摘要：Explosive destruction of the rock formation is substantiated by
several theories developed by well-known scientists. The improvement of
quality of preparation of rock mass to excavation, by an excavator without
an increase in the value of specific consumption of explosives is important
in the present time. Traditionally, to increase the impact time of detonation
products on the rock hard tamping was used. The problem is in the rational
redistribution of the explosion energy due to the use of a borehole charge,
and in particular, in the tamping of low-density, porous materials. The more
intensive attenuation of the mass velocity of particles in the material of such
tamping in comparison with the mass velocity of the rock mass particles
contributes to the well channel compression and increases the impact time of
detonation products on the rock mass. As a result of redistribution of energy
of detonation products, the specific impulse of explosion increases. The
value of the radius of the controlled crushing zone increases by more than
1.6 times. The results of industrial explosions in coal mines have confirmed
the theoretical reasoning.
其他摘要：Explosive destruction of the rock formation is substantiated by several theories developed by well-known scientists. The improvement of quality of preparation of rock mass to excavation, by an excavator without an increase in the value of specific consumption of explosives is important in the present time. Traditionally, to increase the impact time of detonation products on the rock hard tamping was used. The problem is in the rational redistribution of the explosion energy due to the use of a borehole charge, and in particular, in the tamping of low-density, porous materials. The more intensive attenuation of the mass velocity of particles in the material of such tamping in comparison with the mass velocity of the rock mass particles contributes to the well channel compression and increases the impact time of detonation products on the rock mass. As a result of redistribution of energy of detonation products, the specific impulse of explosion increases. The value of the radius of the controlled crushing zone increases by more than 1.6 times. The results of industrial explosions in coal mines have confirmed the theoretical reasoning.
