The effects of installation procedure on bond characteristics of fully grouted rock bolts

Ma, Shuji and Aziz, Naj and Nemcik, Jan and Mirzaghorbanali, Ali (2017) The effects of installation procedure on bond characteristics of fully grouted rock bolts. Geotechnical Testing Journal, 40 (5). ISSN 1945-7545

Abstract

The bond characteristics of fully grouted rockbolts installed in steel tubes were investigated by bolt push tests. Steel tubes were inserted in a mine roadway roof to represent the confinement of rock boreholes. Rockbolts were installed in tubes using the installation technique of Australian underground mines. These tubes, with rockbolts inside, were retrieved from the field and brought back to the laboratory to be cut into 100-mm sections, which were then push tested. It was found that each bolt section had a distinct load-displacement profile, and that bond strength varied significantly along the bolt length. The factors influencing the bond strength of rockbolts were identified. The influence of the installation procedure on the bond strength of bolts in tubes was investigated.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 04 Jan 2018 02:06
Last Modified: 27 Apr 2018 02:08
Uncontrolled Keywords: fully grouted rockbolts; push tests; Spin to Stall; Spin and Hold; bond strength
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
Identification Number or DOI: 10.1520/GTJ20160239
URI: http://eprints.usq.edu.au/id/eprint/33149

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