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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F16%3A00460444" target="_blank" >RIV/68145535:_____/16:00460444 - isvavai.cz</a>

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

DH - Mining industry including coal mining and processing

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Article name in the collection

Tampere, Finland Symposium Proceedings

ISBN

978-951-758-606-1

ISSN

0356-9403

e-ISSN

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Number of pages

10

Pages from-to

482-491

Publisher name

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

Place of publication

Tampere

Event location

Tampere

Event date

May 10, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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