Page 111 - 《水资源与水工程学报》2024年第5期
P. 111
!35 "!5 # & ' ( ) & * + , - Vol.35No.5
2024 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2024
DOI:10.11705/j.issn.1672-643X.2024.05.13
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MNFOP:TV649 QRSTU:A QVWP:1672643X(2024)05010707
Effectoftopographicfactorsontheseepagefieldofatailingsdam
XUZengguang,ZONGDan,CAOCheng
(StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,Xi’an710048,China)
Abstract:Theseepagesafetyandstabilityoftailingsdamisseriouslyaffectedbyterrainconditions.Rea
sonablesiteselectionoftailingsreservoiristhefoundationofsafeandstableoperationofthedambodyin
thelaterstage.Basedonthenumericalsimulationmethod ,theinfluenceofindividualtopographicfactors
ontheseepagefieldofdambodyisinvestigatedbychangingthebankslope ,valleywidthandlongitudinal
sloperatioofgullyandvalley.Itisfoundthattheslopesofbothsidesofthevalleyhavethegreatestin
fluenceonthesaturationlineofthetailingsdam ,followedbythebottomwidthandthelongitudinalslope
ratioofgullyandvalley.Atthesametime ,thethreedimensionalseepagenumericalmodelofatailings
reservoirisconstructedbasedonthemeasureddigitalelevationmodel (DEM)dataoftheconcreteproject
andtheformationsurveydata.Subsequently,thetopographicfactorsareextractedtoconductanumerical
analysisoftheseepagefieldofthedambody.Itisfoundthatthevalleytopographyisthemainfactoraf
fectingthegroundwaterflowstate ,anditissuggestedtochoosetheterrainwithrelativelysmalllongitudi
nalslopeofgullyandrelativelyflatterrainasthesiteselectionrequirementsoftailingsreservoirs.Onthis
basis ,therelationshipformulabetweenterrainfactorsandtheelevationofthesaturationlineestablished
bythemultiplelinearregressionmodel.Theresearchresultscanprovideatheoreticalbasisforthesafety
andstabilitydesignoftailingsdams.
Keywords:tailingsdam;topographicfactor;saturationline;seepagefield;multiplelinearregression
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