天山北坡洪水區(qū)域頻率分析與應(yīng)用

1、長沙理工大學碩士學位論文天山北坡洪水區(qū)域頻率分析與應(yīng)用姓名：徐磊申請學位級別：碩士專業(yè)：水文學及水資源指導教師：李誠20100401AbstractUptonow，thereisfewwidelyagreeableoracceptablemethodsforresolvinghydrologicalfrequencyanalysisforanungaugedsiteThedensityofhydrographicstationnetwo

2、rkisSOlittlethatthereisn’tenoughlongseriesdataevennohydrographicstationsonsomestreamsWiththedevelopmentofsociety，weneedtoconstructlotsofsmallandmediumhydraulicengineering，highwayandbridgeculvertprojectsspreadoveraconside

3、rableextentHowever，enoughhydrologicaldataareusuallyinshortevenhardlyanyrainstorminformationTherefortesearchcalculationmethodsofdesignfloodisofgreatsignificanceInthispaper，floodfrequencyanalysisonTianshannorthslopeXinjian

4、gprovinceisdonewithregionfrequencyanalysiscombinedindexfloodmethodaimedatthefewinformationofthisareaandachievedgoodresultsBasedonpreviousstudies，firstattemptionismadeatfuzzyclusteringinthisareaindexedby3statisticalparame

5、terreflectedbasinhydrologicalcharacteristics(namelylineraverage，linerdispersioncoefficientandlinervariationtoefficient)ThisregioniSdividedintotwosubareaswherediscordancyandhomogeneitymeasurearemadeTodoregionalfloodanalys

6、isinthetwosubareaswhichhavepasseditsdiscordancyandhomogeneitytestTheanalysisestimateparameterofPearsontypeIIIfrequencydistributionwithL—momentmethod，gettingregionalgrowthcurveThencomparethetwodesignresultsgotbyrespective

7、lyobserveddataandregionalfloodfrequencyanalysis，TheresultsindicatesthatthereliabilityofregionalfloodfrequencyanalysisisgoodEvaluatingindexfloodsisneededfordesignsiteifyouapplyregionalfloodfrequencyanalysisatungaugedarea，

8、SOhowtocalculateindexfloodofdesignsiteatungaugedareaisdiscussedFirst，buildtheregressionequationoftotalregiontoestimatetheindexfloodbriefly，thencorrectthepreliminaryresultbydisplacingreferencesiteFinallycalculatethedesign

9、floodthroughregionalgrowthcurveandtheindexfloodTheresultsindicatesthatregionalfloodfrequencyanalysismethodbasedlinermomentisaneffectivewaytoevaluatedesignfloodforungaugedsite，whichiSworthofstudycarefullyandspreadingKeywo