups, 2018

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Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10505 Geology

Stát vydavatele

Polsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova česky

puklinová pevnost, anizotropie pevnosti, zlom

Klíčová slova anglicky

strength anisotropy, joint, fault

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Anotace

V originále

Joints and faults are the most common brittle structures, which disrupt the continuity of the rocks. This lower rocks cohesion has its origin in less strength of joint or fault surfaces in comparison to unfractured rock. Joints are usually considered to be isotropic but this point of view may be used only in the first approximation, but it is very simplified in fact. We tried to testify and quantified idea of shear strength anisotropy of such real fractures and comparised with two types of manmade ideal rupture models from gypsum. Result of testing indicates some unknown strength behavior of striated planes. It is evident, that shear strength of real and gypsum ruptures is anisotropic. Very important factor is the surface roughness. Absolute shear strength is affected by stria size (bigger strias – smaller extremes) and anisotropy of ideal rupture ,odels and real faults works similar way.