Page 59 - 2023年第54卷第9期
P. 59
Developmentoftheundergroundreservoirsofpumped - storage
hydropowerandkeyhydraulicsissues
GAOXueping,YUANZeyu
(StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,TianjinUniversity,Tianjin 300072,China)
Abstract:Therearemorethan1millionabandonedminesintheworld,andthenumberofabandonedminesin
Chinawillreach15 ,000by2030.Howtorationallyutilizetheundergroundspaceresourcesofabandonedmineshas
becomeahottopicinthefieldofenergyandenvironmentalprotection.Theundergroundreservoirsofpumped - stor
agehydropowercanbeconstructedbyusingabandonedspacessuchastunnels ,chambers,ormined - outareas.
However ,becauseofitsnarrowandclosedundergroundspaces,itiscompletelydifferentfromtheopenspaceswa
terareaofthesurfacereservoirsofconventionalpumped - storagehydropower.Thehydrauliccharacteristicsofthe
undergroundreservoirsarecompletelydifferentfromthoseofthesurfacereservoirswhenthepumped - storagehydro
powerisbuiltandoperated.Therefore,thispaperanalyzesthemodeandcharacteristicsoftheundergroundreser
voirsofpumped - storagehydropower.Theprogressofundergroundreservoirconstructionofpumped - storagehydro
powerathomeandabroadissummarized.Thekeyhydraulicissuesoftheundergroundreservoirsofpumped -
storagehydropowerareputforward.Theresearchresultswillprovideguidanceforthescientificuseofabandoned
minestobuildundergroundreservoirsofpumped - storagehydropower.
Keywords:pumped - storagehydropower;abandonedmines;undergroundreservoirs;hydrauliccharacteristics
(责任编辑:李福田)
(上接第 1057页)
Researchonapplicationofinfraredthermalimagingtechnology
ingeomechanicalmodeltests
DINGZelin,WANGXiangyu,XULiangjie,WANGJing
(SchoolofWaterConservancy,NorthChinaUniversityofWaterResourcesandElectricPower,Zhengzhou 450046,China)
Abstract:Atpresent,themeasurementmethodsofgeomechanicalmodeltestsaremainlycontactedmeasurement
methodssuchaselectronicmeasurementandfibergratingmeasurement,andthecontactmeasurementequipment
willaffectthemodelstructureintheprocessofarrangement.Inordertoexplorethepossibilityofanalyzingthe
geomechanicalmodeltestfromtheenergypointofviewandtorealizethepurposeofnon - contactandfigurative
measurementduringthetest ,infraredthermalimagingreal - timemeasurementtechnologywasadoptedtomeasure
themodeloverloaddamagetestinthegeomechanicalmodeltestofcementedsandandgraveldam (CSGdam for
short ).Theresultsofthestudyshowedthat:(1)thestructuralsurfacessuchasfaults,fractures,andjointsin
themodelwillleadtolocaltemperaturerisewhenthestructuralsurfaceinthemodelfoundationisextrudedand
misshapedunderexternalload;itwillcauseitslocaltemperaturetorise;thecontrastofmodelthermographyand
thevalueofmaterialtemperaturechangecanbeusedasabasisfordiscerningdaminstability. (2)Inthemodelma
terialdamagetest ,thetemperaturechangevalue Δ Tofmaterialdamagewasobtainedbythermalimagerintherangeof
1.2 - 1.8℃,andthedamageareashowsobvioustemperaturechange,andobviousanomaliescanbefoundfrom
thetestsiteandinfraredimages ,andthedamagecriterionbasedonthermalimagingtestisproposedinthisway.
=
(3)WhenthemodeltestwasoverloadedtotheoverloadsafetyfactorK p 6.6 ,thetemperaturechangevaluesof
eachstructuralsurfacepenetrationareaofthefoundationinitsthermalimagereachedthedamagethreshold ,and
thenthetestdamwasdestabilizedbyslipandoverturning.
Keywords:geomechanicalmodeltests;concretemeasurement;infraredthermography;structuralsurfacetem
perature
(责任编辑:李 娜)
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