Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61438
Title: Reinforcement of rock mass with cross-flaws using rock bolt
Authors: Zhang, B
Li, S
Xia, K
Yang, X
Zhang, D
Wang, S
Zhu, J 
Keywords: Cross-flaws
Reinforcement
Rock bolt
Rock mass
Issue Date: 2016
Publisher: Pergamon Press
Source: Tunnelling and underground space technology, 2016, v. 51, p. 346-353 How to cite?
Journal: Tunnelling and underground space technology 
Abstract: Rock bolting is one of the most effective and economical means of rock mass reinforcement. Existing studies of rock bolt reinforcement are mostly focused on rock masses without flaw, with a single flaw, or with parallel flaws. However in rock masses, cracks or flaws usually exist in the form of cross-flaws. In order to understand the impact of cross-flaws on rock bolt reinforcement and to further explore the differences of bolt reinforcement between rock mass with cross-flaws and rock mass with a single flaw, reinforced analog specimens with cross-flaws and with a single flaw were tested under uniaxial compressive condition. The experimental results show that the uniaxial compressive strength of the reinforced rock mass with cross-flaws in this research is higher than that of reinforced rock mass with a single flaw. This observation can be explained by the difference in the failure modes of reinforced specimens: the reinforced rock masses with a single flaw fail due to the formation of a shear crack while reinforced rock masses with cross-flaws fail as a result of a tensile fracture or interaction between tensile fracture and shear fracture.
URI: http://hdl.handle.net/10397/61438
ISSN: 0886-7798
DOI: 10.1016/j.tust.2015.10.007
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