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【英文标准名称】:StandardTestMethodforErodibilityDeterminationofSoilintheFieldorintheLaboratorybytheJetIndexMethod
【原文标准名称】:喷射指示法现场或实验室测定土壤腐蚀性的标准试验方法
【标准号】:ASTMD5852-2000(2007)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D18.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:erosion;jet;soil;water
【摘要】:Waterflowinnatureexertsaforceonsoilsthatresultsinerosion.Erosionpotentialofasoilisofconcerninvegetatedchannels,roadembankments,dams,levees,spillways,constructionsites,etc.Thejetindexmethodisintendedtoprovideastandardmethodofexpressingerosionresistance;toassistthosewhoworkwithdifferentsoilsandsoilconditionstomeasureerosionresistancefordesignpurposes;andtoprovideacommonsystemofcharacterizingsoilpropertiestodevelopperformanceandpredictionrelationships.Thejetindextestisnotsuitedfordeterminingerodibilityofsoilsthathavestructurecharacteristicslargerthanthescaleofthejettestingdevice.Forexample,theerodibilityofsoilthathasadominantsoilstructureof7to8cmorlarger(thatis,aggregate,clod,orparticlesize),thatmightplayakeyroleinthedetachmentprocess,shouldnotbeestimatedwiththejetindextest.Careshouldbetakenthatthetestsampleandtestarerepresentativeofexpectedconditionsatthesiteunderinvestigation.Ifitisknowninadvancethatthesoilwillbesaturatedpriortoanerosionevent,thenthesoilshouldbetestedinthatcondition.Atpresent,theeffectsofwaterchemistryondetachmentrateareunknown.Therefore,waterqualityduringtestingshouldbesimulatedascloseaspossibletothewaterqualityanticipatedduringactualerosion.Note18212;Thequalityoftheresultproducedbythisstandardisdependuponthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetestingandsampling.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoverstheestimationoferodibilityofasoilbyajetindexmethod.Thistestmethodinvolveseitherpreparingafieldsiteorobtainingarelativelyundisturbedsoilsampleandthesubsequentactivitiesforthedeterminationoftheerodibilityofsoil.Thistestmethodalsomayberunoncompactedsamplesinthelaboratory.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B10
【国际标准分类号】:13_080_20
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Earth-movingmachinery;Excavators;Operator'scontrols
【原文标准名称】:土方机械.挖土机.操作控制装置
【标准号】:ISO4557-1982
【标准状态】:作废
【国别】:国际
【发布日期】:1982-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC127
【标准类型】:()
【标准水平】:()
【中文主题词】:规范(批准);使用要求;机铲挖土机;布置;人类工效学;控制装置;挖掘机械;土方机械;操作元件;液压挖掘机;土方机械设备
【英文主题词】:
【摘要】:
【中国标准分类号】:P97
【国际标准分类号】:53_100
【页数】:2P;A4
【正文语种】:英语