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Journal of Applied Mechanics and Technical Physics

2017 year, number 5

Development of a System of Plane Radial Cracks in Explosion of Linear Blasthole and Borehole and Burning Charges

E. N. Sher
Chinakala Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: взрыв, скважинные заряды, шпуровые заряды, радиальные трещины, форма трещин, трехмерное моделирование, explosion, borehole charges, blasthole charges, radial crack, crack shape, three-dimensional modeling


Numerical schemes for determining the shape and dimensions of radial cracks formed during confined explosions of linear charges located in a monolithic rock massif at a great depth and near its surface. The influence of the charge length on the dimensions of radial cracks in a confined explosion is studied. The amount of undercharging of a borehole or blast charge for which the area radial cracks is maximal is determined.