【英文标准名称】:StandardGuideforSelectingaGround-WaterModelingCode
【原文标准名称】:选择地下水模拟编码的标准指南
【标准号】:ASTMD6170-1997(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【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】:codeselection;computermodel;ground-watermodeling;simulation;Codeselection;Fieldinvestigations;Ground-watermodel;Boundaryconditions;Inversemodelingparameters;Outptcharacterization;Parameters;Saturatedground-waterflow;Simulationtes
【摘要】:Ground-watermodelinghasbecomeanimportantmethodologyinsupportoftheplanninganddecision-makingprocessesinvolvedinground-watermanagement.Ground-watermodelsprovideananalyticalframeworkforobtaininganunderstandingofthemechanismsandcontrolsofground-watersystemsandtheprocessesthatinfluencetheirquality,especiallythosecausedbyhumaninterventioninsuchsystems.Increasingly,modelsareanintegralpartofwaterresourcesassessment,protection,andrestorationstudies,andprovideessentialandcost-effectivesupportforplanningandscreeningofalternativepolicies,regulations,andengineeringdesignsaffectinggroundwater.Manydifferentground-watermodelingcodesareavailable,eachwiththeirowncapabilities,operationalcharacteristicsandlimitations.Furthermore,eachground-waterprojecthasitsownrequirementswithrespecttomodeling.Therefore,itisimportantthatthemostappropriatecodeisselectedforaparticularproject.Thisisevenmoreimportantforprojectsthatrequireextensivemodeling,orwherecostlydecisionsarebased,inpart,ontheoutcomeofmodeling-basedanalysis.Systematicandcomprehensivedescriptionofprojectrequirementsandcodefeaturesprovidesthenecessarybasisforefficientselectionofaground-watermodelingcode.Thisstandardguideisintendedtoencouragecomprehensiveandconsistentdescriptionofcodecapabilitiesandcoderequirementsinthecodeselectionprocess,aswellasthoroughdocumentationofthecodeselectionprocess.1.1Thisguidecoversasystematicapproachtothedeterminationoftherequirementsforandtheselectionofcomputercodesusedinaground-watermodelingproject.Duetothecomplexnatureoffluidflowandbioticandchemicaltransportinthesubsurface,manydifferentground-watermodelingcodesexist,eachhavingspecificcapabilitiesandlimitations.Furthermore,awidevarietyofsituationsmaybeencounteredinprojectswhereground-watermodelsareused.Determiningthemostappropriatecodeforaparticularapplicationrequiresathoroughanalysisoftheproblemathandandtherequiredandavailableresources,aswellasdetaileddescriptionofthefunctionalityofcandidatecodes.1.2Thecodeselectionprocessdescribedinthisguideconsistsofsystematicanalysisofprojectrequirementsandcarefulevaluationofthematchbetweenprojectneedsandthecapabilitiesofcandidatecodes.Insufficientlydocumentedcapabilitiesofcandidatecodesmayrequireadditionalanalysisofcodefunctionalityaspartofthecodeselectionprocess.Fig.1isprovidedtoassistwiththedeterminationofprojectneedsintermsofcodecapabilities,and,ifnecessary,todeterminecodecapabilities.1.3Thisguideisoneofaseriesofguidesonground-watermodelingcodesandtheirapplications,suchasGuidesD5447,D5490,D5609,D5610,D5611,D5718,andD6025.1.4Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisguidecannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgement.Notallaspectsofthisguidemaybe......
【中国标准分类号】:D14
【国际标准分类号】:13_060_10
【页数】:19P.;A4
【正文语种】:英语


【英文标准名称】:Aluminiumandaluminiumalloys-Productsforstructuralrailwayapplications,Technicalconditionsforinspectionanddelivery-Part2:Platesandsheets;GermanversionEN13981-2:2004
【原文标准名称】:铝及铝合金.结构性铁路设施用制品的检验和交换用技术条件.第2部分:板和薄板
【标准号】:EN13981-2-2004
【标准状态】:现行
【国别】:
【发布日期】:2004-10
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;铝合金;产品;适宜性;板;承载;轧制的;铁路;铝;铝薄板材;铁路设施;铁道车辆结构;合格证明书;轧制品;铁道车辆;材料性能;规范(验收);试验;特性;薄板材;尺寸公差;焊接接头;货物箱;检验;应用;使用;有色金属;交货条件
【英文主题词】:Aluminium;Aluminiumalloys;Aluminiumsheets;Applications;Certificatesofconformity;Definition;Definitions;Deliveryconditions;Dimensionaltolerances;Inspection;Loadbearing;Materialproperties;Non-ferrousmetals;Plates;Products;Properties;Railwayapplications;Railwayvehicleconstruction;Railwayvehicles;Railways;Rolled;Rolledproducts;Sheetmaterials;Sheets;Specification(approval);Suitability;Testing;Use;Waggonboxes;Weldedjoints
【摘要】:
【中国标准分类号】:H61
【国际标准分类号】:77_150_10
【页数】:12P.;A4
【正文语种】:英语