A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion

Many rock types have naturally occurring inherent anisotropic planes, such as bedding planes, foliation, or flow structures. Such characteristic induces directional features and anisotropy in rocks' strength and deformational properties. The Hoek–Brown (H–B) failure criterion is an empirical st...

Full description

Bibliographic Details
Main Authors:	Mohamed A. Ismael, Hassan F. Imam, Yasser El-Shayeb
Format:	Article
Language:	English
Published:	Elsevier 2014-10-01
Series:	Journal of Rock Mechanics and Geotechnical Engineering
Subjects:	Anisotropy Hoek–Brown failure criterion Rock mechanics Anisotropic parameter Degree of anisotropy
Online Access:	http://www.sciencedirect.com/science/article/pii/S1674775514000675

id	doaj-7544311810ef4d16979e7f59a7d55bbc
record_format	Article
spelling	doaj-7544311810ef4d16979e7f59a7d55bbc2020-11-24T21:47:53ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552014-10-016548649210.1016/j.jrmge.2014.06.003A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterionMohamed A. IsmaelHassan F. ImamYasser El-ShayebMany rock types have naturally occurring inherent anisotropic planes, such as bedding planes, foliation, or flow structures. Such characteristic induces directional features and anisotropy in rocks' strength and deformational properties. The Hoek–Brown (H–B) failure criterion is an empirical strength criterion widely applied to rock mechanics and engineering. A direct modification to H–B failure criterion to account for rock anisotropy is considered as the base of the research. Such modification introduced a new definition of the anisotropy as direct parameter named the anisotropic parameter (Kβ). However, the computation of this parameter takes much experimental work and cannot be calculated in a simple way. The aim of this paper is to study the trend of the relation between the degree of anisotropy (Rc) and the minimum value of anisotropic parameter (Kmin), and to predict the Kmin directly from the uniaxial compression tests instead of triaxial tests, and also to decrease the amount of experimental work.http://www.sciencedirect.com/science/article/pii/S1674775514000675AnisotropyHoek–Brown failure criterionRock mechanicsAnisotropic parameterDegree of anisotropy
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Mohamed A. Ismael Hassan F. Imam Yasser El-Shayeb
spellingShingle	Mohamed A. Ismael Hassan F. Imam Yasser El-Shayeb A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion Journal of Rock Mechanics and Geotechnical Engineering Anisotropy Hoek–Brown failure criterion Rock mechanics Anisotropic parameter Degree of anisotropy
author_facet	Mohamed A. Ismael Hassan F. Imam Yasser El-Shayeb
author_sort	Mohamed A. Ismael
title	A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion
title_short	A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion
title_full	A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion
title_fullStr	A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion
title_full_unstemmed	A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion
title_sort	simplified approach to directly consider intact rock anisotropy in hoek–brown failure criterion
publisher	Elsevier
series	Journal of Rock Mechanics and Geotechnical Engineering
issn	1674-7755
publishDate	2014-10-01
description	Many rock types have naturally occurring inherent anisotropic planes, such as bedding planes, foliation, or flow structures. Such characteristic induces directional features and anisotropy in rocks' strength and deformational properties. The Hoek–Brown (H–B) failure criterion is an empirical strength criterion widely applied to rock mechanics and engineering. A direct modification to H–B failure criterion to account for rock anisotropy is considered as the base of the research. Such modification introduced a new definition of the anisotropy as direct parameter named the anisotropic parameter (Kβ). However, the computation of this parameter takes much experimental work and cannot be calculated in a simple way. The aim of this paper is to study the trend of the relation between the degree of anisotropy (Rc) and the minimum value of anisotropic parameter (Kmin), and to predict the Kmin directly from the uniaxial compression tests instead of triaxial tests, and also to decrease the amount of experimental work.
topic	Anisotropy Hoek–Brown failure criterion Rock mechanics Anisotropic parameter Degree of anisotropy
url	http://www.sciencedirect.com/science/article/pii/S1674775514000675
work_keys_str_mv	AT mohamedaismael asimplifiedapproachtodirectlyconsiderintactrockanisotropyinhoekbrownfailurecriterion AT hassanfimam asimplifiedapproachtodirectlyconsiderintactrockanisotropyinhoekbrownfailurecriterion AT yasserelshayeb asimplifiedapproachtodirectlyconsiderintactrockanisotropyinhoekbrownfailurecriterion AT mohamedaismael simplifiedapproachtodirectlyconsiderintactrockanisotropyinhoekbrownfailurecriterion AT hassanfimam simplifiedapproachtodirectlyconsiderintactrockanisotropyinhoekbrownfailurecriterion AT yasserelshayeb simplifiedapproachtodirectlyconsiderintactrockanisotropyinhoekbrownfailurecriterion
_version_	1725894906137804800

A simplified approach to directly consider intact rock anisotropy in Hoek–Brown failure criterion

Similar Items