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SlopeStabilityAnalysisof25Milliont/aOpenpitMiningProjectinJinningPhosphateMine

  

  1. (EngineeringTechnologyDepartment,YunnanPhosphateChemicalGroupCo.,Ltd.,Kunming650600,China)
  • Online:2020-04-03 Published:2020-04-03

Abstract: TheminingdepthofJinningopenpitphosphatemineisdeepeningdaybyday.Thestabilityoftheupperslopeofthestopeisdirectlyrelatedtothenormaloperationofthemine,whichalsoaffectstherationalityofitsdeepextensionminingdesign.Itiscriticallyimportanttoevaluatethestabilityoftherockyslope.LimitequilibriummethodGeoslopewasusedtosimulatethestabilityofthestopeslopeaccordingtotheengineeringgeologicalconditions.Theslopesafetyfactorsarecalculatedundernaturalcondition,earthquakeconditionandrainfallconditionrespectively.Theresultsshowthatthestopeslopeisstablewithsomesecurityreserve,andslopestabilityachievesthesafetygradeandmeetsrequirementsofcodesconcernedinallworkingconditions,whichillustratesthatthedesignofstopeslopeisfeasibleandrationaltocertaindegree.Atthesametime,therelevantmeasuresareputforwardtoimprovethestabilityofslopeandaddressthedeformationmonitoringofslope.

Key words: stopeslope, openpit, stability, safetyfactors

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