【精品】水利水电专业外文翻译

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1、HydromechanicalanalysisofPlacingandprotectingfillflowbehaviorindamFristPlacingandprotectingfillFillshallbeplacedsothatmopartofthefinalfoundationsurfaceremainsexposedformorethan72hours.Fillshallbeplacedinsuchmethodsaswillpreventsegregationofthematerial.WheretheContractrequirestheplac

2、ingofdifferenttypesoffillinseparatezones,theContractorshallcarryouttheworksoastoprebentmixingofdifferenttypesoffill.Shoudtherebe,intheopinionoftheEngineer,anyexcessivemixingofdifferenttypesoffill,suchmixedmaterialsshallberemovedtoaspoiltipandreplacedwithfreshfill.Anyundesirablemater

3、ialaccumulatedonthefillsurfaceshallberemovedbeforeplaceingthenextlayeroffill.Nofillmaterialshallbeplacedonapreviouslayerofthathasdriedout,becomesaturatedorinanywaydeterioratedbyexposureorbyspillingofothermaterialordisterbancebymechanicaltransportorbydepositionofwindblownparticlesorb

4、yanyothermeans.Beforefreshfillmaterialisplacedaoosuchdeterioratedfillorforeignmaterialshallberemovedtoadepthatwhichmaterialofanacceptablestandardisexposed.ThesurfaceofeachlayeristobeapprovedbytheEngineerbeforethenextlayerisplaced.Anyfillshallbeplacedinuniformlayersnotgreaterthanthea

5、pprovedthicknessasspecifiedhereafterandinanorderlysequenceapproximatelyhorizontalalongthecentrelineoftheembankments.Exceptwherespecifiedofdirectedotherwise,noportionofanyembankmentshallbesteppedmorethan3feethigherthananyimmediatelyadjacentportionexceptwherepermittedbytheEngineerandt

6、heslopeformedbysuchstepsshallnotexceed1V:3Handnotlessthan1V:4Hfromoneleveltoanother.ExceptasshownontheDrawingsorasotherwisedirected,allfillplacementsurfacesshallbeslopedatrightanglestothecenterlineoftheembankmentinboththeupstreamanddownstreamdirectionfromthedownstreamedgeofthecoreso

7、astoallowrun-offandpreventtheaccumulationofwater.Thedrainageslopeonthetemporarysurfaceofannyzoneshallnotexceed1on30andthehighestpointshallbededownstreamedgeofthecore.Where,duetothespecifiedgeometryoftheexcavationintothetopoftheexistingembankments,thesurfaceslopeistowardsthedownstrea

8、medgeofthecore,theC