基于统计粒子模型开展渗透变形相似律及管涌细观机理研究

《基于统计粒子模型开展渗透变形相似律及管涌细观机理研究》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、ResearchofsimilaritylawofseepagedeformationandMicroscopicmechanismofpipingbasedonthestatisticalparticlemodelXiaodongNiTunnelandurbanrailtransitreaearchInstitute,HohaiUniversityAbstract:Seepagefailureisacomplicatedfluid-solidcouplingprocess,Involvinglargedeformationandtheflowtheoryofgran

2、ularmedia.Theprocessofparticlemigrationiscloselyrelatedwithtime.Atpresent,thecontinuousmediummethodfromtheMacroscopiclevelisusedinmostcasetosolvethisquestion.Itisobviouslythatthecontinuousmediummethodishelplesstodescribethephysicalprocessofseepagedeformationdynamically.Statisticsparticl

3、eflowmethodhasthediscretetraitswhichcanbeusedtosimulatethephysicalprocessesmoreconvenient.Seepagedeformationisadynamicprocessofinteractionbetweensoilandwater.Whencarryoutrelevantexperiment,itisnecessarytomakesurethatthetimebetweentheanalysismodelandresearchobjectsiscoordinated.Inotherwo

4、rds,itmustobeytimesimilaritycriterion.TheongoingindoormodeltestorcentrifugemodeltestarebasedontheassumptionofDarcy'slaw.Undertheassumption,ithasbeenconfirmedbyteststhatthetimesimilaritycriteriondoesnotsatisfyagain.Inthiscase,itisimpossibletoachievesimilarbetweenporototypeandmodelintheco

5、rrespondingperiod.Sotherewillbeacertaindeviationbetweenporototypeandmodel.Basedonthebasicequationsoffluiddynamicsinporousmedia,thesimilaritycriterionaboutseepagedeformationisdeduced.Statisticalparticlemodelcanmeetthetheconditionsinthesimilaritycriterion.Therefore,themodelisusedtoverifyt

6、hecorrectnessofthesimilaritycriterion.Basedontheaboveresults,seepagedeformationmodeltestisconduct,thentakenitastheprototype.CorrespondingstatisticalparticlemodelisestablishedaccordingtothesimilaritylawTheresultshowsthatthismethodisapplicabletoresearchthephenomenonofpiping.Final,thismeth

7、odisusedtoexplorethemicroscopicmechanismofPiping.1.PrefaceDescribestherelevantnumericalmethodsofseepagedeformayion,highlightedtheproblemsexistinginthecurrentmethod.Describetheadvantageofstatisticsparticlemodelincarryoutseepagedeformation.2.SeepagedeformationcharacteristicsFlow: