Modelling of rebar and cable bolt behaviour in tension/shear

Li, Xuwei and Nemcik, Jan and Aziz, Naj and Mirzaghorbanali, Ali and Rasekh, Haleh (2015) Modelling of rebar and cable bolt behaviour in tension/shear. In: 2015 Coal Operators' Conference, 11-13 Feb 2015, Wollongong, NSW, Australia.

Abstract

Cable bolting and rock/rebar bolting are the two main reinforcement techniques used in underground coal mines to maintain the stability of openings. Due to the structural features of cable strands, cables and solid bolts behave differently in reinforcing rock strata. Since the generation of a cable model is different in a numerical program, and especially impossible in a 2D program, some researchers tend to replace cable bolts with rebar bolts in numerical models, which is still pretty suspicious. To compare their performance differences when subjected in tension and/or in shear, numerical models of cable and rebar bolt were built and analysed using Flac3D program. The generated models of cables and rebar bolts were assigned identical geometrical dimensions and basic mechanical properties to ensure comparability. Attention was mainly given to the strength and stiffness of cables and rebar bolts both in tension and in shear. Conclusions are drawn from these models, which can be a reference for other studies in this area.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: 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 their work.
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 26 Apr 2019 02:58
Last Modified: 24 Jun 2019 02:58
Uncontrolled Keywords: underground coal mines; reinforcements; cable bolting; rebar bolting
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091405 Mining Engineering
URI: http://eprints.usq.edu.au/id/eprint/36326

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