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Rock Mechanics and Rock Engineering

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25-01-2020 | Technical Note

Numerical Modelling of Fully Grouted Rockbolts Subjected to Shear Load

Authors: Wen Nie, Wei Guo, Shuqi Ma, Zhiye Zhao

Published in: Rock Mechanics and Rock Engineering | Issue 5/2020

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Rockbolts are often installed into the rock masses as a reinforcement structure to restrain the rock deformation at the excavation surface in underground excavation projects. When the rock moves towards the excavation surface, the rockbolt elongates, resulting in tension in the rockbolt and compression in the surrounding rock mass (Bobet and Einstein 2011). The most commonly used rockbolt is the fully grouted rockbolt as it has a reliable anchoring system and high bearing capacity (Li and Stillborg 1999). The mortar and resin are often used as the grouting agent and filled in the annulus between the rockbolt and the borehole wall. The load transferring capacity of the fully grouted rockbolt is, therefore, heavily dependent on the bond strengths at the interfaces between the rockbolt and the grout and between the grout and the rock (Hyett et al. 1992; Ma et al. 2014; Nie et al. 2019). …

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Title: Numerical Modelling of Fully Grouted Rockbolts Subjected to Shear Load
Authors: Wen Nie
Wei Guo
Shuqi Ma
Zhiye Zhao
Publication date: 25-01-2020
Publisher: Springer Vienna
Published in: Rock Mechanics and Rock Engineering / Issue 5/2020
Print ISSN: 0723-2632
Electronic ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-020-02049-8

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