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时间:2020-03-23
《丰满水电站重建工程升鱼机进鱼口水流条件优化措施研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、水利水电技术第48卷2017年第2期丰满水电站重建工程升鱼机进鱼口水流条件优化措施研究刘志国1,郑飞东2,王晓刚2(1.丰满大坝重建工程建设局,吉林吉林132108;2.南京水利科学研究院,江苏南京210029)摘要:为了恢复丰满水电站鱼类洄游通道,在丰满水电站重建工程坝址处设置升鱼机和鱼道。丰满重建工程升鱼机具有所处河道宽,发电机组运行工况复杂、下游水深浅等特点,鱼类寻找升鱼机入口具有较大的难度。为提高升鱼机运行效率,通过数值模拟开展了升鱼机进鱼口水流条件改善措施的专项研究。模拟结果表明,在机组流量1170m3/s、围堰上游主要开挖至187m、局部区域开挖至186m、
2、围堰及下游区域局部开挖至187m的条件下,三台及三台以下机组同时运行时,河道大部分区域流速均小于1.2In/s,鱼类能进入集鱼系统进鱼口。成果显示,文中提出的电站运行方式及下游河道开挖方案能为电站鱼类上溯提供顺畅的洄游通道。关键词:丰满水电站重建工程;升鱼机进鱼口;水流条件;优化措施doi:10.13928/j.cnki.wI曲e.2017.02.018中图分类号:Tvl31.3(234)文献标识码:A文章编号:1000.0860(2017)02一0106.07Studyonoptimizationmea蛐resofnowconditionatiIlletoffishl
3、iftforFengmanIIydropowerStationReconstructionProjectLIUZhigu01,ZHENGFeidon92,WANGXiaogan92(1.FengmanDamReconstructionProjectConstmctionBureau,Jilin132108,Jilin,China;2.NanjingHydraulicResearchInstitute,Nanjing210029,Jian98u,China)Abstmct:Inordertorestorethe6shmigrationpassageofFengmanHyd
4、ropowerStation,矗shliftandfishpassagearea盯angedatthesiteofthereconstmctionprojectofthehydropowerstation.ThefishliftofthepD0jecthasthecharacteristicsofwideriverchan-nel,complicatedoperationconditionforthepowergenemtingunits,shaUowdowllstreamwaterdepth,etc.,andthenitismoredimcultforfishtofi
5、ndouttheinletoft11efishlifttherein.Forenhancingtheopemtionemciencyofthefis}11ift,aspecialstudyonimprovingthenowconditionatthei111etofthe6shIiftiscarriedoutthroughanumericalsimulationconcemed.Thesimulationre·sultshowsthatfishcancomeintotheinletofthefishliftthrou出therelevantfishaggregating
6、system,whenthenowratethmughthepowergeneratingunitis1170m3/s,theupstreamareaofthecof玷rdamisexcavatedtoE1.187mwithlocalareatoE1.187m,thelocalareasofthecof玷rdamanditsdownstreamareaareexcavatedtoE1.187m,threeandlessthanthreepowergenera—tingunitssimultaneouslyoperateandthenowratewithinmostoft
7、heareaoftheriverchannelislessthan1.2m/s.Theresultin—dicatest}lattheoperationmodeofthehydropowerstationanditsdownstreamexcavationschemeproposedhereincanproviderefer-encesforrestoringasmoothmigrationpassagefortheupstream-boundfishthmughthehydmpowerstation.Keywor‘ls:FengmanH
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