河北工程大学水文水资源毕设(古台水库设计)

河北工程大学毕业设计I设计总说明古台水库位于涉县县城东南35km，流域面积100km2，控制流域为清漳河支流关防沟上游山区，为季节性河流。除汛期洪水径流较大外，其他月份径流较小。坝址位于太行山脉东麓。该库为典型河道型水库，两岸山坡陡峻。库区无明显台地，高度在百米以上，河道宽度一般在100—400米左右，除河道两侧外基岩裸露，植被很差。古台水库属北温带大陆性季风气候，冬季寒冷干燥，夏季炎热多雨，春秋风大沙多，多年平均气温12.5°C。本次设计是利用已有资料对古台水库的各项特征值重新设计，以求坝体安全，并在此基础上增大其兴利作用。本次设计大致分为以下几个部分：泥沙分析：建库后，坝前会有大量泥沙会淤积，从而减少库容量。一般而言，水库的运用年限是死库容淤满，因此对泥沙的分析可以用于确定死库容，从而确定死水位。本次设计以淤沙库容作为死库容。年径流分析:年径流分析用于分析水库的兴利库容，从而确定正常蓄水位。古台水库坝址附近无水文气象观测（台）站。水库1970年建成蓄水以来，一直未对本区域的入库流量、下泄量及水库的蓄水水位等水文资料进行观测；仅在下游4km处郝赵村有雨量观测资料，因此，难以通过实测径流资料进行频率分析。因此采用无资料计算方法，包括：Ⅰ采用邯郸地区水文站1974年编“邯郸地区水文计算图表”，Ⅱ采用水利部天津勘测设计院1985年编《海、滦河流域地表水资源》。设计洪水计算：设计洪水是指满足水利工程设计要求的洪水，本次洪水计算，由于坝址处及周围没有国家级水文站，建库以来也无实测洪水资料，缺少大水年资料进行考证，故洪水计算采用暴雨间接推算洪水的途径。设计暴雨及产流计算采用1985年原河北省水利厅勘测设计院与河北省水文总站编制的“河北省中小流域设计暴雨洪水图集”的计算方法；汇流计算采用我省常用的瞬时单位线法。以《防洪标准》GB50201—94作为依据，防洪设计标准为50年一遇，校核标准为500年一遇。为了验证所求洪水是否正确，又用经验公式法求得了各设计洪水的洪峰值。洪水调节：洪水调节仍维持原调度方式，即起调水位为460.7m，无闸门控制，敞泄运用。本次采用试算法，选用不同溢洪道宽度进行调节计算，确定最优宽度，从而可以确定设计洪水位以及校核洪水位，坝高计算：根据SL25-2006规范分别计算最大波浪在坝坡上的爬高、最大峰壅水面高、安全加高，然后计算两个坝顶高程，取最大者关键词：泥沙分析，年径流分析，设计洪水，洪水调节，坝高计算河北工程大学毕业设计IIGeneralDescriptionofDesignGutaireservoirwhichhasbasinareaof100squarekilometerislocatedinthesoutheastofShexian,35kmfarfromthetown.itsbasinareaisupstreamofGuanFangGouwhichisabranchofQingzhangRiver.GuanfangGouisaseasonalriverwhoseflowislargewhileinrainyreasonbutlittleduringotherreasons.GutaiDamsiteislocatedintheeastTaihangmountains.ThereservoirisoneofChanneltypereservoirswithsteepslopesonbothsideoftheriver.Thereservoirhasnoobviousplatform,hundredsofmetershighabove.Channelwidthisgenerallyaround100-400m.Bedrockexposesexceptthebankoftheriver.Besides,ThevegetationisverypoorThereservoirbelongstothenorthtemperatezonecontinentalmonsoonclimate,coldanddryinwinter,hotandrainyinsummer.Formanyyears,theaveragetemperatureof12.5°C.Thedesignistocalculatecharacteristicvalueofthereservoiragainbyusingtheexistingdataaimingtoguaranteethedam’ssafety.Basedonthis,wecanincreaseitseconomicaleffect.Thisdesignisroughlydividedintothefollowingseveralparts:Sedimentanalysis:Afterbuildingtheconstruction,therewillbealotofsedimentdepositioninthefrontofthedamsoastoreducetheCapacityofthereservoir.Ingeneral,usingfixednumberofyearofareservoirisdecidedbyitsdeadcapacity.Thereforetheanalysisofthesedimentcanbeusedtodeterminethedeadcapacityofareservoirsoastodeterminethedeadwaterlevel.Capacityofthesiltisconsideredasthedeadcapacityinthisdesign.Annualflowanalysis:Annualrunoffanalysisistoanalyzetheadvantagesofthereservoircapacitysoastodeterminethenormalstoragelevel.Thereisnohydrologicmeteorologicalobservationstation(station)inGutaireservoirdamsite.Sincetheimpoundmentofthereservoirconstructionin1970,ithasbeennotinboundtrafficofthisarea,orvolumeandwaterlevelofreservoirhydrologicaldata.ThereisproductionofrainfallobservationdataonlyinHaozhaostation.Therefore,itisdifficulttofinishfrequencyanalysisthroughtheobservedrunoffdata.Sowechoosenodatacalculationmethod,includingthat,ⅠusingthehydrologicalstationinHandanarea1974\Handanregionhydrologycalculationchart\,ⅡbyministryofwaterresourcesinTianjinsurveydesigninstitutein1985,“thesea,theluanheriverbasinsurfacewaterresources”.河北工程大学毕业设计IIIThedesignfloodcalculation：Thedesignfloodreferstotheonethatmeetsthedesignrequirementsofthefloodwaterconservancyprojects.inthisfloodcalculationthereisnonationalhydrologicalstationaroundthedamsiteandalsonothemeasuredflooddatasincethebuildingofthelibrary,lackofresearchinrainyyear.Sowechoosetorrentialrainsfloodcalculation,aindirectlyway.Tocalculatedesignstormandrunoff,weuseatlasofsmallwatersheddesignstormfloodinhebeiprovincebytheoriginalsurveydesigninstituteinHebeiprovinceandHebeiprovincialwaterresourcesbureauin1985.Inconfluencecalculationwechoosetheinstantaneousunitlineacommonlyusedmethodinourprovince.WiththefloodcontrolstandardGB50201-94asthebasis,designstandardfloodis50years,checkingstandardfloodis500year.Inordertoverifywhetherthefloodiscorrect,weusetheexperienceformulamethodandobtainthedesignfloodpeakflowvalues.Floodregulatingcalculation:Floodcontrolremainstheoriginalschedulingmethod.Limitedwaterlevelis460.7m.Nogatecontrolandopendrain.wechoosetrialalgorithm.Choosedifferentspillwaywidthforfloodregulatingcalculationsoastodeterminetheoptimalwidth.atlast,decidethedesignfloodlevelandcheckfloodlevel,Thedamcrestelevationcalculation:AccordingtotheSL274-2001specificationwecalculateclimbofthebiggestwavesonthedamslopea,themaximumpeakbywind,theextraheightofsafety.Andthencalculatefourdamcrestelevation,andtakethehighestone.Keyword:sedimentanalysis,annualflowanalysis,thedesignfloodcalculation,floodregulatingcalculation,thedamcrestelevationcalculation河北工程大学毕业设计IV目录设计总说明----------------------------------------------------------------------------------------------------------------------IGeneralDescriptionofDesign----------------------------------------------------------------------------------------------II目录----------------------------------------------------------------------------------------------------------------------------IV1概况------------------------------------------------------