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from2001to2019,butgroundwaterlevelsinmostareasdecreased,andtheareaofdecreasedregionwas18,600km,
accountingfor83.97% ofthetotalstudyarea.Therapidexpansionofthepaddyfieldwasresponsiblefortheoverall
declineingroundwaterlevels.Thereisasignificantresonancerelationshipbetweengroundwaterlevelchangeand
precipitationintheannualcycleinthewaterlevelrisingarea ,thegroundwaterlevellagsabout11.52daysrelative
totheprecipitation ,andthePearsonCorrelationCoefficientbetweenthemis0.485;butthereisnostableperiodic
correlationbetweengroundwaterlevelandgroundwaterexploitationinthisarea,andthecorrelationispoor.There
isnostableperiodiccorrelationbetweengroundwaterlevelchangeandprecipitationinthecentralandeasternpartof
thestudyareawherethegroundwaterleveldropssignificantly,andthecorrelationispoor;butthereisasignificant
resonancerelationshipbetweengroundwaterlevelandgroundwaterexploitationintheannualcycleinthisarea ,the
variationingroundwaterlevellagsbehindthevariationingroundwaterexploitationbyabout10.8days,andthe
PearsonCorrelationCoefficientbetweenthem is- 0.409.Thegroundwaterlevelissignificantlymoreaffectedby
groundwaterexploitationthanbyprecipitationinthecentralpartofthestudyareawherethegroundwaterleveldrops
sharply.Thoughthewaterlevelintheirrigationareawherethegroundwaterleveldropsslightlyismoreaffectedby
groundwaterexploitation ,itisalsogreatlyaffectedbyprecipitation.Thisresearchisofgreatsignificanceforcon
ductingin - depthinvestigationsofregionalgroundwaterresourceschangesandguidingtherationaldevelopmentand
utilizationofgroundwaterresourcesinthisregion.
Keywords:SanjiangPlain;groundwaterflowfield;precipitation;groundwaterexploitation;CrossWaveletTrans
form
(责任编辑:李 娜)
(上接第 643页)
Developmentandapplicationofconcretevibratingrobotsystem forhigharchdam
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WANGXiaoling,WANGDong,RENBingyu,CHENWenfu ,TANYaosheng ,GUANTao
(1.StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,TianjinUniversity,Tianjin 300072,China;
2.ChinaThreeGorgesProjectsDevelopmentCo.,Ltd.,Chengdu 610041,China;
3.ChinaThreeGorgesGroupCorporation,Beijing 100038,China)
Abstract:Thetraditionalmanualvibrationisfacedwiththeshortcomingsofhighlaborintensityandstrongsub
jectivityduringnormalconcreteplacement ,andtheexistingvibrationmonitoringmethodsmainlyfocusonthevi
brationparameterssuchasvibrationpositionandvibrationtime.Thosemethodsmainlyrelyonmanualexperience
toevaluatewhetherthevibrationisconsolidated,whichisdifficulttorealizetheaccurateevaluationofconcrete
vibrationquality.Tosolvethoseproblems ,aconcretevibratingrobotsystemintegratingsurfaceimagerecognition
usingmachinevisionmethodisdeveloped ,whichincludesvibratingrobot,cloudmonitoringplatform andcom
municationsubsystem.Thevibratingrobotisdesignedtorealizetheunmannedvibrationofconcreteonthestore
housesurfaceofhigharchdam usingadvancedtechnologyincludingtheindustrialrobot ,automaticcontroland
machinevision.Meanwhile , theclassificationmodelofconcretesurfaceimagebasedonimprovedresidual
network(ResNet)isestablishedtorealizethescientificanalysisofvibrationquality.Moreover,thecloudmoni
toringplatformisdevelopedbasedontheB/Sarchitecture ,andtheinformationtransmissionandinteractionwith
thevibratingrobotarerealizedthroughthewirelesscommunicationsubsystem ,whichrealizesthevibrationinfor
mationvisualizationandremotecontrol.Thefieldtestshavebeenconductedtoverifythereliabilityandfeasibility
oftheproposedvibratingrobotsystem.Theresearchresultsprovideanewideaandtechnicalwayforrealizingun
mannedvibrationandrefinedqualitycontrolofconcreteplacementofhigharchdam andcouldbeusedforother
massconcreteconstruction ,whichhavesignificantapplicationandpopularizationvalue.
Keywords:higharchdam;concretevibration;vibratingrobotsystem;machinevision;improvedResNet;surface
imageclassification
(责任编辑:李福田)
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