Numerical study of stability and connectivity of vertical goaf drainage holes

dc.contributor.authorKhanal, Manoj
dc.contributor.authorPoulsen, Brett
dc.contributor.authorAdhikary, Deepak
dc.contributor.authorBalusu, Rao
dc.contributor.authorWilkins, Andy
dc.contributor.authorBelle, Bharath K.
dc.date.accessioned2021-06-08T08:05:37Z
dc.date.issued2021-03
dc.description.abstractDuring underground longwall coal extraction, overburden strata deformation may result in vertical goaf drainage holes, which are drilled in advance of mining for tail gate gas management, to fail. The performance of these vertical goaf drainage holes is controlled by mine design parameters and local geomechanical properties. This paper investigates the use of advanced 3D finite element modelling and 2D discrete element modelling simulation techniques to understand the fundamentals of vertical goaf drainage hole failure mechanism due to strata shear at a currently operating gassy Australian mine site. Finite element modelling is used to investigate the location of high shear in the overburden strata at the vertical goaf gas drainage hole region during longwall mining and the discrete element modelling is used to examine connectivity from the goaf region to the goaf-gas drainage system.en_ZA
dc.description.departmentMining Engineeringen_ZA
dc.description.embargo2022-01-02
dc.description.librarianhj2021en_ZA
dc.description.sponsorshipThe Anglo-American Metallurgical Coal, Australiaen_ZA
dc.description.urihttp://link.springer.com/journal/10706en_ZA
dc.identifier.citationKhanal, M., Poulsen, B., Adhikary, D. et al. Numerical Study of Stability and Connectivity of Vertical Goaf Drainage Holes. Geotechnical and Geological Engineering 39, 2669–2679 (2021). https://doi.org/10.1007/s10706-020-01650-6.en_ZA
dc.identifier.issn0960-3182 (print)
dc.identifier.issn1573-1529 (online)
dc.identifier.other10.1007/s10706-020-01650-6
dc.identifier.urihttp://hdl.handle.net/2263/80245
dc.language.isoenen_ZA
dc.publisherSpringeren_ZA
dc.rights© 2021, Springer Nature Switzerland AG. The original publication is available at : http://link.springer.comjournal/10706.en_ZA
dc.subjectGoaf drainageen_ZA
dc.subjectGoaf hole shearingen_ZA
dc.subjectLongwall miningen_ZA
dc.subjectVertical holesen_ZA
dc.subject.otherEngineering, built environment and information technology articles SDG-04
dc.subject.otherSDG-04: Quality education
dc.subject.otherEngineering, built environment and information technology articles SDG-09
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherEngineering, built environment and information technology articles SDG-15
dc.subject.otherSDG-15: Life on land
dc.titleNumerical study of stability and connectivity of vertical goaf drainage holesen_ZA
dc.typePostprint Articleen_ZA

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