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

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

Research output: Contribution to journalArticle

48 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
DOIs
Publication statusPublished - Oct 2014
Externally publishedYes

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