ASTM D5243-1992(2007) 在地下管道水的明渠流量测量的试验方法

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【英文标准名称】:StandardTestMethodforOpen-ChannelFlowMeasurementofWaterIndirectlyatCulverts
【原文标准名称】:在地下管道水的明渠流量测量的试验方法
【标准号】:ASTMD5243-1992(2007)
【标准状态】:现行
【国别】:
【发布日期】:1992
【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】:D19.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:水;试验;水域;排量测量
【英文主题词】:floods;open-channelflow;waterdischarge
【摘要】:Thistestmethodisparticularlyusefultodeterminethedischargewhenitcannotbemeasureddirectlywithsometypeofcurrentmetertoobtainvelocitiesandsoundingequipmenttodeterminethecrosssection.SeePracticeD3858.Evenunderthebestofconditions,thepersonnelavailablecannotcoverallpointsofinterestduringamajorflood.Theengineerortechniciancannotalwaysobtainreliableresultsbydirectmethodsifthestageisrisingorfallingveryrapidly,ifflowingiceordebrisinterfereswithdepthorvelocitymeasurements,orifthecrosssectionofanalluvialchannelisscouringorfillingsignificantly.Underfloodconditions,accessroadsmaybeblocked,cablewaysandbridgesmaybewashedout,andknowledgeofthefloodfrequentlycomestoolate.Therefore,sometypeofindirectmeasurementisnecessary.Theuseofculvertstodeterminedischargesisacommonlyusedpractice.1.1Thistestmethodcoversthecomputationofdischarge(thevolumerateofflow)ofwaterinopenchannelsorstreamsusingculvertsasmeteringdevices.Ingeneral,thistestmethoddoesnotapplytoculvertswithdropinlets,andappliesonlytoalimiteddegreetoculvertswithtaperedinlets.InformationrelatedtothistestmethodcanbefoundinISO748andISO1070.1.2Thistestmethodproducesthedischargeforafloodeventifhigh-watermarksareused.However,acompletestage-dischargerelationmaybeobtained,eithermanuallyorbyusingacomputerprogram,foragaugelocatedattheapproachsectiontoaculvert.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIunitsgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A52
【国际标准分类号】:17_120_20
【页数】:42P.;A4
【正文语种】: