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1、AdvancesinGeosciences地球科学前沿,2017,7(2),224-231PublishedOnlineApril2017inHans.http://www.hanspub.org/journal/aghttps://doi.org/10.12677/ag.2017.72024NondestructiveDetectionforExplainingLeaningofManghongOctagonalTowerBaseonRaylieghWaveTechniqueYaqiongLiu,RongyiQian*,XinglinL
2、u,LichaoLiu,ZhouwenHuChinaUniversityofGeosciences(Beijing),BeijingthththReceived:Apr.5,2017;accepted:Apr.26,2017;published:Apr.30,2017AbstractRayleighwavedetectiontechniquehasbeenusedwidelytodetectthestructuralinformationoftowerfoundationforengineeringconstructions.Therea
3、remanyadvantages,includingnonde-structive,nearsurfacehighresolution,cheapnessandquickness,etc.TheManghongOctagonaltowerwasbuiltinKangxiperiodofQingdynasty,locatedinLancangcounty,YunnanprovinceandbecameoneofthemostimportanthistoricalsitesinChina.Atpresent,ManghongOctagonal
4、Towerisincliningtonorthandthetowerappearssomecracksatthebricksontowerbody.Inordertoprotectculturalrelics,nondestructivedetectionmethodhastobeutilizedtoascertainthestruc-turalinformationoftowerfoundation,andanalyzethereasonwhythetowerwasinclined.Inthispaper,weusedRayleighw
5、aveexplorationtechniquewithhighresolutiontoobtainshearwavevelocitystructureoftowerfoundation.Combiningwiththeengineeringgeologicalinformation,wecandeducethereasonwhythetowerwasinclined,andprovidesomebasicadvicesfortheprotec-tionofculturalrelics.WeprocessedtheRayleighwaved
6、atafromthetwosurveylinesatthetowerfoundation,andobtainedtheinformationoftheshearwavevelocitystructure.Fromthere,wecandeducethebackfillsoilthicknessisabout1mnearsurfaceoftowerfoundationandthebedrockissandyconglomerate.Thetowerfoundationislocatedontherelativeprominentbedroc
7、ksurface,andashearwavelow-velocityareacanbefoundonthenorthoffoundationwithweakerbearingstratum.Wecanconcludefromtheresultofdetectionasfollow:1)thelocalfracturezoneexistonthenorthofthetower;2)theunevensupportedpowerbetweenthebearingstratumandtowerfoundationwouldleadthetowe
8、rtoinlinenorth.KeywordsManghongOctagonalTower,RayleighWave,NondestructivelyDetection,TheReasonof
