Zhang, ZX., Ouchterlony, F. Energy Requirement for Rock Breakage in Laboratory Experiments and Engineering Operations: A Review. Rock Mech Rock Eng 55, 629–667 (2022). https://doi.org/10.1007/s00603-021-02687-6
Energy requirement for rock breakage in laboratory experiments and engineering operations : a review
|Author:||Zhang, Zong-Xian1; Ouchterlony, Finn2|
1Oulu Mining School, University of Oulu, Oulu, Finland
2Department of Mining Engineering, Montanuniversitaet Leoben, Leoben, Austria
|Online Access:||PDF Full Text (PDF, 4.2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2022030722213
|Publish Date:|| 2022-03-07
Based on the review of a wide range of literature, this paper finds that: (1) the average specific surface energy of various single crystals is only 0.8 J/m². (2) The average specific fracture energy of the rocks with a pre-crack under static cleavage tests is 4.6 J/m². (3) The average specific fracture energy of the rocks with a pre-cut notch but with no pre-crack under static tensile fracture (mode I) tests is 4.6 J/m². (4) The average specific fracture energies of regular rock specimens with neither pre-made crack nor pre-cut notch are 26.6, 13.9 and 25.7 J/m² under uniaxial compression, tension and shear tests, respectively. (5) The average specific fracture energy of irregular single quartz particles under uniaxial compression is 13.8 J/m². (6) The average specific fracture energy of particle beds under drop weight tests is 74.0 J/m². (7) The average specific fracture energy of multi-particles in milling tests is 72.5 J/m². (8) The average specific energy of rocks in percussive drilling is 399 J/m³, that in full-scale cutting is 131 J/m³, and that in rotary drilling is 157 J/m³. (9) The average energy efficiency of milling is only 1.10%. (10) The accurate measurements of specific fracture energy in blasting are too few to draw reliable conclusions. In the last part of the paper, the effects of inter-granular displacement, loading rate, confining pressure, surface area measurement, premade crack, attrition and thermal energy on the specific fracture energy of rock are discussed.
Rock mechanics and rock engineering
|Pages:||629 - 667|
|Type of Publication:||
A2 Review article in a scientific journal
|Field of Science:||
218 Environmental engineering
The first author is grateful to K. H. Renlund Foundation in Finland for the support to this study.
© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.