标准名称：	紧固件 热处理钢自攻螺钉－机械性能
英文名称：	Tapping screws of heat treated steel-Mechanical properties
中标分类：	机械 >> 机械综合 >> 技术管理
发布日期：	1984-09-04
实施日期：	1985-03-01
首发日期：	1900-01-01
作废日期：	1900-01-01
出版日期：	1900-01-01
页数：	5页

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【英文标准名称】:StandardGuideforGeotechnicalMappingofLargeUndergroundOpeningsinRock
【原文标准名称】:岩石中大型地下巷道地质技术图绘制的标准指南
【标准号】:ASTMD4879-2008
【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】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:caverndesign;civilundergroundexcavations;cleavageplanes;discontinuities;excavationsite;face;faultzones;geotechnicalmapping;mapping;mines;rock;rockmassresponsemapping;subsurfaceopenings;surfaceanalysis;undergroundenvironments;un
【摘要】:Thegeotechnicalmapresultingfromapplicationoftheproceduressetforthinthisguideispermanentdocumentationwhichmaybeusedinthefollowingways:4.1.1Compilationofbasicgeotechnicalinformation.4.1.2Designverification.4.1.3Evaluationofpreconstructionassumptions.4.1.4Instrumentationlocationanddataanalyses.4.1.5Identificationandlocationofproblemsandpotentialproblems.4.1.6Provisionofrecordsforcostandclaimsadjustments.4.1.7Provisionofinformationusefulinfuturesimilarornearbyprojects.Constructionorsafetyconsiderationsmaylimittheabilitytomaptothefullextentoftheproceduresofthisguide.Therearesignificantbenefitstomappingasclosetotheadvancingfaceoftheopeningasisfeasible,dependinguponsafetyandlogisticalconsiderations.Mappingemphasisshouldbeplacedonthosegeotechnicalfeatureswhichareanticipatedorarefoundtoaffectoverallperformanceoftheexcavation.Dust,water,lackoflight,limitedexposures,orotherphysicalfactorsmayaffectthequalityofthemapping.1.1Thisguiderecommendsproceduresformappinglargesubsurfaceopeningsmadeforeithercivilorminingpurposes.1.2Themappingprovidescharacterizationanddocumentationoftheconditionoftherockmassattheexcavationsurface.1.3Themappingmaybeaccomplishedduringorafterexcavation;however,ifpossible,themappingshouldbecompletedbeforeconstructionactivitymodifiesorobscuresthesurfaceconditionandespeciallyanycriticalgeologicfeatures.1.4Themappinglevelofdetailshallbeappropriateforitsintendeduse.Thismappingdoesnotreplacerigorousinvestigationstodevelopphysicalormathematicalmodelsofbehavior.1.5Whensoilorsoil-likematerialsareencounteredintheexcavation,theyshouldalsobeappropriatelymappedanddescribedinaccordancewithapplicableASTMstandards.1.6Manyoftheprocedurespresentedinthisguidemaybeused,aswell,tomapsurfaceexcavations.1.7Themappingdoesnotreplacethesurveyingofexcavationgeometry.1.8AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD60261.9Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard1.10Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.11Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Theword"Standard"inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.
【中国标准分类号】:P21
【国际标准分类号】:07_040
【页数】:12P.;A4
【正文语种】:英语