Finite element simulation of fully grouted rock bolts behaviour across varied bore hole diameters
Paper
Paper/Presentation Title | Finite element simulation of fully grouted rock bolts behaviour across varied bore hole diameters |
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Presentation Type | Paper |
Authors | Jodeiri Shokri, Behshad, Mirzaghorbanali, Ali, Karunasena, Waru, McDougall, Kevin, Aziz, Naj, Entezam, Shima, Nourizadeh, Hadi, Motallebiyan, Amin and Entezam, Alireza |
Editors | Aziz, N. and Mirzaghorbanali, A. |
Journal or Proceedings Title | Proceedings of the 2024 Resource Operators Conference |
Journal Citation | pp. 195-202 |
Number of Pages | 8 |
Year | 2024 |
Publisher | University of Wollongong |
Place of Publication | Australia |
ISBN | 9781741283969 |
9781741283952 | |
Web Address (URL) of Paper | https://ro.uow.edu.au/coal/911/ |
Web Address (URL) of Conference Proceedings | https://ro.uow.edu.au/coal/ |
Conference/Event | 2024 Resource Operators Conference (ROC2024) |
Event Details | 2024 Resource Operators Conference (ROC2024) Delivery In person Event Date 13 to end of 16 Feb 2024 Event Location Wollongong, Australia Event Venue University of Wollongong |
Abstract | This paper introduces a finite element (FE) method to simulate the impact of confinement conditions on the axial load-bearing capacity of fully grouted rock bolts. The study utilises a combination of experimental and numerical modelling techniques. For this purpose, two different sizes of steel sleeves were used as confinements with a diameter of 23 mm and 50 mm. The samples were cured after embedding and grouting the bolt for 28 days. Subsequently, pull-out tests were conducted to assess the axial load-bearing capacity of the samples. The results showed a direct correlation between increased confinement diameter and higher values of ultimate pull-out capacities. In addition to the experimental tests, numerical models employing ABAQUS software were developed to simulate and analyse the debonding mechanism along the bolts. By defining the appropriate model geometry, materials properties, boundary conditions, and interactions, the simulation revealed that the debonding mechanism occurred at the bolt-grout interface. Eventually, a comparison between the load-displacement curves derived from the experimental tests and the numerical simulations highlighted the effectiveness of the numerical model in accurately representing the axial load transfer mechanism within the fully encapsulated rock bolts. |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401902. Geomechanics and resources geotechnical engineering |
400502. Civil geotechnical engineering | |
401905. Mining engineering | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions, but may be accessed online. Please see the link in the URL field. |
Byline Affiliations | School of Engineering |
Centre for Future Materials | |
School of Surveying and Built Environment | |
University of Wollongong |
https://research.usq.edu.au/item/z7975/finite-element-simulation-of-fully-grouted-rock-bolts-behaviour-across-varied-bore-hole-diameters
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