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【英文标准名称】:StandardGuideforConceptualizationandCharacterizationofGround-WaterSystems
【原文标准名称】:地下水系统概念化和特性化的标准指南
【标准号】:ASTMD5979-1996(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.21
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:characterization;conceptualization;groundwater;ground-watermodeling;ground-watersystems;Characteristics/characterization;Conceptualsitemodel(CSM);Ground-watermodel
【摘要】:Conceptualizationandcharacterizationofaground-watersystemisfundamentaltoanyqualitativeorquantitativeanalysis.Thisconceptualizationbeginswithsimpleabstractionsintheinvestigator''smind,emphasizingthemajorcomponentsofthestudiedsystem,thatcanberenderedinqualitativetermsorsimpleillustrations.Theextentoffurtherdevelopmentoftherepresentationofthesystemdependsonthecharacteroftheground-waterproblemandtheprojectobjective.Theabstractconceptmaysuffice,oritmaybefurtherdefinedandquantifiedthroughuseofanalyticalmodelsofincreasingcomplexity,and,insomecases,numericalmodelsmaybeemployed.Ifnumericalmodelsareused,thelevelofdetailandsophisticationoffeaturesrepresentedinthemodelislikelytoincreaseastheprojectdevelops.Evolutionofconceptualizationofaground-waterflowsystemshouldbeterminatedwhentheresultsoftherelatedanalysesaresufficientfortheproblembeingaddressed.Thisguidemaybeusedinthefollowing:Evaluatingnaturalvariationsinground-waterflowsystems.Evaluatinganthropogenicstressesonground-waterflowsystems,suchaspumpingforwatersupply,irrigation,inducedinfiltration,orwellinjection.Evaluatingpresenceandvelocityofground-watercontaminants.Designingandselectingmathematicalmodelstosimulateground-watersystems;andcompletingmodelschematizationandattributionbasedontheproblemdefined,characterizedground-waterflowsystem,andmodel(s)selected.Designingground-waterremediationsystems.Thisguideisaflexibledescriptionofspecifictechniquesandinvestigationrequirements;methodsdefinedbyotherASTMStandardsornon-ASTMtechniquesmaybeappropriateinsomecircumstancesand,afterdueconsideration,someofthetechniqueshereinmaybeomitted,altered,orenhanced.Acomprehensivelistofitemstobeconsideredconceptualizationandcharacterizationareincludedinthemainheadings(Sections6through13)andfirstsubheadings(forexample,7.1and8.1).Inkarstandfracturedrockhydrogeologicsettings,thisguideshouldbeusedinconjunctionwithGuideD5717.Themethodsandamountofeffortrequiredforconceptualization,characterization,andquantificationofground-watersystemsformodelingorotherapplicationswillvarywithsiteconditions,objectivesofinvestigation,andinvestigatorexperience.Thisguidedoesnotreplaceproperacademictrainingandexperienceinhydrogeologicprinciples,oringround-watersystemanalysisandquantification.Thisguidedoesnotsetmandatoryguidelinesanddoesnotconstitutealistofnecessarystepsorproceduresforallinvestigations.Thisguidemaybeusedforprojectplanninganddatacollection,butdoesnotprovidespecificaspectsforfieldcharacterizationtechniques.RefertoTableX1.1inGuideD5730,PracticeD5254,andRefs(2,3,4,and5)forfurtherguidanceregardingfieldcharacterizationtechniques.Thisguidemaybeusedtogeneratethenecessaryinformationaspartoftheprocessformodelselection,design,andasinputtomodelschematization,includingthesimplificationofhydrologicsystemsandtherepresentationofhydrogeologicparametersinmodels.RefertoRef(6)forfurtherguidance.1.1Thisguidecoversanintegrated,stepwisemethodforthequalitativeconceptualizationandquantitativecharacterizationofground-waterflowsystems,includingtheunsaturatedzone,fornaturalorhuman-inducedbehaviororchanges.1.2Thisguidemaybeusedatanyscaleofinvestigation,includingsite-specific,subregional,andregionalapplications.1.3Thisguidedescribesaniterativeprocessfordevelopingmultipleworkinghypothesesforcharacte......
【中国标准分类号】:P12
【国际标准分类号】:13_060_10
【页数】:8P.;A4
【正文语种】:英语