河道節(jié)點(diǎn)對(duì)河床變形的影響研究.pdf

1、河北工程大學(xué)碩士學(xué)位論文河道節(jié)點(diǎn)對(duì)河床變形的影響研究姓名：張鴻清申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水力學(xué)及河流動(dòng)力學(xué)指導(dǎo)教師：楊紀(jì)偉201104AbstractIIAbstractRivernodeincludingtwokinds:naturalnodeartificialnode.Inpracticalprojectstosatisfytheneedsofproductionlifeofhumanalotofartificialnodeeng

2、ineeringswerebuilt.Theexistenceofnodeprojectswilldirectlyinfluenceitssurroundinglocalnearbythewatersedimentacteristicsofriverbederosiondepositionthusaffectingtheriversecologyperatestraitsecurityfloodcontrolembankment.The

3、refetheresearchontheartificialnodeonriverbeddefmationaffectedhastheimptantpracticalsignificance.Accdingtothedifferentlocationsofmanmadenodesinthewaterwaygenerallytheyaredividedintothreetypes:shebasednodesintermittentrive

4、rnodescontinuousrivernodes.Inadditionbasedonthedataupdatingsomemesummarizationonthedetailedeffectsofnaturalnodesmanmadenodes(inthefirstsecondpartlythird)ontheriverbedshavebeenconcluded.Howeverinperateriverculvertthethird

5、typeischoseninthewaterdiversionprojectfrequently.OnonehCulvertscandiversewaterasaperateriverstructures.Ontheotherhculvertscanwkasnodestochangetheupstreamwaterflowlinessedimenttransptingthenaffecttheriverbedsituation.Ther

6、efethistextmainlyresearchanalysisontheculvertcrossingrive.ThisarticleBasedonthephysicalmodelmethodhavingZhangHeperateriverculvertsasabackgroundInfbiddenbroadeningchannelswhichwithtwodifferentkindsofholecrestelevationcond

7、uctaculverttestwithRoundtrapezoidboxtypethreesection.Thetestitemsinclude:aimedatgettingthechangedruleofperateriverculvertsrivewithoutnodeswhichUpstreamdownstreamwaterVarioussectionstransversevelocityofupstreamdownstreamc

8、ulvertslocalofculvertsalengthofriverbedscouringsedimentationneartheupstream。Theconclusioncanprovidecertainreferenceftheperateriverculvertssectionchoicethedesignofculvertroof.Keywds:rivernode；culvertcrossingrive；sectionsh