Study of Conditions for Generation of Superfine Particles at Explosive Rock Destruction
The paper describes results of experimental study of structural changes in rock specimens in the explosion vicinity. Changes in specimen petrography and mineral composition, microcrack generation are analyzed. As demonstrated by x-ray structural analysis of the specimens before and after air-blast dynamical impact of about 10GPa, the dynamic impact resulted in increase in mineral grain dispersion and sharp decrease in rock porosity. Degree of rock crushing depends upon blast wave amplitude. The authors considered various mechanisms of generation of superfine particles, material crushing in the vicinity of the charge, rock fragmentation and generation of new surfaces as a result of explosive impact. A fractal model is developed for rock disintegration that describes distribution of the number of superfine particles by power law.
rock fragmentation superfine particles fractal model
S. D. Victorov A.N.Kachanov V. N.Odintsev
Institute of Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, (IPKON RAS) Moscow, Russia
国际会议
The Asian-Pacific Symposium on Blasting Techniques(亚洲太平洋地区爆破技术研讨会)
昆明
英文
124-126
2007-05-08（万方平台首次上网日期，不代表论文的发表时间）