Designation:D6032/D6032M−17StandardTestMethodforDeterminingRockQualityDesignation(RQD)ofRockCore1ThisstandardisissuedunderthefixeddesignationD6032/D6032M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationoftherockqualitydesignation(RQD)asastandardparameterindrillcoreloggingofacoresampleinadditiontothecommonlyobtainedcorerecoveryvalue(PracticeD2113);howevertheremaybesomevariationsbetweendifferentdisciplines,suchasminingandcivilprojects.1.2ThisstandarddoesnotcoveranyRQDdeterminationsmadebyotherboreholemethods(suchasacousticoropticalteleviewer)andwhichmaynotgivethesamedataorresultsasontheactualcoresample(s).1.3TherearemanydrillingandlithologicvariationsthatcouldaffecttheRQDresults.Thisstandardprovidesexamplesofmanycommonandsomeunusualsituationsthattheuserofthisstandardneedstounderstandtousethisstandardandcannotexpectittobeallinclusiveforalldrillingandloggingscenarios.Theintentistoprovideabaselineofexamplesfortheusertotakeownershipandwatchforsimilar,additionaloruniquegeologicalandproceduralissuesintheirspecificdrillingprograms.1.4ThisstandardusestheoriginalcalculationmethodsbyD.U.DeeretodetermineanRQDvalueanddoesnotcoverothercalculationoranalysismethods;suchasMonteCarlo.1.5TheRQDinthistestmethodonlydenotesthepercent-ageofintactandsoundrockinacoreinterval,definedbythetestprogram,andonlyoftherockmassinthedirectionofthedrillholeaxis,ataspecificlocation.Acoreintervalistypicallyacorerunbutcanbealithologicalunitoranyotherintervalofcoresamplerelevanttotheproject.1.6RQDwasoriginallyintroducedforusewithconven-tionaldrillingofN-sizecorewithdiameterof54.7mm(2.155in.).However,thistestmethodcoversalltypesofcorebarrelsandcoresizesfromBQtoPQ,whicharenormallyacceptableformeasuringdeterminingRQDaslongasproperdrillingtechniquesareused...
