3D Finite element and automatic constraints optimisation for geological stress modelling

A. Dargahizarandi, H. Roshan, H. Masoumi

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Knowledge of in-situ stress distribution plays a crucial role in subsurface engineering applications. The stress analysis in coal seams in particular poses considerable challenges because they can present a complex variation in stress state. Additionally, there are some uncertainties associated with the coal stress simulations linked to i) the lack of borehole stress constraints in the coal seam, ii) the lack of a proper automatic optimisation technique to meet available constraints in over-underlying strata of the coal seam and iii) the scarcity of open source numerical simulators capable of handling complex structural models and optimisation. In this study, the stress state of a coal mine in Australia is simulated by an in-house Finite Element(FE) numerical simulator (3DiStress) capable of importing complex geological models. The obtained numerical results demonstrate the considerable variations, particularly in the orientation of the horizontal in-situ stresses, well-aligned with the local stress map of the region.

Original languageEnglish
Title of host publicationNew Challenges in Rock Mechanics and Rock Engineering - Proceedings of the ISRM Rock Mechanics Symposium, EUROCK 2024
EditorsRoberto Tomás, Miguel Cano, Adrián Riquelme, José Luis Pastor, David Benavente, Salvador Ordóñez
PublisherCRC Press
Pages250-256
Number of pages7
ISBN (Print)9781032551449
DOIs
Publication statusPublished - 2024
EventEuropean Rock Mechanics Symposium 2024 - Alicante, Spain
Duration: 15 Jul 202419 Aug 2024
https://eurock2024.com (Website)

Conference

ConferenceEuropean Rock Mechanics Symposium 2024
Abbreviated titleEUROCK 2024
Country/TerritorySpain
CityAlicante
Period15/07/2419/08/24
Internet address

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