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ID:39402427
大小:503.50 KB
页数:94页
时间:2019-07-02
《基于有限元法的复杂三维渗流场渗流量计算方法研究》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、河海大学硕士学位论文基于有限元法的复杂三维渗流场渗流量计算方法研究姓名:祁书文申请学位级别:硕士专业:水工结构工程指导教师:沈振中20070520Seepagedischargeisanimportantguidepostinseepagecalculationandoneoftheproblemsinseepagecalculationandanalysisistoforecastseepagedischargeaccurately,Accordingtotherequestofprojectthecalculationmethodofseepagedischarge
2、forcomplicated3-DseepagefieldbasedonFEMarestudiedinthisdissertationThevalidityandtheveracityofthisnewcalculationmethodwillbeprovedbycomparison.Thepaperincludesthefollowingcontents:1.Onthebaseofbasicseepagetheory,thedeductionofDarcy’lawandthebasicequationsonseepageproblemarededucedindetai
3、l.Thebasicconceptsrelatedtotheseepageproblemsuchasparameter,conditionoffinitesolutionandmathematicmodelareallexplainted.2.Thesolutionswhich缸eusedtosolvetheseepagecalculationoffiniteelementwithfzeesurfaceareintroduced.Thetwocalculationmethodsofseepagedischarge,namelymid‘sectionmethodandno
4、dalequivalentmethodarestressexplained.Thebasictheoryanddeductionofabovetwomethodareintroduced:3.Fromdefiniensofseepagedischargebyusingbasictheoryoffiniteelementmethodandtransformofisoparameterelement,thecalculationmethodofseepagedischargebetweentworandomplanesisintroducedandtheiterationf
5、ormulawhichusedtocalculatetheseepagedischargeofrandompointisdeduced.Theiterationformulathenisusedtodevelopprogramforcalculationofseepagedischarge.4.Thrcecalculationmodels,homogeneousrectangledam,sandlaunder,anddykearcusedtoprovetherationalityofII@W"calculationmethodintroducedinthispapera
6、ndthevalidityofrelafivecalculationprogram.Bycomparison,itisshownthatthecalculationresultofseepagedischargeobtainedbyusingthemethodintroducedinthispaperismoreprecise.5.CalculationforcontrollingseepagedischargeinthedamsiteofBakunHydropowerP删cctinMalaysiaandcalculationonseepagedischargeofdr
7、ainagewellsinthefoundationpitofJinnahHydropowerProjectinPakistanaretakenasexamplestoprovetheadvantageandpracticabilityofthecalculationmethodforseepagedischargeintroducedinthepaper.Keywords:seepagefield,seepagedischarge,finiteelementmethod,OR-offnegativepressuremethod,is)p
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