The shear strength of bedding planes in shale materials of the Hamersley Group in the Pilbara

Arturo Maldonado Neyra

doi:10.26182/n1p7-zr25

The shear strength of bedding planes in shale materials of the Hamersley Group in the Pilbara

Arturo Maldonado Neyra

School of Engineering

Research output: Thesis › Doctoral Thesis

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Abstract

The shear strength of bedding planes was measured from direct shear testing of natural and artificialsurfaces. All testing was conducted at natural moisture content with very slow shear strain to permitpore pressure dissipation. All stresses were dilation corrected to estimate the basic friction angle ofbedding and artificial surfaces. The mineralogy of bedding surfaces presents very good relationshipwith dilation corrected friction angles, as derived from laboratory testing. In fresh and slightlyweathered shales, bedding planes present pre-shearing history that causes low dilation angles.Within moderately and highly weathered shales, bedding planes are coated by decomposed rock

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Dight, Phil, Supervisor Mercer, Ken, Supervisor Woodward, Kyle, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	23 Aug 2023
DOIs	https://doi.org/10.26182/n1p7-zr25
Publication status	Unpublished - 2022

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THESIS - DOCTOR OF PHILOSOPHY - MALDONADO NEYRA Arturo Fausto - 2022 - Part 1-2
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title = "The shear strength of bedding planes in shale materials of the Hamersley Group in the Pilbara",

abstract = "The shear strength of bedding planes was measured from direct shear testing of natural and artificialsurfaces. All testing was conducted at natural moisture content with very slow shear strain to permitpore pressure dissipation. All stresses were dilation corrected to estimate the basic friction angle ofbedding and artificial surfaces. The mineralogy of bedding surfaces presents very good relationshipwith dilation corrected friction angles, as derived from laboratory testing. In fresh and slightlyweathered shales, bedding planes present pre-shearing history that causes low dilation angles.Within moderately and highly weathered shales, bedding planes are coated by decomposed rock",

keywords = "Shear strength, Rock Mechanics, Shales, Pilbara",

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school = "The University of Western Australia",

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AB - The shear strength of bedding planes was measured from direct shear testing of natural and artificialsurfaces. All testing was conducted at natural moisture content with very slow shear strain to permitpore pressure dissipation. All stresses were dilation corrected to estimate the basic friction angle ofbedding and artificial surfaces. The mineralogy of bedding surfaces presents very good relationshipwith dilation corrected friction angles, as derived from laboratory testing. In fresh and slightlyweathered shales, bedding planes present pre-shearing history that causes low dilation angles.Within moderately and highly weathered shales, bedding planes are coated by decomposed rock

KW - Shear strength

KW - Rock Mechanics

KW - Shales

KW - Pilbara

U2 - 10.26182/n1p7-zr25

DO - 10.26182/n1p7-zr25

M3 - Doctoral Thesis

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The shear strength of bedding planes in shale materials of the Hamersley Group in the Pilbara

Abstract

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