Modelling the non-standard in-situ loading paths in 3D stress space through laboratory triaxial experiments

Kód výsledku v IS VaVaI

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Výsledek na webu

<a href="https://dl.dropboxusercontent.com/u/27909263/RS2016%20Tampere%20Proceedings.pdf" target="_blank" >https://dl.dropboxusercontent.com/u/27909263/RS2016%20Tampere%20Proceedings.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modelling the non-standard in-situ loading paths in 3D stress space through laboratory triaxial experiments

Popis výsledku v původním jazyce

Majority of experimental strength and deformational characteristics of rocks are obtained from uniaxial tests,nmainly from compression tests, or through the particular triaxial experiments commonly known as ConventionalnTriaxial Compression (CTC). The procedure of CTC test usually consists of initial compression up to isotropicnpressure imitating e.g. a component of geostatic stress at a given depth, and subsequent application ofnadditional axial loading, which can be a model of anisotropic stress conditions or differential stresses originatingnfrom inhomogeneities or movement of surrounding rock masses. This CTC test, however, cannot always portraynthe in-situ conditions. For example such axial compression does not reflect the real stress paths during the rocknburst. More appropriate experimental model for the phenomenon is axial stress reduction inducing axialnextension in test named Reduced Triaxial Extension (RTE). Stress paths representing axial extension are alsonimportant in case of core disking. In addition to CTC and RTE paths, the next complementary paths can benconsidered: Conventional Triaxial Extension (CTE) or Reduced Triaxial Compression (RTC) using increasing orndecreasing the lateral stress respectively. This work discusses the experimental methodology and technicalnsolutions prepared for realization of several special loading paths in laboratory triaxial experiment. n

Název v anglickém jazyce

Modelling the non-standard in-situ loading paths in 3D stress space through laboratory triaxial experiments

Popis výsledku anglicky

Majority of experimental strength and deformational characteristics of rocks are obtained from uniaxial tests,nmainly from compression tests, or through the particular triaxial experiments commonly known as ConventionalnTriaxial Compression (CTC). The procedure of CTC test usually consists of initial compression up to isotropicnpressure imitating e.g. a component of geostatic stress at a given depth, and subsequent application ofnadditional axial loading, which can be a model of anisotropic stress conditions or differential stresses originatingnfrom inhomogeneities or movement of surrounding rock masses. This CTC test, however, cannot always portraynthe in-situ conditions. For example such axial compression does not reflect the real stress paths during the rocknburst. More appropriate experimental model for the phenomenon is axial stress reduction inducing axialnextension in test named Reduced Triaxial Extension (RTE). Stress paths representing axial extension are alsonimportant in case of core disking. In addition to CTC and RTE paths, the next complementary paths can benconsidered: Conventional Triaxial Extension (CTE) or Reduced Triaxial Compression (RTC) using increasing orndecreasing the lateral stress respectively. This work discusses the experimental methodology and technicalnsolutions prepared for realization of several special loading paths in laboratory triaxial experiment. n

Druh

D - Stať ve sborníku

CEP obor

DH - Báňský průmysl včetně těžby a zpracování uhlí

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Tampere, Finland Symposium Proceedings

ISBN

978-951-758-606-1

ISSN

0356-9403

e-ISSN

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Počet stran výsledku

10

Strana od-do

482-491

Název nakladatele

The Finish National Group of ISRM and Finish Association of Civil Engineers RIL

Místo vydání

Tampere

Místo konání akce

Tampere

Datum konání akce

10. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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