叠梁门分层取水对下泄水温的改善效果-论文.pdf

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1、第47卷第7期天津大学学报(自然科学与工程技术版)、白1_47NO．72014年7月JournalofTianjinUniversity(ScienceandTechnology)Ju1．2014D0I：10．11784／tdxbz201305038叠梁门分层取水对下泄水温的改善效果傅菁菁一，李嘉，芮建良，汤优敏(1．四川大学水力学与山区河流开发保护国家重点实验室，成都610065；2．中国电建华东勘测设计研究院有限公司，杭州310014)摘要：水库升温期泄放低温水现象是大中型水电_T-程普遍面临的环境问题．叠梁门分层取水是提高水库下泄水温的有效工程措

2、施，也是水电工程生态环境保护尤其是水生态保护的重要手段．以滩坑水电站叠梁门分层取水设施投入运行前后的水温观测为基础，从水库调度过程和不同取水口形式等方面分析了叠梁门运行对下泄水温的改善效果．针对库区坝前水温和发电下泄水温对分层取水措施的响应规律，探讨了通过调整门顶水深进一步改善下泄水温的可行性．认为滩坑水库较大的垂向温差是形成下泄低温水的主要原因，叠梁门门顶水深对下泄水温具有决定性影响，应尽可能降低门顸水深以提高下泄水温．提出了优化叠梁门设计及运行管理的建议．关键词：叠梁门；分层取水；低温水；水库；叠梁门门顶水深中图分类号：TV211文献标志码：A文章

3、编号：0493—2137(2014)07．0589—07RaisingDischargeWaterTemperaturebyUsingWater--Level--SelectionwithStoplogGateFuJingjing一，LiJia，RuiJianliang，TangYoumin(1．StateKeyLaboratoryofHydraulicsandMountainRiverEngineering，SichuanUniversity，Chengdu610065，China；2．PowerChinaHuadongEngineeringCorp

4、oration，Hangzhou310014，China)Abstract：Thedischargingoflowtemperaturewaterduringtheairtemperaturerisinlgperiodbecomesageneralenvi—ronmentalproblemthatthelargeandmiddlehydropowerworksarefacing．Takingwaterfromdiferentlayerswithstoploggateisefectivelyappliedtowarmingupthedischargedw

5、aterandprotectingtheenvironment，especiallytheaquaticenvironmentofthehydropowerworks．BasedontheobservedwatertemperaturedatabeforeandaftertheuseofstoploggateinTankenghydropowerstation，theriseinthedischargedwatertemperaturewasanalyzedbyusingthestoploggate，fromtheaspectsofthereservo

6、iroperationprocessanddiferentwaterintaketypes．Furthermore，consideringthetemperature’Sfeedbacktotheuseoftakingwaterfromdiferentlayerswithstoploggate，wedis-cussedthefeasibilityofrisingdischargedwatertemperaturebyadjustingwaterdepthabovethetopofstoploggate．Resultssuggestthatthevert

7、icaltemperaturediferenceofTankenghydropowerstationismainlyinfluencedbythedischargingoflowtemperaturewater．Thewaterdepthabovethetopofstoploggatehasadecisiveinfluenceonthedischargewatertemperature．Soweshoulddecreasewaterdepthabovethetopofstoploggateasmuchaspossibletoraisethedischa

8、rgewatertemperature．Somefurthersuggestionsabout