Effectiveness of the use of high impact energies for breaking hard ledge rocks
- 20 Downloads
The higher the impact energy, the lower is the value of the stresses which must be induced in a rock mass being broken.
The use of high impact energies creates more favorable stresses for the percussion tool.
In the case of high-energy impact, with increasing hardness of the rock the rate of rock breaking will either decrease very slightly (in contrast with fracture by a cutting tool or roller bit) or even increase.
KeywordsRock Mass Impact Energy Tool Life Rock Breaking High Impact Energy
Unable to display preview. Download preview PDF.
- 1.L. I. Baron, L. B. Glatman, and E. K. Gubenkov, Rock Breaking by Entry-Driving Machines [in Russian], Nauka, Moscow (1968).Google Scholar
- 2.Proceedings of the Conference on Fracture of Coals and Rocks [in Russian], Izd-vo Vysshaya Shkola, Moscow (1963).Google Scholar
- 3.V. S. Sevast'yanov, Tool Life and the Fundamental Characteristics of Percussive Cleavage of Rocks [in Russian], Ugletekhizdat, Moscow (1959).Google Scholar
- 4.A. F. Ioffe et al., ZhRFKhO (1924).Google Scholar
- 5.Griffith, Proceedings of the First Intern. Congress for Applied Mechanics, Delft (1925).Google Scholar
- 7.V. D. Kuznetsov, Physics of a Solid Body [in Russian], Vol. 2, Izd. TGU, Tomsk (1941).Google Scholar
- 8.F. F. Voitsekhovskaya and L. A. Mitin, “Wear resistance of a percussive tool and the effect of percussion parameters on the strength indices of rocks,” in: Problems of Hydropulse Engineering [in Russian], Nauka, Novosibirsk (1970).Google Scholar