Laboratory measurement of time-dependent deformation properties of muddy siltstone.

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Hamza, Omar and Stace, Rod 2017. Laboratory measurement of time-dependent deformation properties of muddy siltstone. Chamber of Mining Engineers of Turkey.
AuthorsHamza, Omar and Stace, Rod
Abstract

This paper investigates the time-dependent deformation of argillaceous rocks, drawing principally on laboratory experiments carried out on muddy siltstone recovered from an open pit mine located in the midlands, UK. A series of creep tests were conducted on both intact and fractured rock samples to cover the two ultimate structural conditions of rock mass. Based on the creep test results, the relationship between axial strain and time under different axial and deviatoric stresses was investigated. The creep data of both intact and fractured rock samples was successfully fitted to Burgers model to represent creep behaviours of pre and post failure. The study provides improved representation of the time-dependent deformation properties of rock mass, which is essential to enhance geomechanical modelling of long-term stability of abandoned mines and for the application of underground disposal of radioactive waste.

KeywordsMining; Fractured rock; Argillaceous rocks; Burgers model
Year2017
JournalProceedings of the 25th International Mining Congress and Exhibition of Turkey
PublisherChamber of Mining Engineers of Turkey
Web address (URL)http://hdl.handle.net/10545/622372
http://creativecommons.org/licenses/by-sa/4.0/
hdl:10545/622372
ISBN9781510839748
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Publication dates14 Apr 2017
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Deposited19 Mar 2018, 10:38
ContributorsUniversity of Derby and University of Nottingham
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