Journal Published Online: 07 September 2017
Volume 40, Issue 5

The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts

CODEN: GTJODJ

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.

Author Information

Ma, Shuqi
Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of Civil Engineering, Southwest Jiaotong University, Chengdu, China School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, Singapore
Aziz, Naj
School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, Australia
Nemcik, Jan
School of Civil, Mining and Environmental Engineering, University of Wollongong, Australia
Mirzaghorbanali, Ali
School of Civil, Mining and Environmental Engineering, University of Wollongong, Australia
Pages: 12
Price: $25.00
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Details
Stock #: GTJ20160239
ISSN: 0149-6115
DOI: 10.1520/GTJ20160239