l.,).DetailedlaboratoryandinsituinvestigationscarriedoutbyMcFeat-SmithandFowell(,)showedthattherewasacloserelationshipbetweenspecificenergyvaluesobtainedfromcorecuttingtestsandcuttingratesformediumandheavyweightroadheadersseparately.Theyreportedalsothattoolconsumptionmightbepredictedfromweightlossofcutterusedincorecuttingtest.Rockcuttabilityclassificationbasedoncorecuttingtestisusuallycriticizedasthattheeffectofrockdiscontinuitiesarenotreflectedinperformanceprediction.Bilginetal.(,,,)developedaperformanceequationbasedonrockcompressivestrengthandrockqualitydesignationasgivenbelowwhereICRistheinstantaneouscuttingrateinsolidbankm/cuttinghour,Pisthepowerofcuttingheadinhp,RMCIistherockmasscuttabilityindex,rcistheuniaxialcompressivestrengthinMPaandRQDistherockqualitydesignationinpercent.Dunetal.()comparedthemodelsdescribedbyBilginetal.(,)andMcFeat-SmithandFowell(,)inaresearchwo岩土参数等。
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