Page 185 - 《水资源与水工程学报》2023年第1期
P. 185

!34 " ! 1 #                       & ' ( ) & * + , -                               Vol.34No.1
               2023 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2023

            DOI:10.11705/j.issn.1672-643X.2023.01.22


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                 FGHIJ:TV41   KLMNO:A    KPQJ:1672643X(2023)01018109

                  Washoutresistanceanalysisofsolidifiedsiltinunderwaterapplications

                                                                            1,2
                                                                                         1
                                                  1,3
                                                               1
                                SHENGChuanming ,MAChao,LIANJijian ,LIUFang
            (1.StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,Tianjin300072,China;2.TianjinUniversityofTechnology,
                     Tianjin300384,China;3.TianjinUniversityFrontierTechnologyResearchInstitute,Tianjin301700,China)
                 Abstract:Toavoidthewashoutlossofsolidifiedsiltinunderwaterapplications,themainfactorsthataf
                 fectthewashoutresistanceofsolidifiedsiltareanalyzedandthegroutviscosityisadoptedtoquantifythe
                 washoutresistancebasedonunderwatertests.Testresultsindicatethattheviscosityistheintrinsicfactor
                 andthegroutingheightistheextrinsicfactorthataffectthewashoutresistanceofsolidifiedsilt.Thegrea
                 tertheviscosityandthesmallerthegroutingheight ,thegreaterthewashoutresistanceofthesolidified
                 silt.HPMCismoresuitableforunderwatersolidifiedsiltthanGGandPAMduetoitshighthickeningef
                 fectiveness ,andthepHandtransmissivitymethodscanbeusedtocharacterizeitsperformanceonwash
                 outresistance.Bothfallingandcollisionaldiffusionswilloccurwhentheviscosityissmallerthan3.7
                 Pa ·s,onlycollisionaldiffusionwillhappenwhentheviscosityisvaryingfrom3.7to22.0Pa·s,but
                 nodiffusionisspottedwhentheviscosityisgreaterthan22.0Pa ·s.Solidifiedsiltwithviscosityvarying
                 from3.7to22Pa·sandgroutingheightsmallerthan30cm isrecommendedforunderwaterapplica
                 tions.
                 Keywords:solidifiedsilt;underwaterapplication;washoutresistance;viscosity;transmissivity
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