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(DOC) Exploration

By Charles Ortiz,2014-07-22 02:58
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Exploration

    Exploration

Vo1.25(Supp1.)2006CHINESEJ0URNALGE0CHEMISTRY

    ;Keywordsenvironmentalgeologicalproblem;geologicaldisaster;environmentalpollution

    ;ExplorationandsafetyevaluationonPanzhihuaironbarrenrockwithphysicalgeographical

    ;methods

    ;XianguoTUO,WanLEI,ZhengqiXU,JinxiLI,KeliangMU

    ;CollegeolinformationEngineering,ChengduUniversityofTechnology,Chengdu610059,China

    ;.TheCollegeofAppliedNuclearTechnologyandAutomationEngineering,ChengduUniversityofTechnology,Chengdu610059,China

    ;37

    ;Barrenrockissomethingthatis1eftuselessintheprocessofmining.anditsstackmustbeconsideredforsafemining.Panzhihua

    ;ironorehasbeenminedfornearly40yearsandhasresultedina1argeamountofbarrenrock.OnlythebarrenrockintheZhujiabao

    ;mineweighsabout0.7billiontonandoccupiesanareaofover3km,andformsahugestackabout200metershigh.Toknowthe

    ;safetyofZhujiabaobarrenrock,physicalgeologicalexploringtechniques--s

hallowseismicreflectionandrefraction,highdensity

    ;electrica1me

    odandhighprecisionmagneticmethodwereemployedtoexploreandanalyz

    ethebarrenrock.Shallowseismic

    ;dadaprocessingsynthesizestheparametersoftimeprofileandspeedanalysisandusesCBWCMtoaccuratelycalculatethespeedof

    ;each1ayerandtheaveragespeed.andthendeterminesthevertica1and1atera1distributionandthecorrespondingdepthofvertica1

    ;waves.Highdensityelectrica1methodquicklYcollectsfielddatabyusingprogrammedmulti.circuitswitchertoselectdifferent

    ;electrodecombinationanddifierentelectrodespace.Thismethodanalyzesandcomparesallparameterprofilediagramsandcorrectly

    ;distinguishesthenorma1fieldfromtheabnorma1field.anddeterminestheroughdistributivecharacteristicsofabnorma1fields

    ;accordingtothedensityofchangefordataisolinegradient.Highprecisionmagneticmethodwasusedtoanalyzethecauseof

    ;abnorma1field.determinethemagneticdistributionofbarrenrockandevaluateitsilinerstructureaccordingtothemagnetic

    ;differencesofrocks.Highprecisionmagneticmeasuring1inenetworkissquareanditsdensityis10m×10m,i.e.,thespacebetween

    ;eitherspotsor1inesis10m.Abnorma1magneticprofilediagramandplaneisolinediagramwereobrainedaftercalibratingfielddata

    ;withnorma1field,dailygeomagneticchange,altitudecorrectionandzerodisplacement.Theexplorationmakescleartheformand

    ;placeoforiginalform1inesofbarrenrockthethickness,compactnessandburyingofbarrenrockstacks,andtheplaneofweakness

    ;anddevelopmentoffissuresinsidebarrenrocks.Safetvofthebarrenrockcanbeevaluatedbysyntheticanalysisandcomparisonof

    ;thedataacquiredwiththeabovethreephysicalgeographicmethodsandcarefu1analysisofabnorma1areas.

    ;Keywordsphysicalgeologicalexploringtechnique;shallowseismic;high

    densityelectricalmethod;highprecisionmagnetic

    ;method;safetyevaluation

    ;Applicationofremotesensinginmonitoringenvironmentalchangeinorearea--Take

    ;PanzhihuaV_Timagnetiteasanexample

    ;XianguoTUO,WunianYANG.,HuaiyongSHAO.,ZhengqiXU,KeliangMU

    ;TheCollegeofAppliedNuclearTechnologyandAutomationEngineering,ChengduUniversityofTechnology,Chengdu610059,China

    ;CollegeofinformationEngineering,ChengduUniversityofTechnology,Chengdu610059,China

    ;CoHegeofEarthSciences,ChengduUniversityofTechnology,Chengdu61005~China

    ;Remotesensingisaneffectivemethodtomonitorenvironmenta1change.Tostudytheinfluenceofminingandminedumponthe

    ;environmentofmine.remotesensingisusedtomonitorthechangeof1anduseandvegetationintheorearea.andtoforecastthe

    ;ecologicalenvironmentbyconsideringtheminingspeed.Remotesensingimagesatdifferentperiodswerecollectedinthestudy,

    ;whichincludeMSSimagesin1975,TMimagesin1990,1995,2000and2005,andSP0T-5imagesin2002.Atthesametime,relief

    ;mapandgeologicalmapoftheoreareawerealsocollectedasassistantdataforremotesensinginterpretation.Aftercolorsynthesis,

    ;enhancingtreatmentandgeometricaIrevision.theinteroreteddynamicinfclrmationonremotesensingimageswaseditedwith

    ;ARC/INFOsoftware.tobuildadynamicmonitoringdatabasefor1anduseintheoreareafrom1975to2005andadatabasefor1and

    ;usein1975,1990,1995,2000,2002and2005.oughinterpretation,itisfoundthat,after30yearsofminingactivities,the

    ;vegetationareainthePanzhihuaminingareawasreducedfrom9352.6hain1975to8195.6hain2005.anditsgrasslandareafrom

    ;1053hain1975to795.5hain2002.Afterthat.thegrasslandareaincreasedto869.1hain2005becauseofre.cultivationofsome

    ;minedumps.lereas.theareafor1oadingandunloadingoforeincreasedfrom220hain1975to844hain2005,inwhichthestope

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