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V. E. Brovin
V. E. Brovin
G.V. Plekhanov Saint Petersburg Mining Institute
G.V. Plekhanov Saint Petersburg Mining Institute

Co-authors

Articles

Blasting, explosives and means of mechanization of their application
  • Date submitted
    2008-07-04
  • Date accepted
    2008-09-18
  • Date published
    2009-01-01

Formation of longitudinal and volumetric waves in the vicinity of a cavity during explosive explosion in rocks

Article preview

Formation of longitudinal and volumetric waves in a vicinity of a cavity of the explosive chamber is investigated. By the received results the conclusion is made, that for an estimation of parameters of waves of pressure on walls of an explosive cavity the shock adiabatic curve of an elastic harbinger, because of affinity of adiabatic curves of an elastic harbinger and a wave of volumetric compression can be used.

How to cite: Menzhulin M.G., Brovin V.E. Formation of longitudinal and volumetric waves in the vicinity of a cavity during explosive explosion in rocks // Journal of Mining Institute. 2009. Vol. 180. p. 164-167.
Physics and fracture mechanics rocks
  • Date submitted
    2006-09-28
  • Date accepted
    2006-11-19
  • Date published
    2007-03-01

Energy efficiency of rock destruction during explosion of explosives with different detonation characteristics

Article preview

The efficiency of rock destruction by explosion of explosives also depends on the dissipation energy. When using explosives with different detonation characteristics, the dissipation energy changes significantly in the crushing zone, which in turn affects the overall destruction efficiency.

How to cite: Menzhulin M.G., Brovin V.E. Energy efficiency of rock destruction during explosion of explosives with different detonation characteristics // Journal of Mining Institute. 2007. Vol. 171. p. 121-125.
Mining. Ecology
  • Date submitted
    2005-07-13
  • Date accepted
    2005-08-01
  • Date published
    2006-02-01

Calculation of dissipation energies and parameters of stress waves at explosion of cylindrical explosive charges in a rock

Article preview

A significant part of energy (up to 70%) in explosive destruction is irreversibly spent on heating of rock particles in the near zone and represents dissipative losses. The consequence of intensive dissipative processes is an increase in temperature and the development of induced microcracking in the medium deformed by the explosion. A significant fraction of energy remains in the explosion cavity in the form of internal energy of detonation products and can also be attributed to dissipative losses. Thus, only a part of the explosion energy is spent on the formation of mechanical disturbances. Therefore, when solving problems about the formation and propagation of stress waves, it is necessary to keep in mind the effects of energy dissipation.

How to cite: Brovin V.E., Menzhulin M.G. Calculation of dissipation energies and parameters of stress waves at explosion of cylindrical explosive charges in a rock // Journal of Mining Institute. 2006. Vol. № 2 167. p. 83-85.