数字化矿山技术.pptx

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1、MineralResourceStatementforaTaconiteIronDepositConsideringDynamicAnisotropyFilipeS.Beretta,MiningEngineerMSc.MarkCampodonic,Jean-FrançoisCouture,DominicChartierIntroductionIntroductionIntroductionTwooptions:unfoldingordynamicanisotropyDynamicAnisotropyThewirefram

2、esanglesareinterpolated;Assignedasanewvariabletoeachblock;Usedastheorientationforthesearchellipsoid.DynamicAnisotropyCasestudyCenturyIronMinesCorporation(theClient):HayotLake(AttikamagenIronOreProperty)RainyLake(SunnyLakeIronOreProperty)JoyceLake(AttikamagenIronOr

3、eProperty)CasestudyResourcedatabaseRawstatisticsforFe,SiO2,Al2O3,P2O5,MnOandLOIsupportedtheselectionofthedomains.124boreholes-23000m;5,000samples;Roughly500x400mspacing;MethodologyDatabasevalidation;Geologicinterpretationandmodelling;Classicstatisticsandgeostatist

4、ics;Gradeestimationbyordinarykrigingwithdynamicanisotropy;Subsequentdatavalidation;andReportingaboveoptimisedpitshell.GeologicalinterpretationandmodellingGeologicalinterpretationandmodellingVariographyVariogramParametersSearchNeighbourhoodParametersdefinedthroughQ

5、KNASearchVolume1=FeVariographyRangesMinimumof6samples;Maximumof25samples;Maximumof4samplesperdrillhole;SearchVolume2=SV1Rangesx2Minimumof6samples;Maximumof25samples;Maximumof4samplesperdrillhole;SearchVolume3=SV1Rangesx100Minimumof1sample;Maximumof25samples;Maximu

6、mof4samplesperdrillhole;EstimationparametersDomainPercentageFilled(%)SVol1SVol2SVol3JUIF36.7229.6733.60URC20.0141.6038.38PGC25.6240.9333.45LRC20.7733.6145.62LRGC12.2334.4553.32TOTAL26.3334.3239.36SummaryofBlocksEstimatedDuringEachEstimationPassOrdinaryKriging;Dyna

7、micAnisotropytofitthevalueswiththegeologicalmodel;150°azimuthrotatedblockmodelin(100x100x10m);Hardboundariesbetweensub-domains;ValidationVisualcheck-GradeestimationandDynamicAnisotropyTechniqueValidationMeangradescomparisonbetweenblocksandsamplesGLOBALVALIDATIONVa

8、lidationFevalidationplotsMineralresourcesclassificationAppliedMeasuredMineralResource:Nonreported;IndicatedMineralResource:Drillholesspacingat400by500me