Page 47 - 水利学报2025年第56卷第4期
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thelong - termeffectsduringthegrowingstages.Theresultsillustratethatreducingthecontroldepthofdrainagede
                  creasesgroundwaterdepth,drainageamount,anddurationwhileincreasingsoilmoisturecontent.Themostsignif
                  icantvariationoccursafterwaterloggingandduringthebranchingstage.Afterwaterlogging ,theplantheight,leaf
                  areaindex(LAI),leafchlorophyllcontent(SPAD),netphotosyntheticrate(Pn),stomatalconductance(Gs)
                  andtranspirationratedecreasefirstandthengraduallyrecovercomparedwiththecontrol.Themaximum relative
                  valueofSPAD,PnandGsafterrecoveryandtheincrementofrecoveryperiodarethelargestatthecontrolled
                  depthof50cm,andtherecoverydurationofSPADistheshortest.Atflowering - poddingstage,thecompensation
                  ofplantheight,LAI,PnandGsarethelargest,andbothPnandGscompensationarethemostobviousatthe
                  controlleddepthof50cm.Theabove - grounddrymatteraccumulationisreducedbywaterlogging ,andthereduc
                  tionfollowtheorderofleaf<fruit<pod,andtheyieldreductionismainlyduetothedecreaseofpodnumberper
                  plant.Thereductionoftheabove - grounddrymatter ,yieldandyieldcompositionarethesmallestatthecontrolled
                  depthof50cm.Controlleddrainagedepthof50cm,willprovidesuitablesoilwaterenvironmentforsoybean
                  growthinthesandyloamareaofHuaibeiPlain.
                  Keywords:drainagecontrol;afterwaterlogging;soilmoisture;growthstage;yield


                                                                                    (责任编辑:王 婧)


              (上接第 454页)
                              Visualmonitoringmethodfortherollingandpavingstatusofthe
                                              rollercompactedconcretedam

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                    SONGBenyang,CUIBo,ZHANGTianwei,WUBinping,RENBingyu,TONGDawei
                 (1.StateKeyLaboratoryofHydraulicEngineeringIntelligentConstructionandOperation,TianjinUniversity,Tianjin 300072,China;
                                     2.HuanengLancangRiverHydropowerInc.,Kunming 650200,China)
                  Abstract:Thecontrolofconstructiontimeforrollercompactedconcrete(RCC)dam significantlyimpactsthe
                  qualityofpouring.However ,theenvironmentofRCCdamsiscomplex,andthetraditionalmethodofassigning
                  dedicatedpersonneltomanuallyrecordatfixedtimesandlocationsfaceschallengessuchashighpersonnelcosts ,
                  lowefficiency,anddifficultiesinsafetymanagement.Toaddresstheaboveissues,thisarticleproposesavisual -
                  basedintelligentmonitoringandanalysismethodfortherollingandpavingstatusofRCCdams.Usingavideosur
                  veillancesystemarrangedontheconstructionsitetoobtainimagedataofconstruction,theQueryInstdeeplearn
                  ingalgorithmautomaticallyidentifiestheconstructionstatusofvariousareasonthedamsurface.Consideringthe
                  relationshipoftheimagedata ,statisticalanalysisisconductedontheconstructionstageandconstructiontimeof
                  eachstageonsite.ThismethodhasbeenappliedtothemonitoringprocessoftheconstructionstatusofaRCCdam
                  inSouthwestChina.Theresultsshowthattheproposedmethodcanaccuratelyandeffectivelyidentifythecon
                  structionstatusofvariousareasonthewarehousesurfaceandcalculatethedurationofeachconstructionstage ,
                  providingrichdatasupportandreferencebasisforbettermanagementlevelatconstructionsites.
                  Keywords:rollercompactedconcretedams; constructionofhydraulicengineering; videomonitoring; deep
                  learning ;computervision;rollingconstruction


                                                                                    (责任编辑:韩 昆)
















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