Stress Distribution on Blasting Gallery Barrier Pillar due to Goaf Formation During Extraction

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dc.contributor.authorKumar Reddy, S.
dc.contributor.authorSastry, V.R.
dc.date.accessioned2026-02-05T09:32:58Z
dc.date.issued2016
dc.description.abstractSemi-mechanised blasting gallery mining is a sustainable option to achieve higher production and productivity from underground thick coal seams. Judicious design of underground blasting gallery panel requires understanding of stress distribution on barrier pillars during different stages of extraction. This paper presents a study of stress distribution in and around barrier pillar for the different stages of extraction in the blasting gallery panel. Finite difference analysis taken up for final excavation (depillaring) in the panel with different stages of extraction. Analysis revealed that the stress transferred on barrier pillar increased as progress of excavation increased. Maximum stress was observed at a distance of 10 and 12 m from the pillar edge for virgin and goaved out panel sideby respectively, which gradually decreased towards centre of the pillar. © 2015, The Institution of Engineers (India).
dc.identifier.citationJournal of The Institution of Engineers (India): Series D, 2016, 97, 2, pp. 205-213
dc.identifier.issn22502122
dc.identifier.urihttps://doi.org/10.1007/s40033-015-0090-8
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/25899
dc.publisherSpringer India sanjiv.goswami@springer.co.in
dc.subjectBlasting
dc.subjectCoal deposits
dc.subjectExcavation
dc.subjectExtraction
dc.subjectFinite difference method
dc.subjectRoom and pillar mining
dc.subjectStress concentration
dc.subjectBarrier pillar
dc.subjectDifferent stages
dc.subjectFinite-difference analysis
dc.subjectGoaf
dc.subjectMaximum stress
dc.subjectThick coal seam
dc.subjectPillar extraction
dc.titleStress Distribution on Blasting Gallery Barrier Pillar due to Goaf Formation During Extraction

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