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《魚類下行過(guò)壩的導(dǎo)魚柵系統(tǒng)設(shè)計(jì)及試驗(yàn)研究.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、水利水電技術(shù)第48卷2017年第7期魚類下行過(guò)壩的導(dǎo)魚柵系統(tǒng)設(shè)計(jì)及試驗(yàn)研究李祖祥1,李衛(wèi)明2,艾志強(qiáng)2,3(1.云南省水利水電投資有限公司,云南昆明650051;2.三峽大學(xué)水利與環(huán)境學(xué)院,湖北宜昌443002;3.云南省水利水電勘測(cè)設(shè)計(jì)研究院,云南昆明650021)摘要:以龍開12水利樞紐為例,提出一種輔助魚類下行過(guò)壩的導(dǎo)魚柵系統(tǒng)方案。該方案首先結(jié)合大壩泄流建筑物的特點(diǎn)確定導(dǎo)魚柵系統(tǒng)的布置位置,然后以鳙魚為試驗(yàn)對(duì)象,用控制變量法并選擇四種導(dǎo)魚柵葉片角(150、300、45。、900)和三種導(dǎo)魚柵布置角(150、300、450)
2、在室內(nèi)開展模型試驗(yàn),以確定最優(yōu)運(yùn)行工況。研究結(jié)果表明,導(dǎo)魚柵系統(tǒng)布置在該樞紐的灌溉引水12最佳。試驗(yàn)中,當(dāng)布置角控制為30。時(shí),四種葉片角下的魚類通過(guò)率分別為53%、95%、59%和72%;當(dāng)葉片角控制為30。時(shí),三種布置角下的魚類通過(guò)率分別為53%、95%和4l%。因此,在導(dǎo)魚柵葉片角和布置角同為300時(shí),導(dǎo)魚柵系統(tǒng)輔助魚類下行的效率最高,通過(guò)率為95%。研究成果可為我國(guó)類似導(dǎo)魚柵系統(tǒng)設(shè)計(jì)提供參考。關(guān)鍵詞:導(dǎo)魚柵;模型試驗(yàn);龍開口水利樞紐;魚類洄游doi:10.13928/j.enki.wrahe.2017.07.015中圖分
3、類號(hào):TV691文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000—0860(2017)07—0085-06Experimenalstudyanddesignoffish-gllimngrailingsforfishpassingdownwardsoverdamLIZuxian91,LIWeimin92,AIZhiqian92·3(1.YunnanWaterConservancyandHydropowerInvestmentCompanyLimited,Kunming650051,Yunnan,China;2.CollegeofHydraulic
4、andEnvironmentalEngineering,ChinaThreeGorgesUniversity,Yichang443002,Hubei,China;3.YunnanInstituteofWater&HydropowerEngineeringInvestigation,DesignandResearch,Kunming650021,Yunnan,China)Abstract:BytakingLongkaikouWaterControlProjectasthestudyease,aschemeforassistingf
5、ishtopassdownwardsoverdamisproposedherein.Inthescheme.thelayoutlocationofthefish—guidingrailingssystemisdeterminedatfirstinaccordancewiththecharacteristicsofthedischargestructureofthedam,andthenanindoormodelexperimentiscarriedout,bytakingAristich-thysnobilisa8theobje
6、ct.withthecontrolvariablemethodandthroughtheselectingfourkindsofbladeangles(15。,30。,45。and90。)andthreekindsofthelayoutangles(15。,30。and45。)ofthefish-guidingrailings,SOastodeterminetheoptimal叩-erationcondition.Thestudyresultshowsthatitisbesttolaythefish—guidingrailing
7、ssystemattheirrigationoutletoftheproject.Intheexperiment,whenthelayoutangleiscontrolledtobe30。,thefishpassingratesundertheconditionsoffourbladeanglesare53%,95%,59%and72%respectively,whilethefishpassingratesundertheconditionsofthreelayoutanglesare53%,95%and41%respecti
8、velywhenthebladeangleiscontrolledtobe30。.Therefore,tlleefficiencyofthefish-guidingrailingssys-ternfromassistingfishtopassdownwardsi