黑龍江省北部引嫩工程渠道沖淤成因及綜合防治措施的研究

1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文黑龍江省北部引嫩工程渠道沖淤成因及綜合防治措施的研究姓名：劉彥君申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：農(nóng)業(yè)水土工程指導(dǎo)教師：劉慶華于佰芳2003.5.1。一。一。。翟鑒氅蘭堡璧鎏些簍鎏圣一。。。。，。。。。。一。。。。。AbstractTheNorthNenjiangConveyanceProjectofHeilon西iang(r州CP)islocatedinthecentralofSongNenplainofHeitongj

2、iangprovince，inthenorthlongi。tude126。128。andeastlatitude46。484Theprojectisaintegralla噶ewaterconveyanceprojectwhichmainlysupplieswatertoDaqingoilfield，chemistryindustries，drinkingwaterforpeopleliveneartheconveyancecanalan

3、dirrigatessomefarmlandsSince1976，theprojectwascompletedandputinoperating，ithasmadegreatsocial，economicalandbioecologicalbenefitIthastakenplayanimportantruleDuring20yearsoperating，NCPhasgreatchangebecameoftheerosionandsed

4、imentspeciallytheCROSSsectionenlarged，generallywidthenlarged5—6metersthannormalsectionThemaximalexceededmorethan20metersForamulti—purposeconveyanceprojeeltheconduitcapacityisamostimportantfactorAlthoughthecanalconduitcap

5、acitydoesnotchangeverymuchthandesigndischarge，thecanalerosionduetomanyyearsScouralreadydamagedthecanalstabilityTherefore，takingefficientmeasuresshouldprotectthecanal。Bymeansofprototypeobservation。analysisandnumericalmode

6、ltheauthoranalyzedthecanalScourandsedimentprocess，thedifferentSCOUrandsedimentaffectedonthedischargeandaffectedonmaterialsmovementindifirerentcrosssectionsof斑ecanal。Bymeansofprototypeobservation，analysiswithmaterialsandt

7、heories，andlaboratorytest，theauthordeeplyanalyzedthecausesandprocedureofcanalcrosssectionerosionandobtainedeightcauseswhichresultedthecanaldeformincludingflowseepagerune最collapseofbanlc’dryeffect，humanactivitywaveflush，f

8、rozen。andthenstressedtodiscussthefrozenprocess。Throughtheoreticallyanalysisandcomparing，thedissertationproposedtheintegralmeasurestenovateNCPanalyzedtheprincipleofthemeasuresmethodandprocedures，Allofmeasurfshavebeenteste

9、dintestsite，Thegeneralrenovationprincipleistakingvariousmeasuresaccordingtothelocalconditions，suchthat：1Forflowerosion，musttakemeasuretocontrolwaterflowandsoilmovingfollowingtheflowcourseInthecanalwithsandmovingbalancean

10、dstablebed，maykeepthecurrentstatus；Forthesedimentcanalwhichseriouslyreduceddischarge，mayproperlycleansediment；Fortheseriouslyscouredcanal，suchascurvedcanal，shouldliningthecanal2Forseepage，shouldtakedrainage3。Forflushingc

11、analbysloprunoffmustbuildthecutoffditch4Forcollapseerosion，shouldmakegradualsideslopandliningthebankofcanal5ForfrozenerosionthegoodmeasureistoCUtslopandliningwithCOarSegravel；meanwhile，adjustthecanaloperatingtOlessthefro