Innovative approach to strata reinforcement in coal mines with reference to evaluation cable bolts shear strength

Aziz, N. and Mirzaghorbanali, A. and Yang, G. and Khaleghparast, S. and Rasekh, H. (2018) Innovative approach to strata reinforcement in coal mines with reference to evaluation cable bolts shear strength. Journal of Mining and Environment. pp. 1-13. ISSN 2251-8592

Abstract

There is an increasing need to determine accurately the strength properties of tendons for an effective ground control on mines and underground structures as well as on modelling simulations. The strength properties of cables, used as cable bolts, have been evaluated mainly by their ultimate tensile strength, as this kind of test can be carried out in the field as well as in the laboratory. Only recently, there has been a growing interest in cable bolt failures in shear because of the documented field failure evidence. Accordingly, this paper reports various methods of shear testing of rock bolts and cables using different shear testing rigs, some have been developed by the rock bolting research team at the University of Wollongong. A programme of shear testing of a variety of cable bolts marketed in Australia was undertaken, the results of which were reported and conclusions were drawn. It was concluded that plain cable bolts were de-bonded during shearing when compared to spiral cables under the same testing conditions. In addition, both the single shear and double shear testing methodologies will result in the same outcome if there is no de-bonding, and a proper confinement is applied.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: First online 26 May 2018. Permanent restricted access to ArticleFirst Version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 12 Jun 2018 06:48
Last Modified: 12 Jun 2018 06:48
Uncontrolled Keywords: tendon technology, cable bolt, shear testing, pretension loads, concrete confinement
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091402 Geomechanics and Resources Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091405 Mining Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: doi:10.22044/jme.2018.6918.1525
URI: http://eprints.usq.edu.au/id/eprint/34215

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