ASTM D7401-2008 实验室测定石锚能力的拉伸和跌落试验的标准试验方法
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【英文标准名称】:StandardTestMethodsforLaboratoryDeterminationofRockAnchorCapacitiesbyPullandDropTests
【原文标准名称】:实验室测定石锚能力的拉伸和跌落试验的标准试验方法
【标准号】:ASTMD7401-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:impactenergy;impactvelocity
【摘要】:Forasupportsystemtobefullyeffective,thesupportsystemmustbeabletocontainthemovementofrockmaterialduetoexcavationstressrelease,slabbing,etc.Datafromtheloadtestsareusedbyengineerstodesigntheappropriatesupportsystemtoimprovesafetyandstabilityofundergroundsupportsystems.TestMethodsD4435andD4436areusedforin-situloadtests.Thelocalcharacteristicsoftherock,suchasroughnessandinducedfractures,aresignificantfactorsintheanchorstrength.Thematerialusedtosimulatetheboreholesurfaceshouldbesufficientlyroughenedsothatfailureoccursintherockanchorandnotatthesimulatedanchor-rocksurface.Inthecaseofsteelpipe,internalthreadingusingdifferentspacinganddepthisaccomplishedusingamachinistx2019;slathetosimulateroughness.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthesefactors.1.1Thesetestmethodscoverthequantitativedeterminationoftheworkingandultimatestaticordynamiccapacitiesoffullscalerockanchors.Dynamiccapacitiesaredeterminedtosimulaterockburstandblastingconditions(1).Therockanchorsareinstalledinsteelpipetosimulatestandardboreholessizes.Rockanchorcapacitiesaredeterminedasafunctionofresintosteelboltbondstrengthandsteelboltyieldstrength.Thesetestsarenotintendedtodeterminerockanchortoboreholerocksurfaceshearstrength.1.2Thesetestmethodsareapplicabletomechanical,resin,orothersimilaranchorsystems.1.3Twomethodsareprovidedtodeterminethecapacitiesofrockanchors,asfollows:1.3.1MethodA8212;Usingahorizontalhydraulicallyloadedpulltestsystem.1.3.2MethodB8212;Usingaverticaldynamicallyloadeddroptestsystem.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P22
【国际标准分类号】:93_020
【页数】:7P.;A4
【正文语种】:英语
【原文标准名称】:实验室测定石锚能力的拉伸和跌落试验的标准试验方法
【标准号】:ASTMD7401-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:impactenergy;impactvelocity
【摘要】:Forasupportsystemtobefullyeffective,thesupportsystemmustbeabletocontainthemovementofrockmaterialduetoexcavationstressrelease,slabbing,etc.Datafromtheloadtestsareusedbyengineerstodesigntheappropriatesupportsystemtoimprovesafetyandstabilityofundergroundsupportsystems.TestMethodsD4435andD4436areusedforin-situloadtests.Thelocalcharacteristicsoftherock,suchasroughnessandinducedfractures,aresignificantfactorsintheanchorstrength.Thematerialusedtosimulatetheboreholesurfaceshouldbesufficientlyroughenedsothatfailureoccursintherockanchorandnotatthesimulatedanchor-rocksurface.Inthecaseofsteelpipe,internalthreadingusingdifferentspacinganddepthisaccomplishedusingamachinistx2019;slathetosimulateroughness.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthesefactors.1.1Thesetestmethodscoverthequantitativedeterminationoftheworkingandultimatestaticordynamiccapacitiesoffullscalerockanchors.Dynamiccapacitiesaredeterminedtosimulaterockburstandblastingconditions(1).Therockanchorsareinstalledinsteelpipetosimulatestandardboreholessizes.Rockanchorcapacitiesaredeterminedasafunctionofresintosteelboltbondstrengthandsteelboltyieldstrength.Thesetestsarenotintendedtodeterminerockanchortoboreholerocksurfaceshearstrength.1.2Thesetestmethodsareapplicabletomechanical,resin,orothersimilaranchorsystems.1.3Twomethodsareprovidedtodeterminethecapacitiesofrockanchors,asfollows:1.3.1MethodA8212;Usingahorizontalhydraulicallyloadedpulltestsystem.1.3.2MethodB8212;Usingaverticaldynamicallyloadeddroptestsystem.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P22
【国际标准分类号】:93_020
【页数】:7P.;A4
【正文语种】:英语
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