Energy Requirement for Rock Breakage in Laboratory Experiments and Engineering Operations: A Review

Abstract Based on the review of a wide range literature, this paper finds that: (1) average specific surface energy various single crystals is only 0.8 J/m 2 . (2) The fracture rocks with pre-crack under static cleavage tests 4.6 (3) pre-cut notch but no tensile (mode I) (4) energies regular rock specimens neither pre-made crack nor are 26.6, 13.9 and 25.7 uniaxial compression, tension shear tests, respectively. (5) irregular quartz particles compression 13.8 (6) particle beds drop weight 74.0 (7) multi-particles in milling 72.5 (8) percussive drilling 399 3 , that full-scale cutting 131 rotary 157 (9) efficiency 1.10%. (10) accurate measurements blasting too few to draw reliable conclusions. In last part paper, effects inter-granular displacement, loading rate, confining pressure, area measurement, premade crack, attrition thermal discussed.