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1、附录1AnewmethodforminingdeformationmonitoringwithGPS一RTKGAOJing-xiang,LIUChao,WANGJian,LIZeng-ke,MENGXiang-chao1.KeyLaboratoryforLandEnvironmentandDisasterMonitoringofStateBureauofSurveyingandMapping,ChinaUniversityofMiningandTechnology,Xuzhou221116,China;2.SchoolofEnvironmentandSpatialInform
2、atics,ChinaUniversityofMiningandTechnology,Xuzhou221116,ChinaReceived19June2011;accepted10November2011Abstract:Basedonrangingintersectiontheory,anewmethodwhichissimpleandeasytooperatewasproposedfordatacollectionintheminesurfacedeformationmonitoringwithGPS-RTKcenteringrodmeasurements.Itcanfu
3、llyeliminatetheinevitableshakingerrorandtheverticaldeflection,andtosomeextentweakenthemultipatheffectontheestimatesofcoordinatesinarelativelyshortperiodoftime,usinghigh-frequencyobservations.Theresultsshowthatthree-dimensionalcoordinateswithaheightaccuracybetterthan1cm,horizontalaccuracybet
4、terthan2−4cmcanbeachievedthroughonly15−30scontinuousobservationby20Hzhigh-frequencyandeffectivelyimprovethemeasurementaccuracyandefficiencyofRTK,fullysatisfyingthehigh-speedandhigh-precisiondataacquisitioninminesurfacesubsidencedeformationmonitoring.Keywords:GPS;roverpole;multipathdelay;def
5、ormationmonitoring1IntroductionInordertodevelop,utilizeandprotectthecoalresourcesrationally,andpromoteandensurethedevelopmentofthecoalindustry,theChinesegovernmenthasenactedandimprovedsomerulesandregulations.Akeyproblemoftherulesisthathowtoconfirmtherangeofprotectingcoalcolumnbydifferentcoa
6、lminingmethods,burialdepth,seamthickness,roofandfloorlithologiccharacters,geologicstructure.Typically,aseriesofobservationstationsarrangedatregularintervals(15-25m),measuringrelativedisplacementsofthestationsbythetraditionaltechniques(leveling,totalstation,etc),wereestablishedtosummarizethe
7、changelawofparametersofsurfacemovementforproductionandconstructionofmine.However,thesurfacedeformationisexpensivetocarryoutorcannotbemeasuredbytraditionaltechniquesinsomecoalmineareas,especiallyinthemountain.Hence,itisnecessarytoemployeffectivetechniques
