Research present situation and analysis on classification of rock drillability  

作　　者：张志红 马芹永 

出　　处：《Journal of Coal Science & Engineering(China)》2001年第1期39-45,共7页煤炭学报（英文版）

基　　金：EducationDepartmentofAnhuiProvince (99j10 198)

摘　　要：Rock drillability reflects the drill bit fragments rock hardly or easily. At present, rock drillability classification indexes have rock single axle compressive strength, point load intensity, fracture stress during chiseling, drill speed, chiseling specific work, acoustic parameter, cutting magnitude and so on. Every index reflects rock drillability but isnt overall. It is feasible that using many indexes of fuzzy mathematics method etc. to evaluate rock drillability.Rock drillability reflects the drill bit fragments rock hardly or easily. At present, rock drillability classification indexes have rock single axle compressive strength, point load intensity, fracture stress during chiseling, drill speed, chiseling specific work, acoustic parameter, cutting magnitude and so on. Every index reflects rock drillability but isnt overall. It is feasible that using many indexes of fuzzy mathematics method etc. to evaluate rock drillability.

关 键 词：DRILLABILITY ROCK CLASSIFICATION research present situation INDEX 

分 类 号：TD313[矿业工程—矿井建设]