基本信息
| 标准名称： | 内燃动车承受冲击能力的规定 |
| 中标分类： |
铁路 >>
机车 >>
内燃机车 |
| 发布部门： | 中国人民共和国铁道部 |
| 发布日期： | 1997-01-03 |
| 实施日期： | 1997-07-01 |
| 首发日期： | |
| 作废日期： | |
| 主管部门： | 中国人民共和国铁道部 |
| 提出单位： | 大连内燃机车研究所 |
| 归口单位： | 大连内燃机车研究所 |
| 起草单位： | 大连内燃机车研究所 |
| 起草人： | 卢国营 |
| 出版社： | 中国铁道出版社 |
| 出版日期： | 1997-07-01 |
| 页数： | 4页 |
适用范围
本标准适用于新造内燃动车及其拖车，有司机室的客车和多节动车列车中的客车。
前言
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目录
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引用标准
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所属分类： 铁路 机车 内燃机车
【英文标准名称】:StandardGuideforDevelopmentofGround-WaterMonitoringWellsinGranularAquifers
【原文标准名称】:开发土壤蓄水层中地下水监控井的标准指南
【标准号】:ASTMD5521-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:含水土层;粒状;地下水;监控;自然资源;水质;水井;水域
【英文主题词】:aquifer;groundwater;high-velocity;hydraulicjetting;jetting;mechanicalsurging;monitoringwell;over-pumpingandbackwashing;representativesample;welldevelopment
【摘要】:Aproperlydesigned,installed,anddevelopedground-watermonitoringwell,constructedinaccordancewithPracticeD5092shouldprovidethefollowing:representativesamplesofgroundwaterthatcanbeanalyzedtodeterminephysicalpropertiesandwater-qualityparametersofthesampleorpotentiometriclevelsthatarerepresentativeofthetotalhydraulicheadofthatportionoftheaquiferscreenedbythewell,orboth.Suchawellmayalsobeutilizedforconductingaquifertestsusedforthepurposeofdeterminingthehydraulicpropertiesofthegeologicmaterialsinwhichthewellhasbeencompleted.Welldevelopmentisanimportantcomponentofmonitoringwellcompletion.Monitoringwellsinstalledinaquifersshouldbesufficientlydevelopedtoensurethattheyservetheirintendedobjectives.Welldevelopmentmethodsvarywiththephysicalcharacteristicsofthegeologicformationinwhichthemonitoringwellisscreened,theconstructiondetailsofthewell,thedrillingmethodusedduringtheconstructionoftheboreholeinwhichthewellisinstalled,andthequalityofthewater.Thedevelopmentmethodforeachindividualmonitoringwellshouldbeselectedfromamongtheseveralmethodsdescribedinthisguideandshouldbeemployedbythewellconstructioncontractororthepersonresponsibleformonitoringwellcompletion.Theimportanceofwelldevelopmentinmonitoringwellscannotbeoverestimated;alltoooftendevelopmentisnotperformedoriscarriedoutinadequately.Properandcarefulwelldevelopmentwillimprovetheabilityofmostmonitoringwellstoproviderepresentative,unbiasedchemicalandhydraulicdata.Theadditionaltimeandmoneyspentperformingthisimportantstepinmonitoringwellcompletionwillminimizethepotentialfordamagingpumpingequipmentandin-situsensors,andincreasetheprobabilitythatground-watersamplesarerepresentativeofwatercontainedinthemonitoredformation.1.1Thisguidecoversthedevelopmentofscreenedwellsinstalledforthepurposeofobtainingrepresentativeground-waterinformationandwaterqualitysamplesfromgranularaquifers,thoughthemethodsdescribedhereincouldalsobeappliedtowellsusedforotherpurposes.Otherwell-developmentmethodsthatareusedexclusivelyinopen-boreholebedrockwellsarenotdescribedinthisguide.1.2Theapplicationsandlimitationsofthemethodsdescribedinthisguidearebasedontheassumptionthattheprimaryobjectiveofthemonitoringwellstowhichthemethodsareappliedistoobtainrepresentativewaterqualitysamplesfromaquifers.Screenedmonitoringwellsdevelopedusingthemethodsdescribedinthisguideshouldyieldrelativelysediment-freesamplesfromgranularaquifermaterials,rangingfromgravelstosiltysands.Whilemanymonitoringwellsareconsidered"small-diameter"wells(thatis,lessthanfourinchesininsidediameter),someofthetechniquesdescribedinthisguidewillbemoreeasilyappliedtolarge-diameterwells(thatis,four-inchesorgreaterininsidediameter).1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Allotherunitsinparenthesesareprovidedforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplac......
【中国标准分类号】:P13
【国际标准分类号】:
【页数】:17P.;A4
【正文语种】: