Stability analysis of rock masses subjected to underground excavations

Xiangjian Dong

doi:10.26182/5e99206fb3774

Stability analysis of rock masses subjected to underground excavations

Xiangjian Dong

School of Engineering

Research output: Thesis › Doctoral Thesis

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Abstract

This dissertation investigates the instability of rock masses in underground excavations commonly encountered in engineering applications including underground mining, transportation, waste material disposal, oil and/or gas storage. These excavations are usually arbitrary-shaped openings. This research introduces new analytic expressions for the stress and energy distributions around such openings. The proposed solutions use advanced poro-mechanics and take into account liner reinforcement systems. A novel energy index is proposed to provide new insights into such excavation-induced instability. For further support design, this thesis introduces a user-friendly experimentally proven 3D bolts reinforcement solver, using a finite element framework.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Karrech, Ali, Supervisor Elchalakani, Mohamed, Supervisor Basarir, Hakan, Supervisor
Award date	3 Mar 2020
DOIs	https://doi.org/10.26182/5e99206fb3774
Publication status	Unpublished - 2020

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10.26182/5e99206fb3774

TH20 47 THESIS - DOCTOR OF PHILOSOPHY - DONG Xiangjian - 2020
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Cite this

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title = "Stability analysis of rock masses subjected to underground excavations",

abstract = "This dissertation investigates the instability of rock masses in underground excavations commonly encountered in engineering applications including underground mining, transportation, waste material disposal, oil and/or gas storage. These excavations are usually arbitrary-shaped openings. This research introduces new analytic expressions for the stress and energy distributions around such openings. The proposed solutions use advanced poro-mechanics and take into account liner reinforcement systems. A novel energy index is proposed to provide new insights into such excavation-induced instability. For further support design, this thesis introduces a user-friendly experimentally proven 3D bolts reinforcement solver, using a finite element framework.",

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AB - This dissertation investigates the instability of rock masses in underground excavations commonly encountered in engineering applications including underground mining, transportation, waste material disposal, oil and/or gas storage. These excavations are usually arbitrary-shaped openings. This research introduces new analytic expressions for the stress and energy distributions around such openings. The proposed solutions use advanced poro-mechanics and take into account liner reinforcement systems. A novel energy index is proposed to provide new insights into such excavation-induced instability. For further support design, this thesis introduces a user-friendly experimentally proven 3D bolts reinforcement solver, using a finite element framework.

KW - underground excavations

KW - rocks

KW - arbitrary-shaped openings

KW - tunnel

KW - Stability analysis

U2 - 10.26182/5e99206fb3774

DO - 10.26182/5e99206fb3774

M3 - Doctoral Thesis

ER -

Stability analysis of rock masses subjected to underground excavations

Abstract

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