作者:标准资料网 时间:2024-05-20 06:27:25   浏览:9658   来源:标准资料网

【英文标准名称】:StandardTestMethodforInfiltrationRateofSoilsinFieldUsingDouble-RingInfiltrometer
【原文标准名称】:用双环渗透仪现场测定土壤渗透率的试验方法
【标准号】:ASTMD3385-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D18.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:coefficientofpermeability;hydraulicconductivity;infiltrationrate;infiltrometer;in-situtesting;Mariottetube;Canalleakage;Coefficientofpermeability;Double-ringinfiltrometers;Drainagematerials/systems;Fieldtesting--soil;Groundsur
【摘要】:Thistestmethodisusefulforfieldmeasurementoftheinfiltrationrateofsoils.Infiltrationrateshaveapplicationtosuchstudiesasliquidwastedisposal,evaluationofpotentialseptic-tankdisposalfields,leachinganddrainageefficiencies,irrigationrequirements,waterspreadingandrecharge,andcanalorreservoirleakage,amongotherapplications.Althoughtheunitsofinfiltrationrateandhydraulicconductivityofsoilsaresimilar,thereisadistinctdifferencebetweenthesetwoquantities.Theycannotbedirectlyrelatedunlessthehydraulicboundaryconditionsareknown,suchashydraulicgradientandtheextentoflateralflowofwater,orcanbereliablyestimated.Thepurposeoftheouterringistopromoteone-dimensional,verticalflowbeneaththeinnerring.Manyfactorsaffecttheinfiltrationrate,forexamplethesoilstructure,soillayering,conditionofthesoilsurface,degreeofsaturationofthesoil,chemicalandphysicalnatureofthesoilandoftheappliedliquid,headoftheappliedliquid,temperatureoftheliquid,anddiameteranddepthofembedmentofrings.Thus,testsmadeatthesamesitearenotlikelytogiveidenticalresultsandtheratemeasuredbythetestmethoddescribedinthisstandardisprimarilyforcomparativeuse.Someaspectsofthetest,suchasthelengthoftimethetestsshouldbeconductedandtheheadofliquidtobeapplied,mustdependupontheexperienceoftheuser,thepurposefortesting,andthekindofinformationthatissought.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethoddescribesaprocedureforfieldmeasurementoftherateofinfiltrationofliquid(typicallywater)intosoilsusingdouble-ringinfiltrometer.1.2Soilsshouldberegardedasnaturaloccurringfineorcoarse-grainedsoilsorprocessedmaterialsormixturesofnaturalsoilsandprocessedmaterials,orotherporousmaterials,andwhicharebasicallyinsolubleandareinaccordancewithrequirementsof1.5.1.3Thistestmethodisparticularlyapplicabletorelativelyuniformfine-grainedsoils,withanabsenceofveryplastic(fat)claysandgravel-sizeparticlesandwithmoderatetolowresistancetoringpenetration.1.4Thistestmethodmaybeconductedatthegroundsurfaceoratgivendepthsinpits,andonbaresoilorwithvegetationinplace,dependingontheconditionsforwhichinfiltrationratesaredesired.However,thistestmethodcannotbeconductedwherethetestsurfaceisbelowthegroundwatertableorperchedwatertable.1.5Thistestmethodisdifficulttouseortheresultantdatamaybeunreliable,orboth,inveryperviousorimpervioussoils(soilswithahydraulicconductivitygreaterthanabout10x2212;2cm/sorlessthanabout1x00D7;10x2212;6cm/s)orindryorstiffsoilsthatmostlikelywillfracturewhentheringsareinstalled.Forsoilswithhydraulicconductivitylessthan1x00D7;10x2212;6cm/srefertoTestMethodD5093.