資源描述：
《壓縮河道的沖刷計(jì)算》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、北京交通大學(xué)碩士學(xué)位論文壓縮河道的沖刷計(jì)算姓名：高玉榮申請學(xué)位級別：碩士專業(yè)：防災(zāi)減災(zāi)及防護(hù)工程指導(dǎo)教師：齊梅蘭20061201ABSTRACTABSTRACT：Firstly,thepresentpaperhasestablishedone-dimensionalsteadilysaturatedflow-sedimentnumericalmodelforcontractedchannel．Secondly,thediscretedifferentialequationshavebeenderived
2、byafinite-differencemethod．Thirdly,thepaperhasappliedWSPROsoftwareandtheformulas64-1and64-2ofgeneralscourofchinatocalculatethegeneralScolffofcontractedchannel．Accordingtotheseresults，thepaperhasanalyzedthereasonofproducingthedifferenceamongthem．n圮reasoni
3、sthatfirstly,inthegradeofthedifferentfluxtheresultthatcalculatedbyone—dimensionalsteadilysaturatedflow·sedimentnumericalmodelisrelevanttothehistoryandtimeofscour．Inthecontrary,thesoftwareandtheformulashavenorelationshipwitllthetimeandthehistory．Secondly,
4、inthefacetofselectingthemodel．theformula64-2hasthedifferencewitllone—dimensionalsteadilysaturatedflow-sedimentnumericalmodel．One·dimensionalsteadilysaturatedflow-sedimentnumericalmodelhastheprogresschangedgraduallyduringchannelgeRingtoshrinkwhichamplifie
5、sthelengthofthechangingdistrictintheriver．Buttheshrinkofchannelisasuddenprogressinthemodelofformula64—2andthepartofsectioncontractedisrathershoa．Sotheapplicationofone—dimensionalsteadilysaturatedflow-sedimentnumericalmodelmakestherateofvelocityless，andth
6、enthevalueofSCOurbecomesless．Moreover,one-dimensionalsteadilysaturatedflow-sedimentnumericalmodelinvolveseffectsofsedimentationvelocityandgranulediameterofsediment．WSPROsoftwareonlyadoptsthemediumparticlesizeofthegradeofsediment．111eformula64·2considerst
7、hesedimenteffectbyarelativemotionparameterofflowandsediment．Theformula64·lrelatestOtheaverageparticleofsedimentandtheformulaisnotharmonious．Sowhentheparticleofsedimentismuchlarger，theformulaCallmaketheresultless．KEYWORDS：one-dimensionalsteadilysaturatedf
8、low-sedimentmathematicmodel；contractedchannel；generalscour；WSPROsoftware．CLASSNo：TVl4致謝本論文的工作是在我的導(dǎo)師齊梅蘭教授的悉心指導(dǎo)下完成的，齊梅蘭教授嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度和科學(xué)的工作方法給了我極大的幫助和影響。在此衷心感謝三年來齊梅蘭老師對我的關(guān)心和指導(dǎo)。齊梅蘭教授悉心指導(dǎo)我們完成了實(shí)驗(yàn)室的科研工作，在學(xué)習(xí)上和生活上都給予了我很大的關(guān)心和幫助，在此向齊梅蘭老師
