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时间:2020-03-26
《立面二维水质模型预测小浪底出库水质研究.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、第36卷第12期人民黄河Vo1.36.No.122014年12月YELL0WRIVERDee..2O14【水环境与水生态】立面二维水质模型预测小浪底出库水质研究肖翔群,夏润亮,伍丽平,毛予捷,毛玉霞,闫海富,高天立(1.黄河水资源保护科学研究院,河南郑州450004;2.黄河水利科学研究院,河南郑州450003)摘要:针对小浪底水库下半段库区出现水质水温分层现象,建立基于标准k—s紊流双方程的立面二维水质模型对小浪底出库水质进行了预测。通过示踪试验确定水质模型的参数,并将氨氮含量作为预测水质参数,采用实测数据对模型进行了验证,
2、结果表明:小浪底坝下段氨氮含量预测值与实测值相比较平均相对误差为12%,坝前断面垂向氨氮含量预测值与实测值相比平均相对误差为17%,表明该水质模型可以较准确预测小浪底出库水质。应用该模型预测2013—2014年度黄河调水期小浪底出库水质表明:2014年3月10日小浪底出库水氨氮含量将达到1.20mg/L(超标),应从3月1日开始加大陆浑水库、故县水库闸门开启度,进行稀释调度,以确保调水水质不超标。关键词:水量调度;水质预测;水质模型;示踪试验;小浪底水库中图分类号:X524文献标志码:Adoi:10.3969/j.issn.1
3、000—1379.2014.12.023ResearchonthePredictionofWaterQualityofOutflowWaterfromXiaolangdiReservoirwithVertical2DWaterQualityModelXIAOXiang—qun,XIARun—liang,WULi—ping,MAOYu-jie,MAOYu.xia,YANHai—fu,GAOTian—li。(1.YellowRiverWaterResourcesProtectionResearch,Zhengzhou450004,
4、China;2.YellowRiverInstituteofHydraulicResearch,Zhengzhou450003,China)Abstract:AimingatwatertemperatureandwaterqualitystratificationphenomenonoccurringinthelowerhalfofthetheXiaolangdiReservoirdur-ingtheYellowRiverwaterdiversionandlowtemperatureperiod,thevertical2Dwa
5、terqualitymodelwasestablishedbasedonk一£tWO—equationofturbulence,andoutletwaterqualityofXiaolangdiReservoirwasestimated.Ammonianitrogenasaforecastwaterqualityparameter,themodelwasverifiedbyactualvalue.TheresultshowsthethattheoutletwateroftheXiaolangdiReservoirmeanrel
6、ativeelTorofammonianitrogenconcen—trationbetweenforecastvalueandactualvalueis12%,verticaldistributionofammonianitrogenconcentrationinfrontofXiaolangdiReservoirdammeanrelativeerrorbetweenforecastvalueandactualvalueis17%.ItmeanstheXiaolangdiReservoiroutflowwaterqualit
7、ycanbeaccuratelypre·dictedbythe?waterqualitymode1.ThemodelisusedtopredicttheXiaolangdiReservoiroutflowwaterqualityduringtheYellowRiverwaterregu—lationfrom2013to2014.Theresultshowsthattheammonianitrogenconcentrationwillreachto1.2mg/l(exceedthestandards)onMarch10,2014
8、,andthesluicegateopeningdegreeofLuhunReservoirandGuxianReservoirshouldbeincreasedtoregulatewatersuppliesforthedilutionofthepollutiononMarc
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