Page 119 - 《水资源与水工程学报》2022年第2期
P. 119

!33 " ! 2 #                       & ' ( ) & * + , -                               Vol.33No.2
               2022 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2022

            DOI:10.11705/j.issn.1672-643X.2022.02.15


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               HIAJK:TV135.2   LMNOP:A    LQRK:1672643X(2022)02011509

                             Operatingcharacteristicsofmultitunneljointflood
                                         dischargeandventilationsystem

                                                                                              1,3,4
                                                                                2
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                                              1
                               1
                        MABin,WEIJiangen,WANGXiaoqun              ,DUShuaiqun,LIANJijian
                   (1.StateKeyLaboratoryofHydraulicEngineeringSimulation&Safety,TianjinUniversity,Tianjin300072,China;
                   2.PowerChinaGuiyangEngineeringCorporationLimited,Guiyang550081,China;3.SchoolofWaterConservancy
                    andHydroelectricPower ,HebeiUniversityofEngineering,Handan056038,China;4.HebeiKeyLaboratoryof
                            IntelligentWaterConservancy,HebeiUniversityofEngineering,Handan056038,China)
               Abstract:Combingthewater-airstratifiedflowtheory,atheoreticalcalculationmodelofthejointflood
               dischargeandventilationsystemofdischargeandspillwaytunnelsinRumeiHydropowerStationisestab
               lishedtoclarifytheventilationcharacteristicsofthemultipletunnels.Thevariationpatternsofnegative
               pressureineachtunnel ,windspeedandventilationquantitychangeofeachairductwiththeheightoffree
               spaceabovewaterindischargetunnelsandthecrosssectionalsizeofairductsareplottedandsummarized.
               Theresultsshowthatthenegativepressureofthedischargetunnelspresentedthepatternofthreepartitions
               withthecoexistenceofminimumandmaximumvalues ,whereasthatofthespillwaytunnelsshowednoob
               viouschange;themaximum valueofwindspeedandventilationquantityofairductoccurredinthedis
               chargetunnels,whereastheminimumvalueoftheventilationquantityofairductoccurredinthespillway
               tunnels.Anoverallconsiderationoftheventilationparameterchangesineachtunnelcanprovideadesign
               basisforthesizeselectionofdischargetunnelsandairductsinthejointflooddischargesystem.
               Keywords:ventilationquantity;multi-tunneljointflooddischarge;freespaceabovewaterinadischarge
               tunnel ;airduct;dischargetunnel
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