Development of a system of plane radial cracks in explosion of linear blasthole and borehole and burning charges

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.