Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load

Jan Nemcik, Shuqi Ma*, Naj Aziz, Ting Ren, Xueyu Geng

*Corresponding author for this work

    Research output: Contribution to journalArticle

    51 Citations (Scopus)

    Abstract

    Numerical modelling of fully grouted rock bolts loaded in tension is presented by implementing a non-linear bond–slip relationship of bolt–grout interface into a commercial finite difference rock mechanics code. The proposed model shows a close match with the experimental results and analytical predictions in terms of load–displacement relationship, rock bolt axial force distribution and interfacial shear stress distribution. A detailed debonding failure process is also presented, which includes five successive states: elastic state, elastic-softening state, elastic-softening-debonding state, softening-debonding state and debonding state.
    Original languageEnglish
    Pages (from-to)293-300
    Number of pages8
    JournalInternational Journal of Rock Mechanics and Mining Sciences
    Volume71
    Early online date28 Aug 2014
    DOIs
    Publication statusPublished - 1 Oct 2014

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