Comparative Study on Fracture Behavior of the Reinforced Jointed Rock

Ming Tian Li; Shu Cai Li; Ning Zhang

doi:10.4028/www.scientific.net/AMR.250-253.2562

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Comparative Study on Fracture Behavior of the...

Comparative Study on Fracture Behavior of the Reinforced Jointed Rock

Abstract:

In order to understand the anchorage mechanisms the fracture behavior of jointed rock masses reinforced with rockbolts was compared with those of the jointed rock masses without rockbolts. Firstly the unaixal tensile tests were conducted on the specimens with inclined surface cracks, horizontal through cracks and horizontal a quarter through cracks to investigate the crack growth of the jointed rock masses without rockbolts. The experimental results show the fracture of the specimens without rockbolts belonged to tensile fracture in the catastrophic way under uniaxial tensile conditions. However the experimental results of the specimens reinforced with rockbolts show that rockolts can change the initiation of the pre-existing cracks, incur the secondary cracks and there existed stable crack propagation.

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Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

2562-2565

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.250-253.2562

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Online since:

May 2011

Authors:

Ming Tian Li, Shu Cai Li, Ning Zhang

Keywords:

Anchorage Mechanism, Fracture Behaviour, Jointed Rock, Rockbolt

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