简介:Theconceptsof“confiningstructure”andstructurelightareilluminatedinthispaper.Alasertheodolitewiththreefreedomsofrotation,whichisaimedat“confiningstructure”,isdeveloped.Variousscanningmodesandtheirmathematicalmodelsbasedonlasertheodolitewiththreefreedomsofrotationarediscussed.Accordingtothefeaturesofahugeobject,,thestructurelightengineeringsurveyingbasedonlasertheodolitewiththreefreedomsofrotationisdeterminedasthemainmethodinanactualapplication.Theobservationoffoursoundconcretepostsandforcedcenteringplates.Subsequently,itistransformedintothehugeobjectcoordinatesystem.Thescanningmodewithplumbplaneisselectedasthemainmodeinthewholework.Andotherassistantmethods,suchascloserangephotogrammetryandthemethodofusingreflectionsheet,areappliedtotheworkof“scanningdeadangle”.Atlast,asurveyingaccuracyestimationofthismethodisdoneandasurveyingaccuracytestisfinished.Itcanbeconcludedthatthestructurelightengineeringsurveyingbasedonlasertheodolitewiththreefreedomsofrotationisconsideredtobeaneffectiveandappliedmethod,andhasmanysuperioritytosomeothersurveyingmethodsintheworkofsurveying“confiningstructure”.
简介:Jiaojia-patterngoldminescouldbesurveyedbyutilizinglarge-powerinducedpolarizationsounding.Firstly,amulti-layerednumericalmodelofapolarizationbodywasestablishedinsenseofphysicalandmathematicalderivation.Thepolarizationfieldgeneratedfromthemodelwasthestackofindividualfieldsgeneratedfrommulti-layeredpolarizationunits.Theequationforeliminatingstrongshallowpolarizationanomaliesfromthesoundingdatawasderivedbasedontheprincipleofmultiplyeliminatingthefieldsofindividualpolarizationunits.Asaresult,thedeeppolarizationanomalieswereprominent.Theprocessedsoundingdatawasusedtoquantitativelycalculatethedepthstothetopsofdeepalteredzonesofgoldenmineralization.
简介:Thefeasibilityofmoni-toringthechangeofcitysettlementusingGPSsurveyinginsteadoflevel-ingisstudied.AfiducialnetworkandamonitoringnetworkareestablishedinNingbocity.TwoperiodsofGPSobservationarecompleted.Somemeasuresaretakenduringtheobser-vationinordertoensuretoobtainthehigh-preciseheightcomponent.TheSaastamoinenmodelisadoptedinthedataprocessingofthedrycomponentpartofthetroposphericdelay.Thewetcomponentchangeofthetropo-sphericdelayisestimatedbystochasticprocessesmodel.WhenBernesesoft-wareisusedtoprocessthedata,themillimeterlevelprecisionofheightmeasuringisachieved.
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