Strength properties of fibre glass dowels used for strata reinforcement in coal mines
Paper
Paper/Presentation Title | Strength properties of fibre glass dowels used for |
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Presentation Type | Paper |
Authors | Gilbert, David (Author), Mirzaghorbanali, Ali (Author), Li, Xuwei (Author), Rasekh, Haleh (Author), Aziz, Naj (Author) and Nemcik, Jan (Author) |
Editors | Aziz, Naj and Kininmonth, Bob |
Journal or Proceedings Title | Proceedings of the 2015 Coal Operators' Conference |
ERA Conference ID | 60723 |
Number of Pages | 11 |
Year | 2015 |
Place of Publication | Wollongong, Australia |
ISBN | 9781925100235 |
Web Address (URL) of Paper | http://ro.uow.edu.au/coal/586 |
Conference/Event | 2015 Coal Operators' Conference |
Underground Coal Operators' Conference | |
Event Details | 2015 Coal Operators' Conference Parent Coal Operators' Conference Event Date 11 to end of 13 Feb 2015 Event Location Wollongong, Australia |
Event Details | Underground Coal Operators' Conference |
Abstract | Glass-Reinforced Polymer (GRP) bolts, commonly known as Fibre Glass (FG) dowels are increasingly applied for strata reinforcement in mines. The most popular dowels used in coal mines are the 22 mm diameter fully threaded type. A series of tests were undertaken to evaluate various strength properties of FG dowels. These include tensile failure tests by the double-embedment method, single and double guillotine shear tests, double shear tests in concrete medium and punch shear tests. Punch shear tests were used to evaluate the dowel shear strength parallel and perpendicular to the fibre glass strands or elements direction of extrusion. The study found that the tensile strength of the 22 mm diameter fibre glass dowels was in the order of 30 t. In the shear testing, the peak shear load was influence by the encapsulation grout type and the level of fibre glass axial pre-tension. Also, there was a nearly fivefold difference in the shear strength value of fibre glass dowels tested parallel as against perpendicular to the dowel axis. |
Keywords | glass-reinforced polymer bolts; fibre glass dowels; strata reinforcement |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
401905. Mining engineering | |
Public Notes | No paper in these proceedings is to be re-published unless with written permission from the conference organisers and/or the original authors who maintain the copyright for |
Byline Affiliations | University of Wollongong |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5363/strength-properties-of-fibre-glass-dowels-used-for-strata-reinforcement-in-coal-mines
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