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InfluenceAnalysisofUndergroundMiningontheStabilityofMainandAuxiliaryMineshaftinDashuigouSectionofYinminCopperMine

  

  1. (EngineeringDesignInstitute,KunmingEngineering&ResearchInstituteofNonferrousMetallurgyCo.,Ltd.Mine,Kunming650051,China)
  • Online:2020-04-03 Published:2020-04-03

Abstract: Toensurethesafetyofthemainandauxiliarymineshafts,thepaperanalyzedtheinfluenceofundergroundminingonthemainandauxiliarymineshaftthroughFLAC3Dsimulation.Subsidencedeformationofsurfaceandmineshaftinprocessofdepositbodyexploitationwerecalculated,andjudgementweremadeaccordingtothegradeevaluationcriteriaforstabilityofgoafsiteinChina.Simulationresultsshowthatstratamovementisadynamicprocessoftransferfrombottomtotop,andsubsidencedeformationofmainandauxiliarymineshaftisverysmall,andthecontrolstandardofsurfacesubsidenceislessthan10cm.Atthesametimethesurfaceandmineshaftdonotproducetheplasticdistrbedzone,whichillustratesthemineshaftisinastablestate.Theresearchresultsprovidetheguidingbasisforstopedesignandsafeoperationofmainandauxiliarymineshaft.

Key words: undergroundmining, mainandauxiliarymineshaft, stability, evaluationcriteriaofstabilityingoafsite, subsidencedeformation

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