天山北坡洪水區(qū)域頻率分析與應(yīng)用

1、長(zhǎng)沙理工大學(xué)碩士學(xué)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(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水文學(xué)及水資源指導(dǎo)教師：李誠(chéng)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