近距离煤层外错式巷道支护优化研究

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中图分类号：TD822.3 文献标志码：A 文章编号:2095-2945(2026)08-0173-04

Abstract:Inordertosolvetheproblemofroadwaymaintenancewithstaggeredlayoutunderthegeologicalconditionsof close-distancecoalseam，takingtheauxiliaryhaulagegatewayof3S2O3workingfaceastheengineringbackground，onite investigationandtheoreticalanalysismethodswereusedtoanalyzethetunneldeformationmechanismofthe3S2O3auiliay transportationroadduringmining:theintervalbetweenlayersistosmallandthereisnokeylayer;teofsetdistanceofthe 3S203auxiliarytransportationroadarangementisunreasonable.Anoptimizedjointsupportplanofhollowgroutinganchorable + onebeamandthreepilarsisproposed.Afterfieldaplicationandmonitoring，thisjointsupportplancontrolsthemaximum roof displacement within 200mm ， and the maximum pressure of roof anchors and cables with in 110kN . The joint support design well controls the deformation of the roadway.

Keywords:close-distancecoal seam;externalofset type;supportoptimization；roadwaymaintenance;roadwaydeformation

近距离煤层是指相邻间距较近，开采时相互影响作用明显的煤层[1-2]。（剩余6235字）