灌區(qū)改造渠道設(shè)計(jì)水面線分析研究

1、河海大學(xué)碩士學(xué)位論文灌區(qū)改造渠道設(shè)計(jì)水面線分析研究姓名：張孟希申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水利工程指導(dǎo)教師：俞雙恩陳紹金20070501#口海大學(xué)T程碩一L學(xué)位論文AbstractOurcountrysdistrcthavemostlybeenbuiltinthe20century50mtlIestartof60thand70橢，sotheya∞veryoldandseriouslylackofreconditionthewaterusee

2、fficiencyofthesedistrictareverylowtheseconditionsseriouslyeffectthedistrictprojectbenefit，andareeagertobereconstmctlnviewofthedistrictpresentquestions，designachannelwatersurfacecurvewhichbethtobeabletosatisfythedistrictt

3、ransformationgoalandcausethedistricttotaltransformationworktobesmallestisthekeyoftheirrigationsubsequentconstructionWeshouldanalysiswatersurfacecurvefirstbeforethecomputationinordertoconfirmwhatkindofthewatersurfacecurve

4、itisTherearefivedifferentkindsofchannelbottomslopes，andthepositionofthecriticaldepthwaterline(KK)andthenormaldepthofwaterline(NN)arcdifferentsothechannelcanbedividedinto12flowingareas，amountsto12watersurfacecurvesneartic

5、lecomputethewatersnrfacecurvesectionbysectionthoughthepartitionsummationmethod，andmadetheprocedurefortheautomaticsolutionTaketheHuangShilldistrictasamodelcomplywimtheseprinciplessuchas：don’tchangethebuildingsasfaraspossi

6、ble，don’treducethechannellevelasfaraspossible。trytothemakethewaterlossofthenewbuildingstobeleast，trytomakethetotalprojecttobeleastandsoontocomputethechanneldesignedwatersurfacecurve，drafttheoptimizationplanofthechannelwa

7、tersurfacecurveandthetransformschemeofthechannelbuildingComputeitsectionbysectionfromthetailtotheheadonthebaseoftryingtomaintaintheoriginaldesignedwaterlevelandconsideringthewaterlossinadvancewhenthewateracrossthechannel

8、buildingobtainthewatersurfacecurveofthetotaltrunkchannel，thesouthminkchannelandthenorthtrunkchannelRechecktheexistchannelsandbuildingscallfindthatresulthasalreadygotthegoaltocauscthedistricttotaltransformationworktobesma